Use of Public DNS Server

I have an iMac, Mac Mini and a Macbook Pro connected to a Airport Extreme Base Station. I normally use a Public DNS Server and I am not sure where to put the DNS URLs. Do I put them on the individual computers or is there somewhere in the Airport Extreme Base Station that they go? where ever they belong please provide location and instructions. Thanks.

Configuring the AirPort Extreme with the DNS makes it so that you do not have to configure each individual computer on the WLAN, the DNS settings will be handed down to the devices when they are given their internal IPs, but as long as the base station does not have a competing/conflicting DNS setup, configuring each individual device, as suggested by Carolyn, works also.
However, something strange can happen sometimes when you use a public DNS setup. I use the one Carolyn suggests, OpenDNS, but I cannot access any of the webpages of my ISP with this configuration. I have Todo en Uno (All in One), a service that provides cable, telephone and internet service from my local cable company, CableVisión. So with the OpenDNS setup I cannot configure the digital options for my telephone service, such as blocking and unblocking Int'l long Distance calls. I have to remove the OpenDNS setting to do so. But I created a work around using Locations in the Network settings. I have one Location with my ISP's DNS settings and another Location with OpenDNS settings. I can quickly switch between the two when I need to access my ISP's website.
Dah•veed

Similar Messages

Using a public proxy server

If I want to use a public proxy server, do I need to install a software. I can't find any software as most of them are for Windows only.
Thanks

I just tried putting the public proxy address to the right (under HTTP and HTTPS), after I clicked applied, it seems like it still wasn't using the public proxy. I went to check out my IP from a website and still shows me original proxy address.
I am using Safari browser. Did I miss something in the setup?

Use Google's Public DNS Server To Fix Apple TV Streaming Problems

Many people have been having a streaming problem with the Apple TV - especially with Netflix. In fact, it's often the most popular topic on this forum. After having the same problem off and on for two years, I finally figured out the following solution. It uses Google's public DNS service instead of your ISPs DNS.
1. Navigate to Settings >> General >> Network and select Configure TCP/IP.
2. Select “Manually” next to Configure IP.
3. Dont change the IP address or the Subnet Mask and Router Address. Just click "Done".
4. Set the DNS Address screen with the following: 008.008.008.008 and click “Done.”
You should now be able to stream more smoothly on your Apple TV.
This problem is probably caused by a bad streaming server somewhere on Netflix's CDN (Content Delivery Network). The DNS points your Apple TV based on location. By using Google's DNS, you get a different streaming server. That is, of course, a wild guess and is not verifiable by me. But, it makes sense so I'm going with that.
If this works for you, please buy a cup of coffee for a complete stranger or some other selfless, random act of kindness.

Welcome to the  tv Discussion Forums.
Barring interference to the network (which is probably unlikely but not totally out of the question) I'd agree that your problem seems specific to one mac. IMHO reinstalling an OS is more often than not a lazy mans way of saying they can't be bothered to look for the problem and totally unnecessary so far as I am concerned. I don't believe any version of itunes has been a problem for the tv, although there have been the usual problems posted that usually accompany any upgrade (these are more than likely due to updating over damaged files).
Reinstalling itunes will replace the application but not many of the associated preference files that are more likely to be a problem than the application itself. Rather than reinstalling itunes, I'd try creating a new user and try itunes in the new user account to see if the problem persists.
You could also create a new library in the original user account and see if you have similar problems with that library.
Check your network settings and compare them to the other macs that work OK, check for proxy servers and DNS addresses.

Incorrect DNS when using DHCP. DNS server is considered to be a Virus??

Running 10.5.5. Noticed extreme slow down in resolving domains in safari, firefox. I currently use Verizon FIOS. When looking in network settings it shows a DNS server as 85.255.115.30. This is not verizon's DNS server. When I delete that server out and add the Open DNS server's address internet works great. This is not an issue on Verizon's end because any ethernet connection to any internet provider will default to using that address for DNS. Only does it over ethernet. Tried deleting the port and re adding and still comes back. No issues when booted off another drive. Mcafee says that a Trojan changes the DNS on PC's. No PC's are networked to this mac. I cannot delete this DNS server under the DNS tab in advanced settings...?

