git: 7b9bb32d1cc6 - main - ndp: don't send unsolicited NA for multicast address

The branch main has been updated by pouria:

URL: https://cgit.FreeBSD.org/src/commit/?id=7b9bb32d1cc6779139780baed983129b53a7f36e

commit 7b9bb32d1cc6779139780baed983129b53a7f36e
Author:     Pouria Mousavizadeh Tehrani <pouria@FreeBSD.org>
AuthorDate: 2026-03-16 20:52:32 +0000
Commit:     Pouria Mousavizadeh Tehrani <pouria@FreeBSD.org>
CommitDate: 2026-03-17 08:45:35 +0000

    ndp: don't send unsolicited NA for multicast address
    
    During link-layer address change event, don't send unsolicited
    NA for multicast addresses.
    
    Reviewed by: adrian, zlei
    Differential Revision: https://reviews.freebsd.org/D55885
---
 sys/netinet6/nd6.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/sys/netinet6/nd6.c b/sys/netinet6/nd6.c
index 5b93c7f115e9..88f159a6af43 100644
--- a/sys/netinet6/nd6.c
+++ b/sys/netinet6/nd6.c
@@ -239,7 +239,8 @@ nd6_iflladdr(void *arg __unused, struct ifnet *ifp)
 	 */
 	NET_EPOCH_ENTER(et);
 	CK_STAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
-		if (ifa->ifa_addr->sa_family == AF_INET6)
+		if (ifa->ifa_addr->sa_family == AF_INET6 &&
+		    ! IN6_IS_ADDR_MULTICAST(IFA_IN6(ifa)))
 			nd6_grand_start(ifa, ND6_QUEUE_FLAG_LLADDR);
 	}
 	NET_EPOCH_EXIT(et);