Multicast: membership to (*, G) group after leaving a (S, G) group

[Fabrice Colliot]

>
> Can you try 12.0 using a 12-stable kernel and see if there are any
> differences?
>

I've updated my system to 12-stable and the behavior is exactly the same.

Just in case, this is what uname -a returns (I'm not that familiar with
FreeBSD versioning and building):
FreeBSD freebsd 12.1-STABLE FreeBSD 12.1-STABLE 682166692b2(stable/12)
GENERIC  amd64

/Fabrice