Brad Fitzpatrick ac4cda9303 disco, wgengine/magicsock: send self node key in disco pings
This lets clients quickly (sub-millisecond within a local LAN) map
from an ambiguous disco key to a node key without waiting for a
CallMeMaybe (over relatively high latency DERP).

Updates #3088

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
(cherry picked from commit 75a7779b42164e9de250ab83158409e72054db13)
2021-10-19 12:18:17 -07:00
..