That IP address does seem to fall within the range known to have been used by the DNS changer trojan (try searching the web for "DNS changer", puper, OSX.RSPlug.A, 1023.dmg, etc.). That very likely means that at some point, malware managed to run with "root" privileges on your system.
Under such circumstances, it would be safest to back up all of your data and reinstall the OS and applications from known "good" media.

How can I get Quick VPN to use the correct DNS server IP

Right now it is defaulting to 192.168.x.1 (my RV042) I need it to default to 192.168.x.4 (Domain Controller). I need to be able to resolve names because remote users will have to log into the domain. I can not statically assign a DNS server on their machines because they are mobile, will be using WIFI hotspots and or/ wired LAN's at home.
The rv042 is obviously the router and server1 is the domain controller (also the DNS server for my LAN)
If I use nslookup to find a host it will default to the rv042 IP, so if I force the server IP in this case I get resolution with 192.168.x.4
C:\Users\XXXX>nslookup PC1 192.168.x.1
Server: rv042.xxxxxxxxxxxx.local
Address: 192.168.x.1
*** rv042.xxxxxxxxxxxx.local can't find PC1: Non-existent domain
C:\Users\XXXX>nslookup PC1 192.168.x.4
Server: server1.xxxxxxxxxxxx.local
Address: 192.168.x.4
Name: PC1.xxxxxxxxxxxx.local
Address: 192.168.x.5
C:\Users\XXXX>
Everything works right if I could just set my DNS server to .4. I came across many many posts from back as far as 2006 with poeple asking for this feature. What gives Cisco???

One of the first things to check in Mail Preferences, Composing:

ISP won't let me use my configured DNS server-what to do?

I put Open DNS servers in my Mac OS X Network Preferences (OS X 10.6) for when I use DHCP connections. This works fine on one network (DHCP to a wireless router connected to internet via DSL), but when I connect to another network, I find that I end up using the network's DNS servers - It appears my computer is sending a request out for the Open DNS IPs (208.67.222.222 or 208.67.220.220) according to Little Snitch's network monitoring, but the ISP seems to be internally changing it to their own DNS server within their network before the domain name is looked up. I can verify whether Open DNS is really used by visiting welcome.opendns.com/ or by going to the mispelled craigslist.og (which Open DNS redirects to the classified ads). The troublesome situation is when I connect by wifi DHCP to my TMobile cell phone.
What can I do about these sorts of ISPs? Is there anything I can do?
Also, is there a page I can visit to tell me the IP address of the actual DNS server used, not just what I configured in my Mac?
Thanks

- Transfer iTunes purchases to the computer by:
iTunes Store: Transferring purchases from your iPhone, iPad, or iPod to a computer
- For other music you need a third-party program like one of those discussed here:
Copy music from Ipod to new computer...: Apple Support Communities
- After all the stuff is on your computer, connect the iPod to yur computer and make a backup by right clicking on the iPod under Devices in iTunes and select Back Up.
- Restore the iPod from that backup.

How to use DNS server for name resolution for items which don't exist in active directory domain controller DNS

Dear Experts,
In our office we have a domain controller call it 'Office.com', all computers and corporate servers e.g. exchange, antivirus etc. are member of this 'office.com', it is also having a DNS. All users in office have there preferred DNS set to the corporate
DNS
We are working for ministry and offering services to them from our data center so have many servers which are for ministry but they are in our data center. For all these servers we created another DNS server which contains all entries for these servers in
forward and reverse lookup zones. In this DNS we also created a forward lookup zone for our corporate servers and zone name is 'office.com'
What we are trying to have is name resolution of all servers which are listed in other DNS build in our office on Win 2008 R2 for ministry servers
If the user change his preferred DNS to ministry DNS he can resolve the ministry server but then we can not control any thing through group policy since they are using other DNS and not the corporate DNS.
How this can be done ? like any group policy applied to corporate domain controller must take effect on users and in addition to this user must also be able to resolve server names in ministry project DNS
Please assist ASAP.
regards,

