Re: minimum ICMPv6 message size vs. RPL's DIS

David Miller wrote:

FWIW I think this is a safe change.

Thanks !

Regarding the change to icmpv6.h, I found that the introduction
of the otherwise very nice and tidy "struct icmp6hdr_head" creates
a conflict with net/bridge/br_multicast.c:br_multicast_ipv6_rcv
which has a variable called "icmp6_type".

While it would be easy enough to rename that variable, this makes
me wonder if the change isn't too intrusive after all, I think
I'd rather go with my original idea and just change the size to 4,
with a comment why and what this is.

I'll post the patches in a bit.

- Werner