Date: Sun, 21 Oct 2012 03:54:35 +0700 From: Eugene Grosbein <egrosbein@rdtc.ru> To: Nikolay Nevzorov <nevzorovn@gmail.com> Cc: freebsd-net@freebsd.org, yongari@freebsd.org Subject: Re: kern/171520: [alc] alc network driver + tso + vlan does not work. Message-ID: <50830F8B.4030204@rdtc.ru> In-Reply-To: <CAHtHi9kphRZnX53mKeWzG3HcJoq8-E1Cb1JJTQsrybqLwPGk1g@mail.gmail.com> References: <201210180141.q9I1f53s052539@freefall.freebsd.org> <CAHtHi9kphRZnX53mKeWzG3HcJoq8-E1Cb1JJTQsrybqLwPGk1g@mail.gmail.com>
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20.10.2012 20:06, Nikolay Nevzorov wrote:
>> Synopsis: [alc] alc network driver + tso + vlan does not work.
It seems you use libalias-based NAT, don't you?
man ipfw says in the BUGS section:
Due to the architecture of libalias(3), ipfw nat is not compatible with
the TCP segmentation offloading (TSO). Thus, to reliably nat your net-
work traffic, please disable TSO on your NICs using ifconfig(8).
Eugene Grosbein
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