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DNS issues Cannot resolve to domain controller from site B to site A

Hello

I have two site locations A and B. I have an AD domain in site A. I am trying to extend the domain from site A to site B. The two sites are connected via VPN site to site connection using NAT over VPN as both sites unfortunately are using the same subnet. (10.0.0.x). So Site A is 10.0.0.x with NAT as 172.17.0.x. Site B is also 10.0.0.x with NAT as 172.16.0.x. I set the DNS on site B to point to site A using the NAT address. The site A Domain is address 10.0.0.6 which id NAT as 172.17.0.6. I added the 172.17.0.6 as a primary DNS entry on site B systems and I am able to resolve site A DNS hostnames by running nslookup on a site B machine. Problem is that I cannot join a machine from site B to the site A domain. I have added Host A records to the site A DNS that point the domain with the NAT IP. It does not seem to help. Any help would be greatly appreciated!

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Bill_Fleury

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biz1it

ASKER

Yes unfortunately I had to bite the bullet and change the IP's on one site. It's been a fun week....It is now working OK except for ironing out some issues with SQL jobs failing.

Thanks for your response!

Bill_Fleury

Sounds like a fun week. Keep plugging away, I'm sure there will be a few things to iron out after having to change the addresses, but it will be well worth it in the end.