DNS lookups and printing

I have a workstation, call it Panther, networked to a Mandrake file/print server, to which a laser printer is attached. Defined a printer on Panther, pointing to IPP on server, and everything worked. At some point in long-forgotten time, I stuck an entry for server in Panther's /etc/hosts - not sure if this was for printing, file services or just ssh. Last week, printing ceased to function - Panther's print queue gives a Samba-like error message, something to the effect of "NT Authorization Failure," or some such.
Now, Panther's /etc/resolv.conf has "search Bigdomain.com" as a directive, as well as the (RFC1918) ip address of server for nameserver.
Dragged out tcpdump and found that Panther was querying the ip address of server for "server.Bigdomain.com" and striking out - server doesn't know, really, that it's on that network. I.e., 'dig server.Bigdomain.com' returns NXDOMAIN. Now, 'ping server' does work - evidently ping is smart enough to check /etc/hosts, but printing - since last week! - isn't. Now, server does know that it's server.Littledomain.com, and 'dig server.Littledomain.com' does return the right IP.
So, I changed (on Panther) the search directive to Littledomain.com, and - voila! - printing resumed. Yay.
Until the next morning, when printing stopped again. Sure enough, resolv.conf had changed back. Huh? Then I noticed that when editing it with 'sudo vi /etc/resolv.conf', I was really editing /private/etc/resolv.conf. Hmmmmph. I'm assuming that there's a 'real' /etc/resolv.conf out there that Panther won't let me edit, and it keeps overwriting my edits - why? with the real copy. What's up with that?
So, two questions:
1) Why doesn't print check /etc/hosts for the print server lookup, as it apparently used to?
2) Why can't I make a permanent change in /etc/resolv.conf?
iBook 14" Mac OS X (10.3.9)
iBook 14" Mac OS X (10.3.9)
iBook 14" Mac OS X (10.3.9)
iBook 14" Mac OS X (10.3.9)
iBook 14"

So, two questions:
1) Why doesn't print check /etc/hosts for the print
server lookup, as it apparently used to?
2) Why can't I make a permanent change in
/etc/resolv.conf?
I figured out question 2). Resolv.conf keeps changing back b/c it's set in System Preferences under TCP/IP properties for my connection. D'uh.
I still need help with question 1), though.

Similar Messages

2008 R2 PDC with DNS, File and Print Server Roles

Hi all,
we have a brand new Canon iRA7260 setup on 2008 R2 print server, which is also our DC, DNS, DHCP and File Server with latest PCL5c drivers downloaded from Canon's website as recommended at that time by the canon technician who assembled the
machine. All our laptops and desktops are running Windows 7 64-bit and after creating a GPO everyone got connected to the printer no problem, the printer has a static IP, same subnet as the print server and PDC, printer's port has been setup to RAW
and to spool documents, driver isolation setup to default.
All users are setup for secure print, so every print job they send to the printer stays on the printer until they walk up to the machine and release it by punching in a department's pin. Everything works great except for every morning a get a few complaints
that the jobs sent to the printer did not appear in the secure print folder. There is no errors of any kind on workstations and all I see in the print job logs on the print server is that document been spooled, printed and deleted. The strange thing is that
the size of the document that disappears is always shown as 0 bytes in size and 1 page long. And the whole process of spooling printing and deleting happens within 1 second according to logs. There is no errors or warnings in the log except for informational
events.
I just discovered that what actually fixes this issue for me is not even restarting the print spooler on the print server, but just login into the print server from my workstation via RDP with admin credentials. Once I login into the server remotely,
every print job sent to the printer afterwards from every workstation in our office appears as usual in users secure print mailboxes. Users don't even have to reboot their work stations, everything just starts working as usual. There is no overnight activities
on that server as all our staff leaves the offices by 8 p.m. the latest and the only thing that is running overnight is the Symantec's Backup Executive backup jobs. Is it possible that a back up job could somehow affect the print server/print driver settings
or put it into a "sleep" mode so it would require a domain admin login to the server to bring it back into operational state?

Hi, the print server had default permissions set after the role was installed. I just added domain users and authenticated users with print and view server rights. I don't think this is a problem though because Samsungs Brothers and Xerox printers
are working. It looks like some process that runs at night on the print server disallows users to print to the Canon printer when they come in in the morning. Login remotely with admin credentials into the 2008 R2 that has print server role installed and this
canon printer deployed via GPO fixes this immediately for all users. After the printer works fine until the last staff leaves the office. However when I come in in the morning everyone reports to me the same problem which again I'm able to fix by login with
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Thanks

Slow DNS Lookups after connecting via PPP VPN

I have this very annoying problem and just can't seem to find a method to resolve it.
When I connect to my work network via a PPP VPN connection, all internet connectivity thereafter takes forever to do a DNS lookup. So when I browse the internet it takes ages before the page is displayed back.
If I also do a ping in finder for a random URL, www.google.com for example, it sits there for nearly a minute before I get a response. If I then immediately perform the ping again, I get a response straight away. So it seems once it's resolved the domain name, it gets stored in a cache somewhere. If I try another domain name, I get the same delay and then it eventually gets through.
As soon as I close the VPN connection, service is resumed and DNS lookups work fast.
I've also made sure I've unchecked the option to "Send all traffic over VPN connection".
I've also set my 'Service Order' to have my wireless Airport connection in the No #1 position.
The other thing I've tried is deleting the default route (via Terminal) and adding one manually that points to my wireless router, again without success.
Does anyone have any other ideas I could try? I've also recently re-installed a fresh copy of Leopard in case something was stuffed up, but the problem is still there after installation.
Hoping someone has an easy solution!
Many thanks

I seem to have found a work-around. There is probably a neater way of doing this but here goes.
Here is my setup:
Airport Wireless to my home router
PPP VPN connection to my office windows network
3G connection via mobile phone
My aim was to be able to connect to my office network via wireless at home or via my cellular data connection, but continue to route all non-work traffic via the main connection (wireless/3G).
The #1 problem I had once I connected to my office VPN on either wireless or 3G, was that DNS lookups to general internet sites took forever. So to get around this, I created TWO VPN connections to my office network in Network Preferences and in both connections I made sure the option to send all traffic over VPN was left UNCHECKED.
The first connection I then designated for use when connecting wirelessly at home. Here I manually added the IP address of my home router as a DNS entry.
The second connection I did the same by adding a new DNS entry, except here I used the DNS server of my cellular data connection, in this case T-Mobile UK.
When connecting to my office network I just use either of the above connections depending on whether I am connecting wirelessly at home or via my mobile phone.
It seems a bit long winded I grant you, but after literally months of trying to resolve this annoying problem, this appears to be the only fix that works.
The downfall of this would be that DNS resolution to any servers on your office network might not work, but that isn't a problem for me since I manually add any servers I use at work to my local hosts file. This negates any need for DNS lookups and actually speeds up access to my work servers.
In amongst this I did several reboots, so you give your machine a reboot once you've completed the above steps, just in case.
The 3G connection won't work for you if your provider changes the DNS server every time you connect, but this is unlikely.
If anyone's got any comments, I'd love to hear them.
Cheers
Phil

