[rphlx]

They use a different TCP/IP stack which implemented SACK without introducing this bug.

It's a Linux-specific implementation defect, not an intrinsic problem with the TCP SACK wire protocol or spec.

[jontro]

They found a bug in FreeBSD too: https://github.com/Netflix/security-bulletins/blob/master/ad...

[temprature]

That's in Netflix's custom stack that they contributed to freebsd, and not used by default.

[loeg]

FWIW the FreeBSD bug only affects the RACK tcp algorithm, which isn’t the default (I think).

[bifrost]

Correct, its not enabled by default.