I currently have two public facing DNS servers running simultaneously, which share the same public IP address. I need them both to be accessible over TCP/UDP port 53.
I was thinking that since they each service a different DNS zone, that I could simply configure one to forward requests concerning the other's zone to the other server, sort of like the name-based reverse-proxies use by web servers. I thought about using an NS record using the other server's local IP, but I wasn't quite sure if that would work the way I want it to.
Questions:
- Is this possible?
- If so, how do I do it on a BIND server (Ubuntu Server OS)?