Wade Simmons b93c3bfed6 multiport: fix review findings in lane probing and recv_error ...

- Don't probe lanes on a tunnel idle in both directions, and don't count lane
  probes or their acks as tunnel traffic. A lane's own keepalive was keeping
  idle tunnels from ever being dropped by tunnels.drop_inactive.
- Accept a recv_error from an up lane's target. The peer answers lane traffic
  from the lane socket it arrived on, and the spoof guard only accepted the
  base remote, so recv_errors for lane traffic were ignored.
- Keep the probe generation across a lane reset, so an ack for a probe sent
  before a roam can't promote the lane on the new path.
- Bring handshake.proto in line with payload.go: field 3 is reserved and
  TxLanes is field 4.

2026-10-01 16:50:45 -05:00

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multiport.md

multiport: fix review findings in lane probing and recv_error

2026-10-01 16:50:45 -05:00