netdev - Re: VLAN and ARP failure on tg3 drivers

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Date:	Fri, 23 Oct 2009 11:12:46 +0200
From:	Benny Amorsen <benny+usenet@...rsen.dk>
To:	Gertjan Hofman <gertjan_hofman@...oo.com>
Cc:	netdev@...r.kernel.org
Subject: Re: VLAN and ARP failure on tg3 drivers

Gertjan Hofman <gertjan_hofman@...oo.com> writes:

> Dear Kernel developers,
>
> A couple of weeks ago we tried to migrate from a 2.6.24  kernel to a
> 2.6.29 kernel and noticed our VLAN application no longer works.  The
> problem is easy to replicate:
>
> 1. connect 2 PC's with a cross-over cable
> 2. set up a fixed IP address to both PC's  (say 192.168.0.[1,2])
> 3. create a vlan:  vconfig  add eth0 0.

VLAN 0 is a special case ("priority tag only"). If you're just trying to
use VLAN's, pick a different number. Also avoid 1001-1024 and 4095 if
you add switches to the mix, because some vendors have odd ideas.


/Benny

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