I am trying to configure a debian stretch box to provide certain services to
my home network. (In the past this was a wheezy box, and I had everything
working fine. I have not changed the configuration of any other machine; so,
for example, DNS requests from machines on the LAN are still sent to the
stretch machine for resolution.)
Somehow I can't get name resolution to work except locally on the stretch box
itself.
Can someone please point me to intelligible instructions as to how to have the
stretch box respond correctly to remote DNS requests coming in over the local
network?
This seems to be one of those things that systemd has taken over ("named" is
no longer available in the repository, for example, presumably because it's no
longer needed), and my attempts to find documentation on how to configure a
machine as a DNS server under systemd have failed, probably because I'm not
being sufficiently smart about search terms.
Just to be clear:
1. If I ping a destination by name from the stretch box, it resolves the
name and pings the destination.
2. If I ping the IP address of a destination on the internet from a machine
on the LAN, the ping works.
3. If I ping a destination on the internet *by name* from a machine on the
LAN, the ping does not work.
4. Any attempt to resolve a name from a machine on the LAN fails; attempting
to resolve the same name from the stretch machine works.