WLC 5508 and WPA/WPA2 causes client DNS lookups to fail

Hi all, we just recently received a brand new 5508 with 6.0.199.4 firmware. We currently have three LAP-1250s that associate just fine to the WLC.
For testing purposes only, we enabled WPA2 with both types of encryption TKIP and AES with an ASCII PSK.   The clients are able to connect, authenticate and get an IP address from our local (same subnet) DHCP server. They also get the DNS info from our DHCP server.   However, the problem is that they are not able to do any DNS lookups.   I haven't run wireshark yet to confirm, but it sounds very familiar to this problem: https://supportforums.cisco.com/message/3202369
I've even had clients use nslookup with both of my DNS servers and they are not able to resolve. I'm not sure if the request or the reply is being blocked/dropped, but I can find out tomorrow.
Now the strange part - if I turn off WLAN security altogether, it works!   That's right, I just disable L2 security for the WLAN and re-connect the clients and they are able to do full DNS lookups.
AND - if I leave L2 security configured (WPA2 with PSK), and enable L3 Passthrough security - the clients get to the auth web page, click the "accept" button and are then able to do full DNS lookups too.
What could be the problem here?   There's nothing I see configured for the L2 or L3 security settings that could be the culprit. We're using default (from Cisco) configuration, so there's no ACLs configured or anything like that to block DNS.
Another strange thing here which may or not be related - during initial configuration the setup asked for a virtual IP - so I gave it one - 1.1.2.2.   Now when I do an ipconfig /all on the client, I see this 1.1.2.2 address listed as the DHCP server. Why is this?   It's definitely getting an IP address and DNS info from the correct DHCP server, so not sure why this is showing up.
Thanks, Matt

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Hi Matt,
Just wanted to jump in, and also mention it may be worth attempting to disable the fastpath feature on the 5508, and test your failing client again. You may be hitting CSCti34667.
debug fastpath cfgtool --fc.disable
This command can be run via Telnet/SSH. Please keep in mind that fastpath will automatically re-enable periodically, so we recommend disabling every 10 minutes as a workaround for any known fastpath issues. You can do so by running the following Macro in TeraTerm:
:mainloop
   sendln "debug fastpath cfgtool --fc.disable"
   pause 600
goto mainloop
If you find that disabling fastpath resolves your concern, you can reach out to TAC for an Escalation Image with the fix for this one.
Best,
Drew

Different DNS lookup stratergi for recognized and not recognized root domain

Firefox DNS lookup stratergy is different if the root domain in the URL is recognized (like .se) or not recognized (like .local). How can I add my selfintroduced root domain in the list of recognized root domains?

Firefox DNS lookup stratergy is different if the root domain in the URL is recognized (like .se) or not recognized (like .local). How can I add my selfintroduced root domain in the list of recognized root domains?

HELP! Disabling reverse DNS lookups on client

Is there a property that can be set to disable the reverse DNS
lookup for client requests? I read that if reverse lookups are
no working then client requests can take an extra 15-30 seconds.
In our environment reverse lookups are not something we can
count on so we would like to disable them completely. Please let
me know which property can be set it if any to accomplish this.
Regards,
Robert

Don't we all ;)
WL 5.1 sp3
Sol 2.6
J2 1.2.1_04
Rich Nill wrote in message <[email protected]>...
Paul,
What version of Weblogic are you running? I want to make sure we don'tsuffer
from the same problem.
Thanks,
Rich
Paul Iter wrote:
Would this patch have any impact on the problem I described in
"performance
degradation PROBLEM"?
Thanks,
Paul
Mark Griffith wrote:
There is another issue here though, when we print out server ID's we
call
java.net.InetAddress.toString() which ends up in a DNS call.
Contact support they have a one-off patch.
cheers
mbg
In article <[email protected]>, [email protected]
says...
Is there a property that can be set to disable the reverse DNS
lookup for client requests? I read that if reverse lookups are
no working then client requests can take an extra 15-30 seconds.
In our environment reverse lookups are not something we can
count on so we would like to disable them completely. Please let
me know which property can be set it if any to accomplish this.
Regards,
Robert
==================================================
NewsGroup Rant
==================================================
Rant 1.
The less info you provide about your problem means
the less we can help you. Try to look at the
problem from an external perspective and provide
all the data necessary to put your problem in
perspective.

DNS timeout and Name Server timeout between two DC's

Hi All
My clients have a brand new domain built for them, with two domain controllers at separate sites, and one site is having some issues.
At one site (where DC2 is hosted), all users are having 5-10 minute log on delays - once in everything is running without issues. Site where DC1 is has zero issues - they run smoothly, get a nice quick login etc. All users are using redirected folders and
all have the same GPO's applying to them.
DC1 also has periodic issues communicating with DC2 - nslookup using DC2 gives "DNS request timed out. timeout was 2 seconds" on external AND internal queries, but then 5 minutes later will resolve perfectly. During the "DNS time out"
period, trying to resolve DC2 as a Name Server also gives the error "A timeout occurred during validation".
Not sure if these (slow logon and DNS/NameServer time out issues) issues are related but I am at a loss.
Reverse lookup zones are fully created and populated, entries aren't randomly deleting themselves. Replication between both DC's is working fine, no errors and SYSVOL/NETLOGON are sharing fine from both DC's. Occassionally restarting the DNS server services
on both servers will kick them back into talking - but only for around 30sec-1minute, after that they communicate periodically without problems and spend the rest of the time not resolving.
Any ideas floating around, as I am at a loss here. We haven't been able to join more than a few test users to DC2's site for fear of them all calling every day due to long log on periods.

