Clients not creating DNS records

I have the following setup in a lab...

1 full 2k8 server not running any roles, just a member of the domain
1 core server running hyper v
  1 virtual 2003 server as the DC for running AD, DNS, WINS, and DHCP
when i joined the 2k8 server to the domain dns records were created just fine, this server has a static IP.. when i joined a XP laptop to the domain it wouldnt create any DNS records. When i connected another laptop to the network but didnt make it a part of the domain, it got an ip and created a record in the reverse zone but not the forward zone...any idea why the clients cant create dns records for themselves??
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akalbfellAuthor Commented:
instead of connecting the laptop on the domain via wireless, i plugged it into the same router that the servers were plugged to and it grabbed an IP and registered with DNS right away...why isnt that happening using the wireless?
I am using a regular Linksys wireless router, servers plugged in, laptops wireless
Henrik JohanssonSystems engineerCommented:
Dynamic DNS registration is done through DHCP.
Check if wireless router has a DHCP server that nead to be disabled.
Yeah as henjoh09  said you need to have your router acting only as a gateway because it seems enable and it is conflicting with the domain dhcp server task, also make sure ur DHCP  setting  has the server as the  DNS server not the router, Meaning your  Server should be your  DNS and DHCP, the router is only gateway for the server roles  to  function correctly. Also you have to ensure the Dynamic is enabled on DHCP for when the dhcp gives any ip it also registers it at the DNS both ways  forward and reverse.
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akalbfellAuthor Commented:
already did all that. router has DHCP off and dhcp is handing out correct dns server. running an ipconfig /all on the client shows the correct dns server on the xp client...any other ideas?
Henrik JohanssonSystems engineerCommented:
Does ipconfig/all show the correct DHCP server?
akalbfellAuthor Commented:
Henrik JohanssonSystems engineerCommented:
It looks like the option 81 isn't handled as expected through the wireless router.
On DHCP-server, right-click servername -> Properties -> DNS
Enable "Dynamically update  DNS A and PTR records for DHCP clients that do not request updates"
and/or "Always dynamically update DNS A and PTR records"
akalbfellAuthor Commented:
already had that
Henrik JohanssonSystems engineerCommented:
Also check the last checkbox.

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akalbfellAuthor Commented:
yep that did the trick.
Why did checking that last box work? Odd that it worked fine over the wired connection but had to enable that option to have it work over wireless.
akalbfellAuthor Commented:
great help, quick responses, accurate directions..thanks
Henrik JohanssonSystems engineerCommented:
The DHCP server registers PTR record in DNS.
The DHCP server sends DHCPACK including option 81 to the client instructing it to register the A-record in DNS. Not sure why, but by some reason that is prevented from being completed through the wireless router.
akalbfellAuthor Commented:
thanks for the help
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