[Openswan Users] DNS through VPN

[Alex]

Hi,

I suppose this isn't a VPN question directly, but how do I configure
DNS for a domain that's behind the VPN on one side or the other? Would
a slave zone restricted to just clients of a particular IP range be
the best approach?

In other words, I have a 192.168.1.0/24 behind the net-to-net openswan
gateway on one side, and 192.168.6.0/24 behind the net-to-net openswan
gateway on the other side, and would like to have both sides be able
to resolve hosts from the other side.

Thanks,
Alex