Re: [PATCH maint v2 3/4] batman-adv: mcast: fix duplicate mcast packets in BLA backbone from mesh

On Wed, Sep 09, 2020 at 04:53:57PM +0200, Linus Lüssing wrote:

So the only solution I could think of for now is excluding DHCPv6 from multicast feature in TX of the originator... (in batadv_mcast_forw_mode_check_ipv6(), adding excludes for ff02::1:2 and ff05::1:3).

Ah, wait, we could distinguish them. Just noticed that the gateway feature uses a unicast 4 address header, while the multicast feature uses a simple, 3 address unicast header.

That should work. But might look a bit hacky. And would disallow using a 4 address header from the multicast feature in the future.