Andrew Dunham 16ef88754d net/portmapper: don't return unspecified/local external IPs
We were previously not checking that the external IP that we got back
from a UPnP portmap was a valid endpoint; add minimal validation that
this endpoint is something that is routeable by another host.

Updates tailscale/corp#23538

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Id9649e7683394aced326d5348f4caa24d0efd532
2024-10-01 14:13:40 -04:00
..