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Re: MTU problem

To: "LinuxVirtualServer.org users mailing list." <lvs-users@xxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: MTU problem
From: Joseph Mack NA3T <jmack@xxxxxxxx>
Date: Wed, 22 Nov 2006 17:28:34 -0800 (PST)
On Wed, 22 Nov 2006, Per Jessen wrote:

iptables -I OUTPUT -p tcp --tcp-flags SYN,RST,ACK SYN,ACK  -j TCPMSS
--clamp-mss-to-pmtu


This seems to have done the trick, but can anyone can explain to me
exactly why?

I've come in late on this and Ratz is the one who figured
out changing the MTU for the route rather than for the
interface, so I'm letting him handle it.

setting mss is covered a bit in

http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.LVS-Tun.html#MTU

also see

http://www.austintek.com/LVS/LVS-HOWTO/HOWTO/LVS-HOWTO.LVS-Tun.html#tunl_mtu_solved

Joe

--
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
generator at http://www.wm7d.net/azproj.shtml
Homepage http://www.austintek.com/ It's GNU/Linux!

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