tailscale

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David Anderson 320cc8fa21 net/dns: verify that systemd-resolved is actually in charge.

It's possible to install a configuration that passes our current checks
for systemd-resolved, without actually pointing to systemd-resolved. In
that case, we end up programming DNS in resolved, but that config never
applies to any name resolution requests on the system.

This is quite a far-out edge case, but there's a simple additional check
we can do: if the header comment names systemd-resolved, there should be
a single nameserver in resolv.conf pointing to 127.0.0.53. If not, the
configuration should be treated as an unmanaged resolv.conf.

Fixes #2136.

Signed-off-by: David Anderson <danderson@tailscale.com>

2021-06-15 19:52:02 -07:00

dns

net/dns: verify that systemd-resolved is actually in charge.

2021-06-15 19:52:02 -07:00

dnscache

control/controlclient, net/{dnscache,dnsfallback}: add DNS fallback mechanism

2021-03-01 18:42:03 -08:00

dnsfallback

net/dnsfallback: fix infinite loop and limit number of candidates

2021-03-04 19:19:40 -08:00

flowtrack

net/packet, wgengine/filter: support SCTP