Hi,
Are you pointing each DC/DNS to the other one as primary dns in tcp/ip properties? Can you post a dcdiag /a /f:dcdiag.log from the DC2?
Any warnings/errors in Application log on the client(s) facing issues after they get logged in ? Can you also confirm that users from site with DC2 are having DC at : set | find /I "LOGONSERVER" output?
Hope it helps.
Regards,
Calin
Hi Calin
The DC's were originally pointing at each other for the primary but others prior to posting here suggested that was not best practice anymore and said they should be the other way around - in any case, either direction doesn't resolve the issues.
The only application error the users are getting is :
The winlogon notification subscriber <SessionEnv> was unavailable to handle a notification event.
The winlogon notification subscriber <GPClient> took 84 second(s) to handle the notification event (Logon)
DCDIAG of DC2 :
Directory Server Diagnosis
Performing initial setup:
Trying to find home server...
Home Server = CAB1-DC-V01
* Identified AD Forest.
Done gathering initial info.
Doing initial required tests
Testing server: AUS\NDC1-DC-V01
Starting test: Connectivity
......................... NDC1-DC-V01 passed test Connectivity
Testing server: AUS\CAB1-DC-V01
Starting test: Connectivity
......................... CAB1-DC-V01 passed test Connectivity
Doing primary tests
Testing server: AUS\NDC1-DC-V01
Starting test: Advertising
......................... NDC1-DC-V01 passed test Advertising
Starting test: FrsEvent
......................... NDC1-DC-V01 passed test FrsEvent
Starting test: DFSREvent
......................... NDC1-DC-V01 passed test DFSREvent
Starting test: SysVolCheck
......................... NDC1-DC-V01 passed test SysVolCheck
Starting test: KccEvent
......................... NDC1-DC-V01 passed test KccEvent
Starting test: KnowsOfRoleHolders
......................... NDC1-DC-V01 passed test KnowsOfRoleHolders
Starting test: MachineAccount
......................... NDC1-DC-V01 passed test MachineAccount
Starting test: NCSecDesc
......................... NDC1-DC-V01 passed test NCSecDesc
Starting test: NetLogons
......................... NDC1-DC-V01 passed test NetLogons
Starting test: ObjectsReplicated
......................... NDC1-DC-V01 passed test ObjectsReplicated
Starting test: Replications
......................... NDC1-DC-V01 passed test Replications
Starting test: RidManager
......................... NDC1-DC-V01 passed test RidManager
Starting test: Services
......................... NDC1-DC-V01 passed test Services
Starting test: SystemLog
A warning event occurred. EventID: 0x80000109
Time Generated: 12/17/2014 08:25:05
Event String:
A pointer device did not report a valid unit of angular measurement.
A warning event occurred. EventID: 0x80000101
Time Generated: 12/17/2014 08:25:05
Event String:
A pointer device reported a bad angular physical range.
A warning event occurred. EventID: 0x80000102
Time Generated: 12/17/2014 08:25:05
Event String:
A pointer device reported a bad angular logical range.
A warning event occurred. EventID: 0x80000109
Time Generated: 12/17/2014 08:25:06
Event String:
A pointer device did not report a valid unit of angular measurement.
A warning event occurred. EventID: 0x80000101
Time Generated: 12/17/2014 08:25:06
Event String:
A pointer device reported a bad angular physical range.
A warning event occurred. EventID: 0x80000102
Time Generated: 12/17/2014 08:25:06
Event String:
A pointer device reported a bad angular logical range.
A warning event occurred. EventID: 0x80000109
Time Generated: 12/17/2014 08:47:55
Event String:
A pointer device did not report a valid unit of angular measurement.
A warning event occurred. EventID: 0x80000101
Time Generated: 12/17/2014 08:47:55
Event String:
A pointer device reported a bad angular physical range.
A warning event occurred. EventID: 0x80000102
Time Generated: 12/17/2014 08:47:55
Event String:
A pointer device reported a bad angular logical range.
A warning event occurred. EventID: 0x80000109
Time Generated: 12/17/2014 08:47:55
Event String:
A pointer device did not report a valid unit of angular measurement.
A warning event occurred. EventID: 0x80000101
Time Generated: 12/17/2014 08:47:55
Event String:
A pointer device reported a bad angular physical range.
A warning event occurred. EventID: 0x80000102
Time Generated: 12/17/2014 08:47:55
Event String:
A pointer device reported a bad angular logical range.
A warning event occurred. EventID: 0x80000109
Time Generated: 12/17/2014 08:47:55
Event String:
A pointer device did not report a valid unit of angular measurement.
A warning event occurred. EventID: 0x80000101
Time Generated: 12/17/2014 08:47:55
Event String:
A pointer device reported a bad angular physical range.
A warning event occurred. EventID: 0x80000102
Time Generated: 12/17/2014 08:47:55
Event String:
A pointer device reported a bad angular logical range.
......................... NDC1-DC-V01 failed test SystemLog
Starting test: VerifyReferences
......................... NDC1-DC-V01 passed test VerifyReferences
Testing server: AUS\CAB1-DC-V01
Starting test: Advertising
......................... CAB1-DC-V01 passed test Advertising
Starting test: FrsEvent
......................... CAB1-DC-V01 passed test FrsEvent
Starting test: DFSREvent
There are warning or error events within the last 24 hours after the
SYSVOL has been shared. Failing SYSVOL replication problems may cause
Group Policy problems.
......................... CAB1-DC-V01 passed test DFSREvent
Starting test: SysVolCheck
......................... CAB1-DC-V01 passed test SysVolCheck
Starting test: KccEvent
......................... CAB1-DC-V01 passed test KccEvent
Starting test: KnowsOfRoleHolders
......................... CAB1-DC-V01 passed test KnowsOfRoleHolders
Starting test: MachineAccount
......................... CAB1-DC-V01 passed test MachineAccount
Starting test: NCSecDesc
......................... CAB1-DC-V01 passed test NCSecDesc
Starting test: NetLogons
......................... CAB1-DC-V01 passed test NetLogons
Starting test: ObjectsReplicated
......................... CAB1-DC-V01 passed test ObjectsReplicated
Starting test: Replications
......................... CAB1-DC-V01 passed test Replications
Starting test: RidManager
......................... CAB1-DC-V01 passed test RidManager
Starting test: Services
......................... CAB1-DC-V01 passed test Services
Starting test: SystemLog
An error event occurred. EventID: 0x0000272C
Time Generated: 12/17/2014 08:30:22
Event String:
DCOM was unable to communicate with the computer 139.130.4.4 using any of the configured protocols; requested by PID 1810 (C:\Windows\system32\dcdiag.exe).
An error event occurred. EventID: 0x0000272C
Time Generated: 12/17/2014 08:30:43
Event String:
DCOM was unable to communicate with the computer 203.50.2.71 using any of the configured protocols; requested by PID 1810 (C:\Windows\system32\dcdiag.exe).
An error event occurred. EventID: 0x0000272C
Time Generated: 12/17/2014 08:31:05
Event String:
DCOM was unable to communicate with the computer 8.8.4.4 using any of the configured protocols; requested by PID 1810 (C:\Windows\system32\dcdiag.exe).
An error event occurred. EventID: 0x0000272C
Time Generated: 12/17/2014 08:31:27
Event String:
DCOM was unable to communicate with the computer 8.8.8.8 using any of the configured protocols; requested by PID 1810 (C:\Windows\system32\dcdiag.exe).
......................... CAB1-DC-V01 failed test SystemLog
Starting test: VerifyReferences
......................... CAB1-DC-V01 passed test VerifyReferences
Running partition tests on : DomainDnsZones
Starting test: CheckSDRefDom
......................... DomainDnsZones passed test CheckSDRefDom
Starting test: CrossRefValidation
......................... DomainDnsZones passed test
CrossRefValidation
Running partition tests on : aus
Starting test: CheckSDRefDom
......................... aus passed test CheckSDRefDom
Starting test: CrossRefValidation
......................... aus passed test CrossRefValidation
Running partition tests on : ForestDnsZones
Starting test: CheckSDRefDom
......................... ForestDnsZones passed test CheckSDRefDom
Starting test: CrossRefValidation
......................... ForestDnsZones passed test
CrossRefValidation
Running partition tests on : Schema
Starting test: CheckSDRefDom
......................... Schema passed test CheckSDRefDom
Starting test: CrossRefValidation
......................... Schema passed test CrossRefValidation
Running partition tests on : Configuration
Starting test: CheckSDRefDom
......................... Configuration passed test CheckSDRefDom
Starting test: CrossRefValidation
......................... Configuration passed test CrossRefValidation
Running enterprise tests on : swms.com
Starting test: LocatorCheck
......................... swms.com passed test LocatorCheck
Starting test: Intersite
Doing intersite inbound replication test on site AUS:
......................... swms.com passed test Intersite
SYSVOL is sharing OK, these errors are occurring when DC1 is performing backups and comes good a few seconds later)
The DNS failures are not on the NIC of each server they are the forwarders for the server, not sure why they are failing as DNS lookup is running fine and the IP's are resolving correctly within the forwarders.
set | find /I "LOGONSERVER"
C:\Users\Christopher.McCartne>set | find /I "LOGONSERVER"
LOGONSERVER=\\NDC1-DC-V01
NDC1 = DC1
CAB1 = DC2
The users are logging onto NDC1 currently as I did switch around their DNS servers to have DC1 as their primary to test if this resolved the logon times. It didn't so I've switched them back and will re-run the check to see which server is the logonserver.

