Misterke a écrit : > On 2015-12-28 19:46, Pascal Hambourg wrote: > >> 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 uses >> VLAN tagging, because I have seen it with a triple-play provider, and >> in that case it is easy to identify which packets must be bridged : >> those with a VLAN tag. > > Ah, sorry for the misunderstanding. Is there any way I could find out? 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. -- To unsubscribe from this list: send the line "unsubscribe netfilter" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html