SL Losing AD Binding - DNS Problem -

Hi,
Having successfully built our dual boot Mac suite (XP and 10.6) we have had no real issues until yesterday, when to my surprise after restarting all the Macs following a sent Unix command via ARD to set the firmware password they all lost their connection to AD. Directory Utility informing me that the server is not responding.
Now I don't think the firmware password being set caused this issue, and after rebinding a few machines and lots of testing and changing DNS TTL values, host file changes on the Mac and interval time changes for the computer account password I couldn't figure it out.
I restarted the windows server (2003) that DNS resides on (there are two DC's both 2003 with DNS on both replicating) and then restarted all the Macs and they all connected to AD again, even the ones I'd done nothing on. So my investigation moved to the windows server but I can't find anything that looks out of the ordinary.
After trawling through the logs on the Mac again I have noticed the lack of confirmation of the machine successfully registering it's hostname.
When the machine is connecting to AD fine I get log messages saying:
configad[14] setting hostname to "ICTMac07-Aidans.local"
configad[14] network configuration changed
configad[14] setting hostname to "ictmac07-aidans.domainname.org.uk"
com.apple.directoryservices[11] successfully registered hostname with DNS
When the machine is not connecting to AD I get all the messages except the last one: successfully registered hostname with DNS.
Checking the DNS server there is a record for it both in the forward and reverse zones. Restarting the windows server and AD connection resumes.
So does anyone know what might be up on the windows box? Or where I can look on the Mac to find a error message about not registering the hostname as the lack of a message is not much to go on.
Thanks in advance.

I don't know what's causing the problem, but I'm pretty sure the inability to update DNS a side effect of being unable to use AD, not the cause (and so it's not a useful indication of where the actual problem is). Updating DNS is done by the AD connector, via AD itself, so if you can't talk to AD it's going to fail.

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I am having a DNS problem with my computer. My laptop connects to the internet and my skype works normally but when i try to surf the web it says "DNS Look up failed".

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I am having a DNS problem with my laptop. It connects normally to th e wifi internet but when i try to surf the net it says "DNS Look up failed"
This problem only occurs when with the internet at my house. whenever i connect elsewhere my computer works normally. My ipod, iphone, tablet and other friends computers work normally when they are connected to my internet. i use dmy neigbours nework a couple of times from my house and it wrks normally.
Also when i turn my laptop on or off i can browse for a few minutes or seconds before it fails again. My skype works like there is no problem
WHAT I HAVE TRIED TO RESOLVE IT
I have tried changing the DNS, i used open DNS and google free DNS and it still didnt make a difference.
I have rebooted router many times, nothing
I have changed my home router, nothing
I backed up my computer, resored everything it to factory setting and put everything back on; still nothing
Run a diagnostics at 'Best buy' and they say nothing is wrong; but i know there is something wrong with the DNS
I have tried different "sudo" type of codes on my comupter from stuff i got online and nothign has proved fruitful yet.
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Hello All,
I've been fighting this virtual machine networking problem for over a week now. If anyone has a well-informed suggestion (not a guess) I would appreciate hearing about it.
Here's the problem in a nutshell and then I'll give more details: I'm running Windows 7 Ultimate (64 bit) as my primary (i.e., host) OS. I'm running Windows 7 Home Professional (32 bit) as the guest OS in "Windows Virtual PC" (note that this is *not* the same as "Virtual PC 2007"). If I configure the VM to use my host's wired Ethernet connection, the guest OS can always see the machines on my local network and can always reach the Internet just fine. On the other hand, if I configure the VM to use only my host's wireless connection then the guest OS can still see machines on my local network but CANNOT reach the Internet, except very intermittently (e.g., for maybe 1-2 minutes every hour or so).
I've tried to anticipate the questions you might ask so here is some additional information:
The computer is a Lenovo W500 laptop running Windows 7 Ultimate, 64-bit. The wireless network adapter is an "Intel WiFi Link 5300 AGN".
My Internet connection is via AT&T DSL using a wire2 wireless modem/router.
I have all the updates from Microsoft and Lenovo for this machine. It is 100% up to date with the latest patches and drivers.
I'm running the 64-bit version (or at least I used the 64 bit installer) of "Windows Virtual PC" which I downloaded from this link.
I am *not* running and I did not download "XP Mode".
When the guest OS loses it's connection to the Internet the following message appears in the Windows Event Log:
"Name resolution for the name address.yahoo.com timed out after none of the configured DNS servers responded."
I am able to ping an external machines outside my network but only if I use the IP address. If I specify the host name it cannot be resolved.
ARE YOU GETTING THE IMPRRESSION THIS IS A DNS PROBLEM??? It looks like I do not have access to a DNS when using the host's wireless connection.
On the host OS, the "Virtual PC Network Filter Driver" *IS* installed and selected under my "Wireless Network Connection Properties" settings.
Below are the results of running ipconfig on the guest OS and then the host OS. Note that I am able to ping 192.168.1.254 from the host OS but not from the guest OS. I think this is the crux of the problem.
Here's what I get from an ipconfig /all executed on the guest OS:
Windows IP Configuration
   Host Name . . . . . . . . . . . . : Win7_01
   Primary Dns Suffix . . . . . . . :
   Node Type . . . . . . . . . . . . : Broadcast
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : gateway.2wire.net
Ethernet adapter Local Area Connection:
   Connection-specific DNS Suffix . : gateway.2wire.net
   Description . . . . . . . . . . . : Intel 21140-Based PCI Fast Ethernet Adapter (Emulated)
   Physical Address. . . . . . . . . : 00-03-FF-5A-E5-8C
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::6452:ad20:724a:4d3a%11(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.1.75(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Friday, May 14, 2010 7:22:30 PM
   Lease Expires . . . . . . . . . . : Friday, May 21, 2010 7:22:30 PM
   Default Gateway . . . . . . . . . : 192.168.1.254
   DHCP Server . . . . . . . . . . . : 192.168.1.254
   DHCPv6 IAID . . . . . . . . . . . : 234882047
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-79-57-1A-00-03-FF-5A-E5-8C
   DNS Servers . . . . . . . . . . . : 192.168.1.254
   NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter isatap.gateway.2wire.net:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . : gateway.2wire.net
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Teredo Tunneling Pseudo-Interface:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
And here's what I get when I do ipconfig /all on the host OS:
Windows IP Configuration
   Host Name . . . . . . . . . . . . : LEONA
   Primary Dns Suffix . . . . . . . :
   Node Type . . . . . . . . . . . . : Broadcast
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : gateway.2wire.net
Wireless LAN adapter Wireless Network Connection:
   Connection-specific DNS Suffix . : gateway.2wire.net
   Description . . . . . . . . . . . : Intel(R) WiFi Link 5300 AGN
   Physical Address. . . . . . . . . : 00-21-6A-59-E5-8C
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::94b0:4080:c30f:95da%12(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.1.78(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : Friday, May 14, 2010 6:20:52 PM
   Lease Expires . . . . . . . . . . : Friday, May 21, 2010 6:20:53 PM
   Default Gateway . . . . . . . . . : 192.168.1.254
   DHCP Server . . . . . . . . . . . : 192.168.1.254
   DHCPv6 IAID . . . . . . . . . . . : 218112362
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-13-79-34-70-00-22-68-14-2F-CB
   DNS Servers . . . . . . . . . . . : 192.168.1.254
   NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Local Area Connection:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . : gateway.2wire.net
   Description . . . . . . . . . . . : Intel(R) 82567LM Gigabit Network Connection
   Physical Address. . . . . . . . . : 00-22-68-14-2F-CB
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
Tunnel adapter isatap.gateway.2wire.net:
   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix . : gateway.2wire.net
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Teredo Tunneling Pseudo-Interface:
   Connection-specific DNS Suffix . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e74:3ca6:3214:b4fb:72d4(Preferred)
   Link-local IPv6 Address . . . . . : fe80::3ca6:3214:b4fb:72d4%13(Preferred)
   Default Gateway . . . . . . . . . : ::
   NetBIOS over Tcpip. . . . . . . . : Disabled

