From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pascal Hambourg Subject: Re: Problems with bridge+router setup Date: Tue, 29 Dec 2015 00:28:36 +0100 Message-ID: <5681C5A4.3060607@plouf.fr.eu.org> References: <20151227142118.27861ea5@playground> <7f5d15a0a7067992b1ae21b149d64266@vpn.quintux.com> <5681128F.5090203@plouf.fr.eu.org> <5681839F.4080801@plouf.fr.eu.org> Mime-Version: 1.0 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: Sender: netfilter-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="iso-8859-1" To: netfilter@vger.kernel.org Misterke a =E9crit : > On 2015-12-28 19:46, Pascal Hambourg wrote: >=20 >> I am not saying to use VLAN tagging. I am asking whether the >> communication between the cable modem and the TV box over the LAN us= es >> VLAN tagging, because I have seen it with a triple-play provider, an= d=20 >> in that case it is easy to identify which packets must be bridged :=20 >> those with a VLAN tag. >=20 > Ah, sorry for the misunderstanding. Is there any way I could find ou= t? Yes, with a packet sniffer such as tcpdump (-e to print the link layer header) on a bridge port (not the bridge interface itself) while the TV box and the cable modem are communicating with each other.