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Date:      Fri, 12 Mar 1999 16:50:02 -0500 (EST)
From:      Garrett Wollman <wollman@khavrinen.lcs.mit.edu>
To:        "Lennart Blomstrom" <lahna@ollbox.com>
Cc:        <freebsd-net@FreeBSD.ORG>
Subject:   vlan
Message-ID:  <199903122150.QAA06967@khavrinen.lcs.mit.edu>
In-Reply-To: <001101be6cce$2d8f9580$44c0c6c3@k9d4.isdn-adv.telia.com>
References:  <000601be6a00$ecbce820$0102a8c0@milk.newtoy.com> <001101be6cce$2d8f9580$44c0c6c3@k9d4.isdn-adv.telia.com>

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<<On Fri, 12 Mar 1999 22:20:39 +0100, "Lennart Blomstrom" <lahna@ollbox.com> said:

> I've tried to use vlan (if_vlan.c ) on 3.0 and 3.1 release .
> I've made a "hack" to set "parent" and "vlan#" via SIOCSETVLAN and I have
> changed pci/id_de.c to accept mtu > 1500.

Don't do this.  Instead, increase the advertised header length by
four.

> Trap 12
> supervisor read, page not present.

> Anybody got vlan working for TCP sessions ?

There is nothing special about TCP as far as the network interface
layer is concerned.  You haven't come close to giving us enough
information to debug this problem.  For starters, how about a stack
backtrace?  Kernel configuration?  Are you using BPF?  (If so, there
was a serious bug in the BPF handling of the vlan driver which may not
be fixed in 3.x.)

-GAWollman

--
Garrett A. Wollman   | O Siem / We are all family / O Siem / We're all the same
wollman@lcs.mit.edu  | O Siem / The fires of freedom 
Opinions not those of| Dance in the burning flame
MIT, LCS, CRS, or NSA|                     - Susan Aglukark and Chad Irschick


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