From owner-freebsd-net@FreeBSD.ORG  Wed Jul 12 05:27:59 2006
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Date: Wed, 12 Jul 2006 07:27:11 +0200
From: =?ISO-8859-1?Q?Sten_Daniel_S=F8rsdal?= <lists@wm-access.no>
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To: Dmitry Pryanishnikov <dmitry@atlantis.dp.ua>
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Cc: freebsd-net@freebsd.org
Subject: Re: if_rl VLAN support in RELENG_4
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Dmitry Pryanishnikov wrote:
>=20
> Hello!
>=20
>   In RELENG_4, RealTek 8129/8139 driver rl(4) doesn't claim VLAN suppor=
t
> (when I assign vlandev rl0, my vlan device initially gets mtu 1496). In=

> modern (e.g. RELENG_6) systems if_rl claims native VLAN support. I've
> tried setting 'ifconfig vlan0 mtu 1500' for rl-based vlan device, and
> resulting interface Just Works (TM) (1500-byte packets trasmit and rece=
ive
> correctly via such a vlan). So is it safe to use vlan with 'vlandev rl0=
'
> and 'mtu 1500' in RELENG_4? Has anyone observed any ill-effects in such=

> a configuration? Would it be simple enough for if_rl in RELENG_4 to
> just announce native VLAN support to the system?
>=20
> Sincerely, Dmitry

Not necessarily. I would assume, without looking, that you would also
need to enable oversized frame support.

--=20
Sten Daniel S=F8rsdal