wgengine/monitor: don't spam about Linux RTM_NEWRULE events

The earlier 2ba36c294b started listening
for ip rule changes and only cared about DELRULE events, buts its subscription
included all rule events, including new ones, which meant we were then
catching our own ip rule creations and logging about how they were unknown.

Stop that log spam.

Updates #1591

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick 2021-07-19 14:30:15 -07:00
parent ec4d721572
commit e41193ec4d

View File

@ -119,6 +119,9 @@ func (c *nlConn) Receive() (message, error) {
Dst: dst,
Gateway: gw,
}, nil
case unix.RTM_NEWRULE:
// Probably ourselves adding it.
return ignoreMessage{}, nil
case unix.RTM_DELRULE:
// For https://github.com/tailscale/tailscale/issues/1591 where
// systemd-networkd deletes our rules.