On Wed, 03 Jun 2020 17:30:55 +0100
Steve Harriss (steve(a)i-db.com) said:
This is puzzling me. I have been on a server attempting to set up
radicale but nothing to interfere with the networking function of the
server - as far as I knew.
I recently (23rd May) had a similar problem at home. Something (I
suspect an update to wireguard) caused "openresolv" to install, and
that blew away my hand-crafted resolv.conf file, replacing it with
a trivial file like the one you've quoted. "apt-get purge openresolv"
followed by restoring my lovingly-created resolv.conf fixed things.
Cheers,
Alun.