wgengine/magicsock: drop DERP queue from head rather than tail

Browse Source

If the DERP queue is full, drop the oldest item first, rather than the
youngest, on the assumption that older data is more likely to be
unanswerable.

Updates tailscale/corp#31762

Signed-off-by: James Tucker <james@tailscale.com>

...

This commit is contained in:

500 Internal Server Error

Gitea Version: 1.28.0+dev-477-g8b6ad49a5f