TCP_RACK, TCP_BBR, and firewalls

From: Alan Somers <asomers_at_freebsd.org>
Date: Fri, 12 Jul 2024 23:43:19 UTC
I've been experimenting with RACK and BBR.  In my environment, they
can dramatically improve single-stream TCP performance, which is
awesome.  But pf interferes.  I have to disable pf in order for them
to work at all.

Is this a known limitation?  If not, I will experiment some more to
determine exactly what aspect of my pf configuration is responsible.
If so, can anybody suggest what changes would have to happen to make
the two compatible?

-Alan