I have two pfSense firewalls in different location with different domains set, domain1 and domain2 so they would themselves be reachable via pf1.domain1 or pf2.domain2 or without the domain1/2 portion if the query is from a client on the same net.
They have domain overrides set for domain1 and domain2 respectively in the DNS resolver and they can reach each other via a VPN tunnel.
I want to get away with typing only the hostname from both locations so my hope is to only use domain1 and that the DNS resolvers can exchange information on hostnames. I believe a possible solution would be with a DNS forwarder on one of the locations that also allows for DHCP registrations to be forwarded but but I would like the local resolver to also resolve for domain1 if the link goes down and I’m not sure how to accomplish that? Any pointers?