Hello,
ok so the GPO setting doesn't apply in any case.
Clients machines use the first DNS server in the list of configured ones on the NIC. If that one is available search for additional DNS servers will stop.
What i can not really understand is your description about the second DNS server. This should normally either another DC with AD integrated DNS, so everything is replicatedwithin AD replication or you use a secondary DNS on domain member server that pulls
the informations from the Master.
It sounds for me that you have configured a machine with DNS server role and created manually the zone with the same name as the domainand manually create there the required A records?
Best regards
Meinolf Weber
MVP, MCP, MCTS
Microsoft MVP - Directory Services
My Blog: http://msmvps.com/blogs/mweber/
Disclaimer: This posting is provided AS IS with no warranties or guarantees and confers no rights.

Internal and Public DNS conflict breaks mail

History:
We set up a new Mac Mini Server to replace our existing Server. The Mac Mini Server is setup behind a Time Capsule, which acts as our router and DHCP server. It also acts as our firewall on the public IP address and forwards mail to our internal server. Our situation is almost identical to the example situation on page 18 to 19 in the 'Getting Started' guide.
Our ISP acts as our DNS server and they host our public website. They also used to host our mail, but we have now moved the mail to our new in-house server. We asked our ISP to update their MX records to point to our static public IP address. Public DNS records for server.mydomain.com also resolve to this IP address.
When we originally set up the new mac mini server, the ISP had not yet updated the MX records. I am wondering if this affects how the Server sets up DNS on the local server machine?
Issue:
The local server machine on the local LAN is called server.mydomain.com, which resolves via local DNS (hosted by our server) to the server's internal IP address. (The local DNS server was setup automatically by the Server during initial installation / setup.) This conflicts with with public DNS records which identify server.mydomain.com with our public IP address at 205.200.19.225. This somehow causes confusion for the server which consequently seemingly randomly resets our domain (mydomain.com) and host name (server.mydomain.com) settings under Mail settings - which breaks our mail service. (We then edit these to the correct settings and all works again.)
I spoke to an Apple tech and they advised that we reinstall the Server operating system, using a local server name that differs from the public name. e.g. server.mydomain.lan (local) vs. server.mydomain.com (public).
*This may seem like a dumb question*: Would it be easier to keep our local host and DNS set up to server.mydomain.com and then rather have our ISP change the records for our public address / IP to mail.mydomain.com or public.mydomain.com? If we could make the change via the ISP's records versus our own, then it would save us a lot of work.
*A second potentially dumb question:* Since we rely on our ISP for DNS name servers, could we delete / stop the local DNS server for the local network and just use straight IP addresses instead?
*Plan of Action:*
Assuming that there is not an easy fix via the ISP's DNS records, then I'll reinstall the operating system and use server.mydomain.lan as the local machine and domain name. If I do this, then what should I be using as the domain and host name settings in mail? .com or .lan?
Should there be any need to manually configure DNS settings to make Mail work?

Mr Hoffman and Corbywan - thanks for the interesting and educational discussion. I must admit that I am still a bit confused and would appreciate any further help in understanding this issue!
*My situation:*
- Server on a LAN, which sits behind a Time Capsule router.
- The Time Capsule router serves DHCP and Internet to the LAN and sits on our public static IP Address.
- Our ISP has set up MX and domain records to forward public requests for our domain to our static IP address.
- Time Capsule acts as our firewall and forwards Mail and other incoming services to our internal server via port forwarding.
- Local DNS service is provided by the local server so that it can provide services to the local network. Non local requests are forwarded to the ISP DNS service.
*The problem*
We seem to have established that Snow Leopard Server breaks when the internal domain name matches the public domain name, because of conflict between the internal and public DNS which resolve to different IP addresses for the same domain.
*The solution*
I am looking for the easiest and most basic way to fix this problem. My understanding is that the simplest would be to reinstall our Snow Leopard Server to a new and different local domain name.
I am thinking of using server.example.lan for our local LAN domain name - which would be resolved to our private IP address via local DNS on the local server. I would be keeping server.example.com for our public domain name - which would be resolved to our public IP address, which would be forwarded from the Time Capsule to the internal server.
Now where I start getting confused is this: If Snow Leopard Server requires a Fully Qualified Domain Name to do things like send mail, then do I need to register my internal domain name? And how would this resolve from a public DNS server to the internal private IP address? Or is it more an issue where as long as the internal (albeit 'fake') domain name does not conflict with an existing public domain name?
*Other items:*
After setup, I will verify that Snow Leopard Server has setup our local DNS correctly for local DNS service.
If I understand correctly, I would set up Mail Settings - 'Domain Name' as the local domain name: i.e. example.lan and I would set up the Host Name as server.example.lan - is this correct? Would this work if these are not FQDN?
How does the mail server reconcile these local domain names with the public domain names? I assume that I need to check the box at Mail - Settings - Advanced - Hosting: "Include server's domain as local host alias" ? Or would I manually add an alias to the Local Host Aliases under the same tab?
Thanks!

