[PATCH 0/3] Allow non-127.0.0.1 loopback address as host resolver

[Stefano Brivio <sbrivio@redhat.com>]

This series fixes an issue with DNS resolution reported by Andrea: if
both guest and host use systemd-resolved, reachable at 127.0.0.53, we
need to advertise a reachable address as DNS to the guest, which we
already do, but also to map UDP packets for that address and port 53
to the original host resolver address.

Otherwise, DNS resolution doesn't work at all in the guest, with
default options.

Stefano Brivio (3):
  udp: Actually use host resolver to forward DNS queries
  conf: Split add_dns{4,6}() out of get_dns()
  conf, udp: Allow any loopback address to be used as resolver

 conf.c | 92 ++++++++++++++++++++++++++++++++++++----------------------
 udp.c  | 20 ++++++-------
 2 files changed, 67 insertions(+), 45 deletions(-)

-- 
2.39.1