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Date:      Fri, 17 Dec 2004 15:22:22 -0800
From:      Brooks Davis <brooks@one-eyed-alien.net>
To:        Mike Hunter <mhunter@ack.Berkeley.EDU>
Cc:        Donatas <donatas@lrtc.net>
Subject:   Re: vlan double tagging
Message-ID:  <20041217232222.GB32399@odin.ac.hmc.edu>
In-Reply-To: <20041217230349.GA15905@ack.Berkeley.EDU>
References:  <005801c4e42a$a1825890$9f90a8c0@donatas> <20041217223519.GB27607@odin.ac.hmc.edu> <20041217230349.GA15905@ack.Berkeley.EDU>

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On Fri, Dec 17, 2004 at 03:03:49PM -0800, Mike Hunter wrote:
> On Dec 17, "Brooks Davis" wrote:
>=20
> > On Fri, Dec 17, 2004 at 01:22:02PM +0200, Donatas wrote:
> > > hello,
> > > i'd like to ask if there's any possibility to pass double tagged vlan=
 packets through freebsd 5.x routers?
> > > and....how many level1 vlans are supported on one parent device?
> >=20
> > I don't know what happens with double tagged vlan packets.
>=20
> I think what he's asking about is whether FreeBSD prevents any of the
> nasty hacks that can be accomplished by double-tagging frames, or if there
> is something he can do with netgraph to prevent such badness.

My suspicion is that FreeBSD will drop the packets unless you configure
a vlan interface on the vlan interface.

-- Brooks

--=20
Any statement of the form "X is the one, true Y" is FALSE.
PGP fingerprint 655D 519C 26A7 82E7 2529  9BF0 5D8E 8BE9 F238 1AD4

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