Hi,
I've deployed a RRAS Cluster for NVGRE environment by this white paper: http://gallery.technet.microsoft.com/Hybrid-Cloud-with-NVGRE-aa6e1e9a
The cluster is running smoothly and traffic goes from VMs to Internet fine. One strange issue has come up.
The node which is running the RRAS role is unable to query the DNS at all. I mean every single query (internal or external) doesn't go through. We have static routes to our internal DNS servers and they answer to ICMP just fine. I can also ping ips from google.com and so on. Only the DNS queries fail.
If I try to run "nslookup www.google.com 8.8.8.8", it also fails. Same thing with our internal records "nslookup domain.local <dns server address>". When running Wireshark at that time, I can't get _any_ records from udp/tcp port 53.
At the same time the other cluster node works like it should be. After failovering the RRAS service to another node, the roles switch up: the other one starts working, the other one breaks up.
Any ideas how to troubleshoot further? Is there any RRAS specific DNS settings that I should be aware of?