PF slowing down file copies

[Giorgos Keramidas]

On 2007-02-23 02:36, RW <fbsd06 at mlists.homeunix.com> wrote:
> On Thu, 22 Feb 2007 23:45:06 +0100 J65nko <j65nko at gmail.com> wrote:
> > The OP did not keep state on TCP connections using "flags S/SA". That
> > can cause problems for  TCP window scaling (defined in RFC 1323)  and
> > result in stalling connections.
> >
> > From http://undeadly.org/cgi?action=article&sid=20060928081238 under
> > "Create TCP states on the initial SYN packet"
>
> How can a TCP connection start with anything other than an initial SYN
> packet?

Misconfigured load-balancers are a common culprit for this sort of bug :)