RFC5682 implementation for FreeBSD
To test the implementation, I used dummynet(4) to spike a delay from 200ms to 800ms.
RFC5682
patch_20110429_rfc5682.diff
Result
TCP spurious timeout without RFC5682 (SACK enabled)
TCP spurious timeout with rfc5682 (SACK enabled)
TCP spurious timeout without rfc5682 (SACK disabled)
TCP spurious timeout with rfc5682 (SACK disabled)
