ebtables actually skips any IPv6 extension headers like the hop-by-hop
one. So this rule is actually void.
The intend back then was to allow passing MLD messages into the mesh.
Since extension headers are skipped, the general icmpv6 rule will
actually match MLD messages. So the hop-by-hop rule is unnecessary,
too.
Signed-off-by: Linus Lüssing <linus.luessing@c0d3.blue>
the ports were interchanged, see the following packet flow:
client:546 --> [ff02::1:2]:547
server:547 --> client:546
therefore we need to allow outgoing multicast packets with dst-port 547
and unicast packets from bat0 to clients with dst-port 546 and 547 in the other direction
