https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233683
--- Comment #13 from Kristof Provost <k...@freebsd.org> --- Re-assigning an IPv6 address that’s already there seems to trigger this. I’m still investigating, but I believe the problem is that ifconfig deletes the IP address before setting it again. The delete ends up calling in6_purgeaddr(), which marks the relevant multicast groups as no longer needed, but leaves their actual removal to mld_fasttimo() (i.e. asynchronously). The IP address gets added again, and either the groups don’t get re-added or they don’t get marked as needed. This bit I’m still unclear on, but as I said: I’m still digging. -- You are receiving this mail because: You are the assignee for the bug.
