Followup on r364922. Old comment said that the only reason to put

the hook at queue mode was that mn_rx_intr() doesn't run at splnet
level. In today's netgraph the only legitimate reason for queue mode
is recursion avoidance. So I see no reason for queue mode here.

Not tested!

sys/dev/mn/if_mn.c

@@ -743,8 +743,6 @@ ngmn_connect(hook_p hook)
 	if (!(u & 1))
 		printf("%s: init chan %d stat %08x\n", sc->name, chan, u);
 	sc->m32x->stat = 1; 
-	/* force outward queueing */
-	NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook));
 
 	return (0);
 }