We have a 2008R2 core server on our network which was tombstoned. The server had DNS and DHCP for the branch. My plan was to forcefully demote the DC (as it was not replicating due to tombstone), perform a metadata cleanup, and re-promote the DC (maintaining the DHCP and DNS server roles).
The server demoted gracefully. The DC was no longer in DNS or AD sites & services. However, after attempting to re-promote the DC, I seem to be having DNS issues on the DC. DNS was manually set to itself (as it was the DNS server for the site). Even after setting DNS to another DNS server in our domain and flushing/registering DNS, I can't seem to get it to see the other servers on the network. NSLookup times out. I've checked AD Sites and Services and our inter-site transports are correct. This subnet should be replicating from our headquarters. I am using the fqdn (mydomain.local) when I try to re-add the server to the domain.
I'm able to ping other servers, I just can't reach them by hostname. I am unable to telnet to another DNS server using port 53 because Server 2008 core does not have telnet.
I also tried disabling IPv6. No luck.