7.0 - slow/unstable Internet access via Linux router

[Dmitry Antipov]

Jeremy Chadwick wrote:

> Sounds like TCP stack breakage, and not so much an MTU problem.
> 
> I read many months ago that some others having this problem solved it by
> disabling RFC1323 extensions (default is on), which is a little odd, but
> it worked for a couple people.  Try doing "sysctl
> net.inet.tcp.rfc1323=0" and see if the problem goes away.  If it does,
> put tcp_extensions="no" in /etc/rc.conf.
> 
> I can't reproduce this behaviour, though, on my own setup at home (using
> em(4) gigE NICs on the BSD box, and Broadcom BCM47xx 10/100 NICs on the
> Linux box (a WRT54GL).

Is it required to have 'options INET6' even if I'm not using any IPv6
connectivity ?

Also I have occasional 'mskc0: Uncorrectable PCI Express error' messages,
which is a known (http://www.freebsd.org/cgi/query-pr.cgi?pr=kern/119613)
problem...

Thanks,
Dmitry