Date: Wed, 19 Jul 2023 11:54:23 +0000 From: bugzilla-noreply@freebsd.org To: net@FreeBSD.org Subject: [Bug 233683] IPv6 ND neighbor solicitation messages fail to arrive Message-ID: <bug-233683-7501-xauGRN91FQ@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-233683-7501@https.bugs.freebsd.org/bugzilla/> References: <bug-233683-7501@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233683 --- Comment #13 from Kristof Provost <kp@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.
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