9i app 9.0.2.01?Does the reverse DNS lookup have to be set up for a FQDN

HEy guys:
I'M ALWAYS GETTING STUCK IN THE SAME PLACE WHEN I AM TRYING TO INSTALL 9I APPSERVER 9.0.2.0.1 REL 2. ITS ALWATYS HAPPENING AT THE oRACLE db CONFIG assistant i have set up my host file and when i ping -a servername i get the full reply back ex. servername.domain.com but now when i ping -a 111.111.111.111 i do not get the host name back this is b/c i do not have the PTR record set up. Do i have to have a reverse dnslookup working for what oracle is stating is "FQDN" and not just the dns lookup working...how is oracle installer looking at this piece.
that is the only i see that i don't have when i look at my computer name (by the way this is a winnt environment)in properties it has the FQDN. i also have set up the host file correctly resembling 111.111.111.111 servername.domainname.com servername oracleinstall. What else am i missing here guys? thanks for the help in advance
regards,
robert

Actually, these issues were/are documented - see the addendum. Also, the install guide details which files need to be updated with the FQDN/IP.
Though it does not have to be setup in your DNS server (say if you are just doing it on a single tier to test), those machines which are looking to connect to it would need to have the proper additions to the hosts file as well.
As for why the 'non-default' http ports, this was a result of Unix security. Non-root users cannot start processes using ports below a specific range. As a result, oracle defaults them to a higher number allowing your oracle account whom lacks root access to start the http service.
As for non-oracle responses, this isn't really an official forumn. I believe those oracle peeps who do respond here are doing so on their own. If you need official/immediate responses, then i would recommend using metalink for an itar or the metalink forums.
Now on to Robert's second question. See metalink Note:209114.1: How to Change the Port used for Oracle 9iAS Portal 9.0.x. If you don't have access to metalink, let me know and I can forward the note or post it here.
Have fun!

