Floating rule to allow ICMPv6, is that the right way...

[luckman212]

After some firewall/NAT rule cleanup and organizing I was browsing my Firewall logs and saw a fair bit of ICMPv6 traffic from :: to ff02::16 (LL multicast) being blocked:

I suppose this is "normal" as I wouldn't expect this multicast traffic to be routed anywhere, but it's cluttering the logs a bit and I don't remember seeing this before.

Is this expected behavior? I created this Floating rule and that seems to quell it but I don't know if this is what I should be doing...