On 06/18/19 at 10:33P, mike tancsa wrote: > Hi all, > With respect to the bugs describe in > https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md > *<quote> > SACK Slowness (FreeBSD 12 using the RACK TCP Stack) [snip] > > *</quote>* > > *How does I know if this is enabled in my default kernel on RELENG_12 ? > There is some vague mention in various forums this is not the default on > FreeBSD ? Can anyone shed more light as to how this does/does not impact > FreeBSD ?
RACK is one of the tcp stacks ($src/sys/netinet/tcp_stacks) and not enabled by default. So, by default, FreeBSD is not affected, afaict. This advisory is for when you do use RACK. Cheers, Hiren
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