How to install external DNS Server on Windows server 2008?

After 2 days hard working I'm confused about DNS servers.
i registered a domain name and want to host my own DNS for my website.
i install DNS Role and IIS on a windows server 2008 R2 and config them all and set 127.0.0.1 and 8.8.8.8 on my network interface on my serve .
on my server i have 2 website
dns1.mysite.com //to set it on my domain panel as name server
mysite.com //hosting
now everything work on my server , when i type mysite.com at my web browser i can see my site.and when i ping mysite.com it reply my server static ip.
but on internet it does not work. i mean if you type dns1.mysite.com or mysite.com not works and i got request time out when i ping theme.
at this state if you set my server IP as DNS server at your network adapter(interface) everything work great.
how can i have a DNS Server like that hosting using on our domains like dns1.godaddy.com ?
i should register my DNS on any where like a organization or website or...?

For the local nic you should _always_ configure dns servers that have the same scope. I think 8.8.8.8 and 127.0.0.1 will never have the same scope. Note that the configuration of multiple dns servers is only there for failover purposes. If the first one
is working, the second one is never used.
You should create a zone on your dns server matching your domain, and you should request your registrar to make your server authorative over your zone. Some providers let you configure this yourself (on a weninterface), so please consult the documentation
provided by the service provider/registrar. If in doubt, they will be the primary contact point as the required configuration depends on theirs.
Note that when you want to host a public dns server, the server should be reachable from the internet on port 53 tcp/udp and you should follow guidelines for serrver security very strictly.
Also be aware updates on dns servers need some time to be applied worldwide due to caching that has to expire and zone transfers that might be needed. be patient.
MCP/MCSA/MCTS/MCITP
Thanks SenneVL for your nice answer .
my server IP is static and reachable from Internet,then why when you add my server ip on your network adapter as a DNS it works and you can type mysite.com on your browser and see my site?
you said "Also be aware updates on dns servers need some time to be applied worldwide due to caching that has to expire and zone transfers that might be needed. be patient."
how long it takes?

DNS server provided by VPN to Mountain lion doesn't work

We are producing proprietary VPN server and client. After upgrade to Mountain lion the DNS stopped working. I noticed that if_index is now in the dns resolver decription when scutil --dns is used for listing. This if_index refers to the physical network interface. So I tried to send public DNS server from our VPN server. It helped because the DNS resolution is done over physical interface. Problem is that we need to use private DNS server, that is the purpose of VPN. The only suspicious piece of code is
str = SCDynamicStoreKeyCreateNetworkServiceEntity(0, kSCDynamicStoreDomainState, gs_dynamicCache.m_serviceId, kSCEntNetIPv4);
whic copies IPv4 settings from primary IPv4 sesrvice. Can you recommend good article where I would find and understand DNS reolution guidelines for Mountain lion? It is impossible to find something about that if_index. And we are pretty sure that it works correctly on Lion.

cima.m wrote:
We are producing proprietary VPN server and client.
Please don't. People absolutely detest those things. MacOS X includes perfectly good VPN clients that work far better than any proprietary VPN. Why don't you just change the server to work with what ships with MacOS X?

