FreeBSD 7 and SACK problems

[Anders Nordby]

Hi,

Just a heads-up to those of you thinking to use or upgrade to FreeBSD
7.0 for running Varnish. On a fairly big site here in Norway, a number
of users could not get TCP connect to our cache servers at all. This was
after upgrading all the cache servers to 7.0-RELEASE. By setting this
sysctl we could avoid the problem alltogether:

net.inet.tcp.sack.enable=0

Hopefully this will (if not already) get fixed in RELENG_7, and
RELENG_7_0. More info on the freebsd-net list.

Bye,

-- 
Anders.