tinc vpn interface specific dns under Linux

[Rob Townley]

Window allows one to specify a DNS domain name and DNS server for a
particular interface.
So all DNS queries of your tinc interface are sent to a particular dns server.
For instance windows tinc clients can use a particular dns server on a
private LAN available only to clients inside that NAT or tinc clients.

NetworkManager allows you to specify the same, but the tinc interface
does not show up in NetworkManager.

/usr/share/doc/initscripts*/sysconfig.txt
shows that ifcfg-ethX files allow you to specify particular DNS
servers for that interface
(sorta anyway because the docs say it just gets added to /etc/resolv.conf).
So adding   DNS1=<ip of my DNS server available over tinc net>     to
/etc/sysconfig/network-scripts/ifcfg-eth0
may get me somewhere to this goal.
But how can one add DNS1 to the tinc interface instance or at least
/dev/net/tun?
Can i just create a /etc/sysconfig/network-scripts/ifcfg-tincvpn file
and put the DNS entries in there?
Is there something i can do with tinc-up to set DNS for the tinc interface?


i am not going to add individual hosts to /etc/hosts.

man host.conf and man resolv.conf do not have the answer.

i thought for sure /etc/networks would be the solution, but 'man
networks' says that only class A, B, C networks are supported.  CIDR
notation is not.