Can't specify DHCP DNS server ip with a 255 in it

I tried to add 64.102.255.44 a valid ip addres and a public DNS server to my DHCP configuration but the web interface says ip must be in the range 0-254. How can I report this bug?

Not sure which router you have, but I have a WRT54G V5 that I was able to add that IP address as a Static DNS Server without a problem....
You may need to call the Linksys/Cisco tech support number or use an online chat to report the bug...
Tomato 1.25vpn3.4 (SgtPepperKSU MOD) on a Buffalo WHR-HP-G54
D-Link DSM-320 (Wired)
Wii (Wireless) - PS3 (Wired), PSP (Wireless) - XBox360 (Wired)
SonyBDP-S360 (Wired)
Linksys NSLU2 Firmware Unslung 6.10 Beta unslung to a 2Gb thumb, w/1 Maxtor OneTouch III 200Gb
IOmega StorCenter ix2 1TB NAS
Linksys WVC54G w/FW V2.12EU
and assorted wired and wireless PCs and laptops

DNS server isn't responding to certain IPs

Hi,
I have a laptop with DNS problem. It ping any internal ip but domain controller(my DNS server). if I change dns server to google's public dns, it works but I want to use my own dns server.
If i change IP address it works. If I give that IP address to another computer, the computer gives the same DNS error. So I figure out that this IP address is the problem and I have 3 IP addresses like this with the same problem.
How can I find out if My dns block that ip or How can resolve this issue?
Thank s in Advance.

Hi Mugurlu ,
What do you mean by saying :” It ping any internal ip but domain controller(my DNS server). ” .
If you mean it can’t ping the DNS server .
We could check there is route from clients to DNS server .And there is reverse route from DNS server to the clients .The firewall of DNS server should allow the network traffic .
If you mean it can’t resolve names .
First we need to ensure the firewall on DNS server allow the network traffic between server and the specific addresses .
Then we could use network monitor on DNS server to check if the query packets reached or not .
If not reached , we could check if there is route from clients to DNS server .
If reached and server responded ,we need to ensure there is route from DNS server to clients .Then we could use Nslookup on client to analyze the process .Open
Command Prompt ,type nslookup and type
set d2 .Then type a name ,we could find out the problem through the process .
If server doesn't respond ,we could enable debug logging on DNS server to analyze the process .Open
DNS Manager ,right click on DNS server and click Properties .On
Debug Logging tab ,select the box .
Here is the guide for Nslookup :
Nslookup :
https://technet.microsoft.com/en-us/library/cc940085.aspx
Best Regards,
Leo
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Support, contact [email protected]

DNS server responses extremely slow

I set up the DNS Server running on my LAN (authoritative for a fully-owned domain), and I do believe it's correctly set up - reverse mapping works fine, no error messages in the logs or while watching tcpdump, etc. It's behind my NAT/Firewall, is set to be recursive (but I have not tweaked it to make it recursive only for the subnet). My problem is with the performance. Using this internal DNS server to provide DNS for my client machines on the LAN, internet lookups are awfully slow - perhaps five to ten seconds to bring up a major site. Leaving everything else the same on a client machine, and removing the references to the internal DNS server - thus using my ISP's DNS servers outside my LAN - the same site can by fully up in one second.
Is this major lag in performance simply caused by the fact that the ISP's DNS server is so often caching many many more sites than I could ever request from my own LAN? Or should I be looking for something specific to hunt down perfformance problems?

If your server is stand-alone, you can run without internal DNS.
If OD Master, you also can run without internal DNS but config of course needs to be correct. Many people say it's best to run with internal DNS, but it's not a requirement.
One reason to run internal DNS..
If you connect to your server by fqdn (host.domain.com).
Without internal DNS, the client will connect to the public IP (wan side of your router). If your router supports loopback, this will work- if it doesn't support loopback it won't work. Even if it does work, you are forcing your client-server traffic to be processed (NAT) by the router, incredibly inneficient (although a simple config for basic requirements). If you're moving big files with AFP, you don't want all traffic to go from client-router(NAT)-server-router(NAT)client. You can get around this by connecting using .local or IP addresses. So this all depends on your config, requirements, habits of the users, etc.
JJ

How do I have a cRIO register its IP address with the DNS server, clearing any previous entries?