[SOLVED] Slow DNS lookup, I think

Hi
I have a really annoying problem. My DNS lookup in Arch is painfully slow. I know it's not a network problem, as I don't have any problems in my Ubuntu installation. I have tried to run two simple tests to show you what I mean. The first is a simple ping google.
########### Ubuntu ###########
carsten@carsten-laptop:~$ time ping -c 3 www.google.com
PING www.l.google.com (216.239.61.104) 56(84) bytes of data.
64 bytes from sn-in-f104.google.com (216.239.61.104): icmp_seq=1 ttl=245 time=17.4 ms
64 bytes from sn-in-f104.google.com (216.239.61.104): icmp_seq=2 ttl=245 time=20.6 ms
64 bytes from sn-in-f104.google.com (216.239.61.104): icmp_seq=3 ttl=245 time=11.4 ms
--- www.l.google.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2002ms
rtt min/avg/max/mdev = 11.465/16.529/20.641/3.809 ms
real 0m2.290s
user 0m0.000s
sys 0m0.004s
########### Arch ###########
carsten ~/Desktop $ time ping -c 3 www.google.com
PING www.l.google.com (216.239.61.104) 56(84) bytes of data.
64 bytes from sn-in-f104.google.com (216.239.61.104): icmp_seq=1 ttl=245 time=12.3 ms
64 bytes from sn-in-f104.google.com (216.239.61.104): icmp_seq=2 ttl=245 time=10.7 ms
64 bytes from sn-in-f104.google.com (216.239.61.104): icmp_seq=3 ttl=245 time=12.4 ms
--- www.l.google.com ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2007ms
rtt min/avg/max/mdev = 10.776/11.867/12.476/0.778 ms
real 0m15.305s
user 0m0.013s
sys 0m0.007s
Ubuntu: 0m2.290s vs. Arch: 0m15.305s.
In the second test I tried to fake a pacman update by downloading the .db files from my primary server. On both Ubuntu and Arch I used this simple script
repos=( core extra community )
time for repo in ${repos[@]}
do
wget http://archlinux.unixheads.org/$repo/os/i686/$repo.db.tar.gz
done
When I run it in, I get this result
########### Ubuntu ###########
carsten@carsten-laptop:~/Desktop$ ./updatetest
--2008-11-10 07:58:23-- http://archlinux.unixheads.org/core/os/i686/core.db.tar.gz
Resolving archlinux.unixheads.org... 204.152.186.174
Connecting to archlinux.unixheads.org|204.152.186.174|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 32515 (32K) [application/x-gzip]
Saving to: `core.db.tar.gz'
100%[=============================================================>] 32.515 --.-K/s in 0,1s
2008-11-10 07:58:23 (331 KB/s) - `core.db.tar.gz' saved [32515/32515]
--2008-11-10 07:58:23-- http://archlinux.unixheads.org/extra/os/i686/extra.db.tar.gz
Resolving archlinux.unixheads.org... 204.152.186.174
Connecting to archlinux.unixheads.org|204.152.186.174|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 422622 (413K) [application/x-gzip]
Saving to: `extra.db.tar.gz'
100%[=============================================================>] 422.622 242K/s in 1,7s
2008-11-10 07:58:25 (242 KB/s) - `extra.db.tar.gz' saved [422622/422622]
--2008-11-10 07:58:25-- http://archlinux.unixheads.org/community/os/i686/community.db.tar.gz
Resolving archlinux.unixheads.org... 204.152.186.174
Connecting to archlinux.unixheads.org|204.152.186.174|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 369845 (361K) [application/x-gzip]
Saving to: `community.db.tar.gz'
100%[=============================================================>] 369.845 206K/s in 1,8s
2008-11-10 07:58:27 (206 KB/s) - `community.db.tar.gz' saved [369845/369845]
real 0m3.837s
user 0m0.016s
sys 0m0.036s
########### Arch ###########
carsten ~/Desktop $ ./updatetest
--2008-11-10 08:01:33-- http://archlinux.unixheads.org/core/os/i686/core.db.tar.gz
Resolving archlinux.unixheads.org... 204.152.186.174
Connecting to archlinux.unixheads.org|204.152.186.174|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 32515 (32K) [application/x-gzip]
Saving to: `core.db.tar.gz'
100%[==============================================================================>] 32,515 --.-K/s in 0.1s
2008-11-10 08:01:47 (303 KB/s) - `core.db.tar.gz' saved [32515/32515]
--2008-11-10 08:01:47-- http://archlinux.unixheads.org/extra/os/i686/extra.db.tar.gz
Resolving archlinux.unixheads.org... 204.152.186.174
Connecting to archlinux.unixheads.org|204.152.186.174|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 422622 (413K) [application/x-gzip]
Saving to: `extra.db.tar.gz'
100%[==============================================================================>] 422,622 253K/s in 1.6s
2008-11-10 08:02:02 (253 KB/s) - `extra.db.tar.gz' saved [422622/422622]
--2008-11-10 08:02:02-- http://archlinux.unixheads.org/community/os/i686/community.db.tar.gz
Resolving archlinux.unixheads.org... 204.152.186.174
Connecting to archlinux.unixheads.org|204.152.186.174|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 369845 (361K) [application/x-gzip]
Saving to: `community.db.tar.gz'
100%[==============================================================================>] 369,845 262K/s in 1.4s
2008-11-10 08:02:17 (262 KB/s) - `community.db.tar.gz' saved [369845/369845]
real 0m44.153s
user 0m0.047s
sys 0m0.017s
Ubuntu: 0m3.837s vs. Arch: 0m44.153s
I get the same update time whenever I update pacman normally.
I have googled a lot to figure out an answer, but nothing helps, so I was hoping somebody could help me figure this out, as it's very annoying. My hosts file looks like this
hosts:
# /etc/hosts: static lookup table for host names
#<ip-address> <hostname.domain.org> <hostname>
127.0.0.1 localhost.localdomain localhost arch
# End of file
rc.conf:
# /etc/rc.conf - Main Configuration for Arch Linux
# LOCALIZATION
# LOCALE: available languages can be listed with the 'locale -a' command
# HARDWARECLOCK: set to "UTC" or "localtime"
# USEDIRECTISA: use direct I/O requests instead of /dev/rtc for hwclock
# TIMEZONE: timezones are found in /usr/share/zoneinfo
# KEYMAP: keymaps are found in /usr/share/kbd/keymaps
# CONSOLEFONT: found in /usr/share/kbd/consolefonts (only needed for non-US)
# CONSOLEMAP: found in /usr/share/kbd/consoletrans
# USECOLOR: use ANSI color sequences in startup messages
LOCALE="en_US.utf8"
HARDWARECLOCK="UTC"
USEDIRECTISA="no"
TIMEZONE="Asia/Singapore"
KEYMAP="dk"
CONSOLEFONT=
CONSOLEMAP=
USECOLOR="yes"
# HARDWARE
# MOD_AUTOLOAD: Allow autoloading of modules at boot and when needed
# MOD_BLACKLIST: Prevent udev from loading these modules
# MODULES: Modules to load at boot-up. Prefix with a ! to blacklist.
# NOTE: Use of 'MOD_BLACKLIST' is deprecated. Please use ! in the MODULES array.
MOD_AUTOLOAD="yes"
#MOD_BLACKLIST=() #deprecated
MODULES=(e100 mii iwl3945 fuse acpi-cpufreq cpufreq_ondemand cpufreq_conservative cpufreq_powersave loop !pcspkr !snd_pcsp)
# Scan for LVM volume groups at startup, required if you use LVM
USELVM="no"
# NETWORKING
# HOSTNAME: Hostname of machine. Should also be put in /etc/hosts
HOSTNAME="arch"
# Use 'ifconfig -a' or 'ls /sys/class/net/' to see all available interfaces.
# Interfaces to start at boot-up (in this order)
# Declare each interface then list in INTERFACES
# - prefix an entry in INTERFACES with a ! to disable it
# - no hyphens in your interface names - Bash doesn't like it
# DHCP: Set your interface to "dhcp" (eth0="dhcp")
# Wireless: See network profiles below
#eth0="eth0 192.168.0.2 netmask 255.255.255.0 broadcast 192.168.0.255"
eth0="dhcp"
INTERFACES=(!eth0 !wlan0)
# Routes to start at boot-up (in this order)
# Declare each route then list in ROUTES
# - prefix an entry in ROUTES with a ! to disable it
gateway="default gw 192.168.0.1"
ROUTES=(!gateway)
# Enable these network profiles at boot-up. These are only useful
# if you happen to need multiple network configurations (ie, laptop users)
# - set to 'menu' to present a menu during boot-up (dialog package required)
# - prefix an entry with a ! to disable it
# Network profiles are found in /etc/network.d
# This now requires the netcfg package
#NETWORKS=(main)
# DAEMONS
# Daemons to start at boot-up (in this order)
# - prefix a daemon with a ! to disable it
# - prefix a daemon with a @ to start it up in the background
DAEMONS=(syslog-ng !network hal !netfs crond fam wicd cups laptop-mode oss gdm)
SPLASH="splashy"
Thanks in advance!
Last edited by Sharpeee (2008-11-15 10:39:42)

