forwarding didn't work if wlan0 is member of a bridge

Sergey Manucharian sm at
Wed Dec 23 15:08:33 UTC 2015

Excerpts from Olivier Cochard-Labbé's message from Wed 23-Dec-15 11:31:
> If wlan0 interface is member of a bridge, FreeBSD didn't reach to
> forward-back packets to wireless client
> My setup is this one:
> internet gateway <--> [net0] fbsd router [net1 + wifi-hostap in bridge0]
>  <--> wireless client
> and the problem description:
>  - wireless clients didn't receive any packet back: the fbsd-router blocks
> answers because it thinks wireless clients are "unreachable".
>  - But wireless clients can reach all IP of the fbsd-router hitself without
> problem, and fbsd-router can ping them too.
>  - Ethernet clients connected to the same bridge0 didn't have problem

I believe this is related to the fact that wifi adapter cannot have more
that one MAC address. And that becomes true when it's a member of a
bridge. There exist some tricky ways to overcome that though.


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