I've run into a problem when I try to move a cRIO-9073 from one network segment to another (say 10.1.33.x to 10.1.36.x): The old IP address remains registered on our DNS server, so trying to access the cRIO by its DNS name fails as the DNS server tells my PC to look for the old IP address.
When I search the DNS server from my PC using "NSLOOKUP" with the old IP address, it finds the DNS name of the device. If I repeat the search with the new IP address (MAX finds the device with its new address, but I hate to have users use MAX to find it), it again returns the DNS name, so it appears the DNS name is registered under two IP addresses on our DNS server. I've also repeatedly tried to flush my PC's DNS cache using command "IPCONFIG /FLUSHDNS", but it still tries the old IP address. I also see in MAX that the cRIO is using the same DNS server my PC uses.
Our IT people say that I have to tell the device to re-register its DNS name. They told me a command to do it from Windows (command "ipconfig /registerdns"), but obviously this is VxWorks on the cRIO. Is there a command to do this on the cRIO or a setting in the "NI-RT.INI" file I can change? I honestly don't think this is the issue (as it successfully registered the new IP address under its name), but I want to try it if it's possible.
Thanks!
Erik
ps - Our IT dept. won't let me use static IPs unless I get them assigned by both their MAC address AND the network jack they're connected to, so that's out.

Normally this is actually a function of your DNS server. It needs to perform a periodic flush of stale records. You can check the RFC for the DNS protocol and build the necessary packet yourself.
Mark Yedinak
"Does anyone know where the love of God goes when the waves turn the minutes to hours?"
Wreck of the Edmund Fitzgerald - Gordon Lightfoot

Bind 9 DNS Server chroot cannot work on Solaris 10 u6 and u7

My Old verion "Solaris 10 x86 Generic_Patch_118844-30" can be run "Bind 9 DNS Server" in chroot mode.
And this is no any problem.
I have been try to use "Bind 9 DNS Server" in Solairs 10 x86 u6 or u7.
The result is not any problem.
But when I turn it run in the chroot mode. the "Bind 9 DNS Server" cannot run.
I have been manuelly run the named:-
/usr/sbin/named -c /etc/named.conf -t /chroot/dns -u named -f -g
The respond is :-
13-May-2009 02:17:46.623 starting BIND 9.3.6-P1 -c /etc/named.conf -t /chroot/dns -u named -f -g
13-May-2009 02:17:46.624 found 1 CPU, using 1 worker thread
13-May-2009 02:17:46.627 socket.c:3259: unexpected error:
13-May-2009 02:17:46.627 open(/dev/poll) failed: No such file or directory
13-May-2009 02:17:46.628 ./main.c:495: unexpected error:
13-May-2009 02:17:46.628 isc_socketmgr_create() failed: file not found
13-May-2009 02:17:46.629 create_managers() failed: unexpected error
13-May-2009 02:17:46.629 exiting (due to early fatal error)
Look like the bind 9 runing in the chroot mode after that cannot find /dev/poll
Even I use Bind 9 version 9.6.0, the result is same.
So, I don't sure the problem are the Bind 9 or Solaris 10 u6/u7
I try to continous install New verion Bind 9 in my old version Solaris 10.
THE Result is NO ANY PROBLEM in old version Solaris 10.
And I already bypass the SMF problem.
Anyone can tell me what the problem in solaris 10 u6/u7?