Just tried to remove the "search..." line from my /etc/resolv.conf file, but nothing! It's okay if I remove the line after it connects right? Wicd overwrites the file anyways if I reconnect.
I don't really think changing to a different network-manager will help me. It works perfectly fine in Ubuntu with both network-manager and wicd, do don't think that's the problem. It must be a configuration file somewhere.
#### EDIT ####
I just tried to disable wicd and enable the wired network in /etc/rc.conf. After a reboot and it's still the same, even on the wired, so it's got be some other settings somewhere that's messing things up!
Also, for some reason my theme, in Gnome, isn't loaded after I disabled wicd? I have to manually run "gnome-appearance-manager"??
Last edited by Sharpeee (2008-11-11 05:01:46)

Wireless Intermittent Super Slow DNS lookup bug in 10.6.4

I don't normally post things on forums these days, as usually I can find just about any solution by searching long enough, but this issue has perplexed me to the point I actually had to come on here.
Believe me, that's a big deal, I don't give up easily.
I have spent -countless- hours searching, on here, on google, on any "solutions" or "technical" sites I could find, and the closest I can find to a solution are countless people complaining about the EXACT SAME PROBLEM that I have observed and, repeatedly, reproduced again and again, which in every single case boil down to this:
You had 10.6.x (x being 3 or less) with a wireless connection on your home network and all is well.
You upgraded to 10.6.4 and all seemed fine for maybe 24 hours or so... then it happens. You go to load a website, and it's "looking for site" or "waiting for site" in your status bar... hmm, maybe it's just this site you say, so you try another, or a few others in other tabs, but they all have the same problem.
You try to ping the sites, but the network utility can't resolve the domain to even ping them.
Your roommate, all the while, is surfing and gaming just fine on the exact same router you are on, so no, it's not the network hardware, it's not your ISP, hmm, what could it be?
All of a sudden, ALL of the sites you had in like 20 tabs load up at screaming speeds, "WOW" you say, "guess there must have just been some gunk in the wires or something" (notice the irony of the situation: no wires)... anyway, all seems fine again suddenly, surfing is fine for a few minutes, you're back to normal... and it happens again, suddenly NO site will resolve, NO dns will resolve, you can't check email or ping any domain... and so the cycle begins. Of course, you can just plug an ethernet cable straight into the router, but doesn't that kind of defeat the purpose of having wireless networking in the first place?
It continues like this, indefinitely, and it all starts roughly 24 hours after 10.6.4 has been installed.
I have read reports of people on macbooks, people on imacs, people on all sorts of different wireless hardware, but the symptoms are the same.
I know the problem is with the OS update, it's purely software. I know that it has nothing to do with hardware because simply reverting to 10.6.3 solves the problem -every single time- and then "upgrading" to 10.6.4 causes the problem to come back within 24 hours -every single time- (have been reverting using Time Machine to simplify this testing process), so no, where the problem is isn't what perplexes me; what perplexes me is that there are posts that started almost a few days after 10.6.4 came out, and so far there's STILL no fix? Are you freaking serious? Does the Apple programming team not have access to anything other than Apple-Branded Airport Extreme Base Stations to perform wireless network QA testing on?
Get a Linksys guys, grab a D-Link, go get some of the hardware people actually USE and test it on that and see what happens, it doesn't take long to see what's happening.
I blame the programmers because I am one myself and know how easy it is to screw up a rock-solid system with one little typo. Heck, which patch was it, 10.5.7 or 10.5.8 I think? Can't remember exactly, but it was supposed to be such a great "bug fix" patch... and it came with the config file for Apache set to DENY ALL INCOMING EXTERNAL CONNECTIONS by default (in a hidden file that can only be modified by the root user mind you... so much for the average user running a personal web server on THAT version), so yeah, one tiny mistake and it has huge consequences, my question is: what's taking so long to track down what's going on in 10.6.4 and fix it? Can we at least get a patch or something?
I find it really lame and really such a cop-out to see so many irrelevant "solutions" offered, "try specifying different DNS servers" (doesn't matter, whatever causes this bug doesn't care which servers you have specified, it simply sits there and does NOTHING for 2-3 minutes, and THEN when it actually DOES do a dns lookup, it gets the results in the time expected: instantly), to more extreme matters, like resetting hardware, which again has absolutely nothing to do with this bug.
Here is why anyone can see this is an obvious bug that the programming team needs to admit, investigate and correct:
A. happens immediately after the software update
B. happens to EVERYONE who uses traditional wireless routers for internet use
C. is 100% repeatedly reproducible
D. occurs on all different models of computers and all different ISP's and with all different DNS servers specified.
E. has the same symptoms on every system (lightning fast internet for 2-3 minutes, then "waiting for site" for 1-3 minutes)
F. affects EVERY network-using program on the computer (email, network utility, firefox, safari) SIMULTANEOUSLY
G. does not affect surfing to or interacting with IP addresses directly, only with trying to perform DNS lookups from ANY program with ANY dns server (or no dns server) set in network preferences.
Come on guys, just read it through, think about it for a few minutes, for anyone that has worked with and knows the underlying source code, and what changes went in between 10.6.3 and 10.6.4 specifically to networking, should have a light bulb pop up over their head and say "oh YEAH, we never uncommented that one line..." or something to that effect.

