On Fri, Feb 06, 2026 at 03:52:10AM +0100, Linus Lüssing wrote:

+static void br_multicast_notify_active(struct net_bridge_mcast *brmctx,
+				       bool ip4_active_old, bool ip6_active_old)
+{
+	if (brmctx->ip4_active == ip4_active_old &&
+	    brmctx->ip6_active == ip6_active_old)
+		return;
+
+	br_info(brmctx->br, "mc_active changed, vid: %i: v4: %i->%i, v6: %i->%i\n",
+		brmctx->vlan ? brmctx->vlan->vid : -1,
+		ip4_active_old, brmctx->ip4_active,
+		ip6_active_old, brmctx->ip6_active);

Make this br_debug() to avoid spamming the kernel log?

I am aware that this can also be notified over netlink, but it will add
extra complexity and I am not sure anyone will use, so it might be best
to defer it for now.

+}