Looks like something reported similar bug:
[BIND fails to start|http://bugs.opensolaris.org/view_bug.do%3Bjsessionid=376e1152f0ddc75829ed1725542e?bug_id=6799867]
but I am somewhat puzzled why there is no follow up on the bug fixing.
Ok, I found the source (may be?):
From named:
http://src.opensolaris.org/source/xref/sfw/usr/src/cmd/bind/bind-9.3.6-P1/bin/named/main.c
    462 static isc_result_t
    463 create_managers(void) {
    464      isc_result_t result;
    465      unsigned int socks;
    466
    467 #ifdef ISC_PLATFORM_USETHREADS
    468      if (ns_g_cpus == 0)
    469           ns_g_cpus = ns_g_cpus_detected;
    470      isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_SERVER,
    471                 ISC_LOG_INFO, "found %u CPU%s, using %u worker thread%s",
    472                 ns_g_cpus_detected, ns_g_cpus_detected == 1 ? "" : "s",
    473                 ns_g_cpus, ns_g_cpus == 1 ? "" : "s");
    474 #else
    475      ns_g_cpus = 1;
    476 #endif
    477      result = isc_taskmgr_create(ns_g_mctx, ns_g_cpus, 0, &ns_g_taskmgr);
    478      if (result != ISC_R_SUCCESS) {
    479           UNEXPECTED_ERROR(__FILE__, __LINE__,
    480                      "isc_taskmgr_create() failed: %s",
    481                      isc_result_totext(result));
    482           return (ISC_R_UNEXPECTED);
    483      }
    484
    485      result = isc_timermgr_create(ns_g_mctx, &ns_g_timermgr);
    486      if (result != ISC_R_SUCCESS) {
    487           UNEXPECTED_ERROR(__FILE__, __LINE__,
    488                      "isc_timermgr_create() failed: %s",
    489                      isc_result_totext(result));
    490           return (ISC_R_UNEXPECTED);
    491      }
    492
    493      result = isc_socketmgr_create2(ns_g_mctx, &ns_g_socketmgr, maxsocks);===========================> here. (notice the error message and the actual function called are not the same).
    494      if (result != ISC_R_SUCCESS) {
    495           UNEXPECTED_ERROR(__FILE__, __LINE__,
    496                      "isc_socketmgr_create() failed: %s",
    497                      isc_result_totext(result));
    498           return (ISC_R_UNEXPECTED);
    499      }
    500      result = isc_socketmgr_getmaxsockets(ns_g_socketmgr, &socks);
    501      if (result == ISC_R_SUCCESS) {
    502           isc_log_write(ns_g_lctx, NS_LOGCATEGORY_GENERAL,
    503                      NS_LOGMODULE_SERVER,
    504                      ISC_LOG_INFO, "using up to %u sockets", socks);
    505      }
    506
    507      result = isc_entropy_create(ns_g_mctx, &ns_g_entropy);
    508      if (result != ISC_R_SUCCESS) {
    509           UNEXPECTED_ERROR(__FILE__, __LINE__,
    510                      "isc_entropy_create() failed: %s",
    511                      isc_result_totext(result));
    512           return (ISC_R_UNEXPECTED);
    513      }
    514
    515      result = isc_hash_create(ns_g_mctx, ns_g_entropy, DNS_NAME_MAXWIRE);
    516      if (result != ISC_R_SUCCESS) {
    517           UNEXPECTED_ERROR(__FILE__, __LINE__,
    518                      "isc_hash_create() failed: %s",
    519                      isc_result_totext(result));
    520           return (ISC_R_UNEXPECTED);
    521      }
    522
    523      return (ISC_R_SUCCESS);
    524 }And in isc_socketmgr_create2():
   3384 isc_result_t
   3385 isc_socketmgr_create2(isc_mem_t *mctx, isc_socketmgr_t **managerp,
   3386                 unsigned int maxsocks)
   3387 {
<SNIP>
   3488
   3489      /*
   3490       * Set up initial state for the select loop
   3491       */
   3492      result = setup_watcher(mctx, manager);===============================>will call open() on /dev/poll.
   3493      if (result != ISC_R_SUCCESS)
   3494           goto cleanup;
   3495      memset(manager->fdstate, 0, manager->maxsocks * sizeof(int));
Other the above, I cannot really understand or help further. But I know it should fail in somewhere in setup_watcher() in socket.c.

Use of Public DNS Server

Similar Messages

Maybe you are looking for