I see a very similar issue, but it's been occurring on my laptop for 4 or 5 months, which must be way before 10.6.4. My roommate and friend's laptops all work fine on my network. And my laptop works fine on anyone else's network. But MY laptop on MY network always gives the abysmal DNS performance as described in the original post: 40% of requests time out. Wireless or wired, it doesn't matter. Exact same behavior.
It also doesn't matter whether I use my Netgear router as DNS server, or my ISP, or OpenDNS, or Google. Exact same behavior.
When I do a network trace, it looks like most DNS requests my computer sends out simply never get responded to. (Could they be malformed when they hit the wire? I don't even see an error reply) A few make it through. And when there's a IPv6 (AAAA) record sent, my computer returns a "port unreachable" ICMP message. A screenshot of all of this dialogue is here:
http://img545.imageshack.us/i/screenshot20100913at114.png/
I recently had opportunity to cancel my cable service, and reinstate it for a lower price. They came out, tested the line (strong signal), gave me a new cable box. Yet the issue persists. Exact same behavior.
Firewall is disabled. I've deleted the network interfaces and added them back. Nothing helps.
(As I recall, this issue may even have been present before I reinstalled 10.6 over 10.5, so I'm not too confident a total reinstall would help.)
Any help? I'm about ready to buy a new laptop to fix this damned problem. Web browsing is nearly impossible, as is.

DNS, Certificates, and Active Directory - School Setup Issues

Our school has been piloting a small iPad depolyment. I have been struggling with getting Profile Manager to work correctly since August of last year. Here's the setup:
1. Active Directory DNS/DHCP server (set as "school.local"--yes, I know .local is bad form, but it was set before I got here). I have changed the "Digest" to "Basic" setting
2. Mac Mini server that has its own external IP and hostname ("mac.school.org") and is also bound to the AD server for user authentication for services (Profile Manager, WebDAV, wiki, etc.). I have a self-signed SSL certificate installed under the name "mac.school.org"
3. About 90 iPads, and a handfull of Mac desktops
In a perfect world, users would be able to login (with their AD credentials) to the Profile Manager self-service portal using the external hostname of the mac server ("mac.school.org/mydevices"), install the Trust Profile, and enroll the device (iPad, Mac, etc).
However, this is not the case. The setup seems to work for awhile; quite perfectly in fact. But then for reasons unknown to me, everything just "breaks" and Profile Manager ceases to work like it should. Here are some of issues I am seeing:
a.) DNS service on the Mac server turns itself ON randomly. DNS should NOT be running this server, correct? All DNS lookups internally are done by the AD server. I've used changeip and everything matches (both say "mac.school.org")
b.) Whenever we use VPN, and at other seemingly random times, the server's hostname changes from "mac.school.org" to "mac.school.local" I would make the server external only, but it needs to have an internal IP to talk to the AD server.
c.) AD binding breaks randomly and I have to rebind the server to AD
d.) When enrolling devices, Profile Manager starts rejecting certificates (not a trusted source, etc.) and I have to destroy OD and PM and start all over again.
I know this is a lot and I'm not necessarily expecting anyone to answer all of these questions. I guess I'm wondering if anyone could point me in the right direction? I've looked for help with these issues all over the place, but none of the environments I read about are quite like the one I'm in.

Yes, I am not giving the real domain name here.
No prob. just checking, sometimes people have weird domain names never know if they are real or they expect them to be real or they put domain names owned by someone else on their internal network eek.
Not really needed to use mac.school.org internally, that is in local LAN. The thing to understand about DNS is the scope for which a DNS zone is relevant WRT a client machine — inside LAN or on Internet, and which DNS server is authoritative for a domain. Authoritative in the sense of 'the final word'.
Go to Network Utility on your mac, type in your real domain name (whatever you are changing to school.org to hide it) what comes back. On my server I see the below (I have replaced my real, Internet legal domain, to 'example.com')
In my setup I have, on the LAN, setup the Mac server to be authoritative for domain 'example.com'. On the Internet however it is another external DNS server.
So you have set DNS forwarders on the Mac machine?
I really don't believe that the machine's hostname is changing, it is statically configured. What I believe is happening is that DNS name resolution is telling you different things at different times because you are using different DNS servers.
On mac machine terminal type $less /etc/resolv.conf and copy paste what it says. In server app Services | DNS right side does it say you have forwarders?
Still it is not good to have two DNS domains in your internal LAN, there is no need to have school.org on the mac DNS unless it is going to be fully setup to be authoritative in the internal LAN for the domain school.org. You can have school.org on the Internet (Internet scope of users point 1) and school.local on internal machine (LAN scope of users).
Lookup has started…
Trying "example.com"
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 53292
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 4, AUTHORITY: 0, ADDITIONAL: 1
;; QUESTION SECTION:
;example.com.                   IN        ANY
;; ANSWER SECTION:
example.com.     10800          IN        SOA          example.com. admin.example.com. 2013010907 3600 900 1209600 86400
example.com.     10800          IN         NS          server.example.com.
example.com.     10800          IN         MX          10 server.example.com.
;; ADDITIONAL SECTION:
server.example.com. 10800       IN          A          192.168.1.20
Received 145 bytes from 127.0.0.1#53 in 2 ms

DB connection is doing a DNS lookup

I have an application coded in Java which checks the oracle database if any new record is added.
so the line of code for eastablishing the conection is :
java.sql.Connection conn = � DriverManager.getConnection ( "jdbc:oracle:thin:@10.3.7.197:1521:DEV", "lot3","lot3" );
the application checks the database every 2 mins for any new records.
everytime the appln tries connecting to the DB, it is doing a DNS lookup. IS there any way to stop this DNS lookup?
the appln is running on AIX Unix machine.
Can anybody please help me?

I have an application coded in Java which checks the
oracle database if any new record is added.
so the line of code for eastablishing the conection
is :
java.sql.Connection conn =
DriverManager.getConnection (
"jdbc:oracle:thin:@10.3.7.197:1521:DEV",
"lot3","lot3" ); Wow, what a wasteful way to do it.
>
the application checks the database every 2 mins for
any new records.
everytime the appln tries connecting to the DB, it
is doing a DNS lookup. IS there any way to stop this
DNS lookup?Stop your application.
Maybe a better solution would be to pool database connections. That would amortize the cost of acquiring the connections.
Who writes the records in your database? If it's another application outside your Java app you're out of luck, but if it's just other objects inside your app I'd recommend that you take better advantage of the Java Beans event model and have writers notify others when they've written to the database. It's far less wasteful of resources.
he appln is running on AIX Unix machine.
Can anybody please help me?

