--- zzzz-none-000/linux-4.9.279/net/sched/cls_api.c	2021-08-08 06:38:54.000000000 +0000
+++ puma7-atom-6591-750/linux-4.9.279/net/sched/cls_api.c	2023-02-08 11:43:43.000000000 +0000
@@ -439,7 +439,7 @@
 	}
 
 	if (unicast)
-		return netlink_unicast(net->rtnl, skb, portid, MSG_DONTWAIT);
+		return netlink_unicast(net->rtnl, skb, portid, MSG_DONTWAIT, 0);
 
 	return rtnetlink_send(skb, net, portid, RTNLGRP_TC,
 			      n->nlmsg_flags & NLM_F_ECHO);