Hello,
I am not very familiar wth Microsoft Security Essentials, but believe that it just makes use of the existing Windows Firewall which is present with the operating system.
To me it is odd that the guest OS reports 192.168.1.254 as the IP address for its gateway and DHCP server yet it cannot access them when pinged. Let's try pinging from host to guest (and vice-versa) and see what happens:
From the host OS at 192.168.1.78, try pinging the guest OS at 192.168.1.75.
Then, from the guest OS at 192.168.1.75, trying ping the host OS at 192.168.1.78.
Is each operating system able to ping each other?
Regards,
Aryeh Goretsky
I am a volunteer and neither a Lenovo nor a Microsoft employee. • Dexter is a good dog • Dexter je dobrý pes
S230u (3347-4HU) • X220 (4286-CTO) • W510 (4318-CTO) • W530 (2441-4R3) • X100e (3508-CTO) • X120e (0596-CTO) • T61p (6459-CTO) • T43p (2678-H7U) • T42 (2378-R4U) • T23 (2648-LU7)
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Message was edited by:
user648065

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waschbaer22 wrote:
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Message Edited by toomanydonuts on 05-16-2008 07:13 AM

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I have changed our mx record to:
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Your log shows that Sun did indeed receive your mail.
Sun's mail infrastructure has been under DOS attack for some days. Sometimes that's caused delays of up to several hours for inbound mail to get to us.
We also have had some virus infected systems pounding our servers. More delays.
We do contract with an external company to scan for spam/virus scanning. Those folk historically have lost us some mails, too.
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Hallo,
ich habe seit kurzem den WRVS4400N v2, leider habe ich ein schwerwiegendes Problem.
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Gruß
Sören Strauß
ConfigFile anbei!

Hallo Friedrich Scharz,
nein ich kann von Client aus keine Webseite Pingen!
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Several hardwired machines affected, one wifi laptop affected.
BT HH3 rebooted countless times.
Ping of BT DNS servers fail.
Ping of 8.8.8.8 (Google) ok.
Using DNS from Google ok.
Nothing on BT site to indicate problems.
Infinity installation in local exchange, connected????
Regards, Stephen.
Solved!
Go to Solution.

A factory reset will simply reset the admin and wifi password to its default values, and reset any port forwarding that you may have set up.
Android devices, by default, use DHCP, so will get the settings from the home hub. Some devices, like the Kindle, do things differently.
It quite possible for the internal routing within the HH, to get corrupted. It usually happens when the DHCP table gets full, as the HH does not appear to release unused addresses properly. This shows as missing DNS server settings on the network properties of a PC, even though the default gateway is present.
A factory reset is often suggested by the helpdesk.
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

SL Losing AD Binding - DNS Problem -

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