E3000 file and printer sharing issues

Yes, there is at least one other thread on this but it looked a bit stale.
Last Friday I replaced my BEFSR41 router and WRT54G wireless access point (which had gone brick on me) with an E3000.The E3000 is configured as a DHCP server at 192.168.168.65 with a scope of 66-115. The only other non-default setting is that I opened up the custom port for my slingbox.
Prior to making the switch, I had several network shares on an XP desktop that I used frequently from my Vista laptop. Now, however, I can no longer even "see" any other computer from any of the computers on the network, much less access their shared folders. In other words, if I view the network from any of these machines, the only machine that shows up is the machine itself. Everything else (internet access, slingbox, a print server) is working just fine.
One of the suggestions in the other thread was to turn off Norton Internet Security, which is of course not a viable option. However I did check the settings, relaxed the network default to "Shared", and raised the XP desktop to "Full Trust". This had no effect.
I pinged the various computers, and was able to do so by their IP addresses, but not by their computer names (that worked with the old router). On a hunch, I tried creating a mapped drive, and that also worked when I used the IP address, but not when I used the computer name.
So - there's nothing wrong with the network configuration, or with how the shares are set up, and Norton isn't the problem. The only problem seems to be that names aren't being resolved, which could be affecting windows discovery, too. Did the BEFSR41 provide some local DNS functionality by default, and the E3000 doesn't? Is there an option I need to enable? If so, I can't find it. Perhaps I should explicitly add the E3000's internal IP address as a third nameserver??
A note on the "support" I tried to get before I turned to the forums: The "Chat agent" asked a bunch of questions, misunderstood my configuration and my problem, and once he finally did understand said "we don't support file and printer sharing". It took me several more questions to learn that he really meant that the Chat facility isn't the place for these questions - I had to call the 800 number. I did that, and after several minutes on hold, reached an agent. After going through everything again, and with the rep going on hold several times to "speak to his supervisor", he said it was "beyond his competence". I was eventually told I had to call another FEE-BASED service. I told him that was unacceptable.

Ok, another update and possibly some clues.
I was curious why at one point, when all the computers were in Workgroup2, that "Workgroup" still showed up in Explorer under the list of networks, but only on the two XP machines. Netscan showed this group association as well, which I then realized was the E3000 itself, in its role as a [I]potential[/I] NAS server. However there was no storage device attached.
Could this in itself cause the access error? If so, should users be advised that if they don't plan to host any storage, that they should to go to the E3000 Storage Administration page and change the workgroup name to something other than their actual workgroup name?
In my case, I changed it to "Workgroupx", though perphaps something like "StorageGroup" would be more meaningful, especially if the Workgroup computers could still access any storage I might install in the future.
Anyway, I repeated my original approach (after the above change and a router reboot), and at least got my original Workgroup reestablished to the point where the XP machines not longer get access errors, and most machines can access the shares on the XP desktop. The steps I used on each machine were:
remove any shares I had set up on any folders
uninstalled the File and Printer Sharing service
Accessed Computer Name properties page to change the workgroup name
Shut Down
After all 4 were done, I reversed the process:
Started computer (now coming up in new Workgroup)
Reinstalled File and Printer Sharing service
Checked visibility
At this point, the XP machines could see each other, and the Win7 and Vista machines could see each other, but initially these two cliques wouldn't interact.
Next I re-added the shared folders on the XP desktop, and the XP netbook could see and access them. After about an hour, the Win7 machine joined this clique, and could also access the shares. But six hours later, the Vista machine is still clueless. Netscan shows everything of course, and I used it to set up a mapped drive on the Vista machine to one of the shared folders.
Other possibly relevant facts:
The was all working fine with the BEFRS41/WAP54G combo
I can ping all machines by IP address, but not by name
On the Vista machine I can set up mapped drives to the XP's shared folders, but again, only by IP address.
At one point I removed NWLink from the XP desktop. Now, nbtstat -r only shows the printserver's name being resolved.
The two XP machines, being SP3, lack the LLTD responder.
So,
Is it possible the NetBIOS in NWLink was providing some kind of name caching? If so, should I reinstall the protocol driver (I don't think it is available on Win7)?
Should I request and apply the KB922120 hotfix to get LLTD onto the XP machines?
Perhaps in the morning, "by name" access will have returned, as it did on my first go-round. Needless to say this has been a real pain, what with all the reboots required. At least now I remember to hit F8 so I can select Safe Mode with Networking...

What is DNS Services and why does it use so much data?

I have 300MB to use a month on my iPhone 4S (most recent iOS) and I'm normally pretty good with it because I'm connected to WiFi a lot. All of a sudden, my data usage spikes and my DNS services usage has gone up to 40MB. What is this and how do I keep it from spiking like this? It's incredibly annoying.
Also, any other tips on saving data while connected with the 3G? As mentioned before, I only have 300MB so I like to stretch it for the month.

DNS (Domain Name Service) is the Internet "address book" of web sites. Whenever you go to a site such as http://apple.com your browser must make calls to the DNS server specified in your Network Settings to translate "apple.com" into Apple's IP (Internet Protocol) address of 17.178.96.59. Any time you access any Internet resource (such as sending or receiving email, playing multi-player games, using a browser, Using any app that accesses data on the Internet such as news, weather, stocks, etc) one or more DNS lookups must be made. Many web sites have content from several different sites. Each site referenced on the page must also be looked up. Each query is small (~100 bytes), but they can add up.

Why am I getting lots of dns lookup error's after upgrading to 6.0?

Half or more of the websites I try to access give me a DNS lookup error page. It didn't happen before the upgrade.

Cannot connect after upgrading Firefox
* https://support.mozilla.com/en-US/kb/Cannot%20connect%20after%20upgrading%20Firefox
Firefox cannot load websites but other programs can
* https://support.mozilla.com/en-US/kb/Firefox%20cannot%20load%20websites%20but%20other%20programs%20can
Clear Cookies & Cache
* https://support.mozilla.com/en-US/kb/Template:clearCookiesCache
Clear the Network Cache
* https://support.mozilla.com/en-US/kb/How%20to%20clear%20the%20cache#w_clear-the-cache
Check and tell if its working.

DNS lookups and printing

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