Route specific layer 2 traffic output to another interface

Asked Nov 22 '16 at 08:13

Active Dec 16 '18 at 11:35

Viewed 397 times

Supposing I have 1 interface (wlan0) and 1 virtual interface (wlan0:0).

What I want is to route specific layer 2 traffic (arp request only for example) from wlan0 to wlan0:0

My problem is very similar to the following question, but for layer 2: Only allow certain outbound traffic on certain interfaces

edited Dec 16 '18 at 11:35

Rui F Ribeiro

asked Nov 22 '16 at 08:13

Duke Nukem

you want to filter packet based on layer 2 protocols ? – Wissam Roujoulah Nov 22 '16 at 08:20
yes, redirect outgoing layer 2 traffic from wlan0 to wlan0:0. If possible, only specific layer 2 traffic (like just ARP for example). – Duke Nukem Nov 22 '16 at 09:38
what do you mean 'redirect' – Wissam Roujoulah Nov 22 '16 at 09:42
you can match the arp request and send a arp replay with any mac you want, but redirect i can't see the point of that – Wissam Roujoulah Nov 22 '16 at 09:56
Simulating a VPN is a nice example of that. ARP request is forwarded into the VPN. I want to do a similar thing, excepted that I don't want to redirect all traffic but only ARP for example, to a virtual interface. – Duke Nukem Nov 22 '16 at 12:08

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