Index: sys/netinet6/in6_ifattach.c
===================================================================
--- sys/netinet6/in6_ifattach.c
+++ sys/netinet6/in6_ifattach.c
@@ -828,6 +828,7 @@
 in6_tmpaddrtimer(void *arg)
 {
 	CURVNET_SET((struct vnet *) arg);
+	struct epoch_tracker et;
 	struct nd_ifinfo *ndi;
 	u_int8_t nullbuf[8];
 	struct ifnet *ifp;
@@ -837,6 +838,7 @@
 	    V_ip6_temp_regen_advance) * hz, in6_tmpaddrtimer, curvnet);
 
 	bzero(nullbuf, sizeof(nullbuf));
+	NET_EPOCH_ENTER(et);
 	CK_STAILQ_FOREACH(ifp, &V_ifnet, if_link) {
 		if (ifp->if_afdata[AF_INET6] == NULL)
 			continue;
@@ -845,12 +847,14 @@
 			/*
 			 * We've been generating a random ID on this interface.
 			 * Create a new one.
+			 *
+			 * XXX no synchronization for ndi->randomid
 			 */
 			(void)generate_tmp_ifid(ndi->randomseed0,
 			    ndi->randomseed1, ndi->randomid);
 		}
 	}
-
+	NET_EPOCH_EXIT(et);
 	CURVNET_RESTORE();
 }
 
@@ -887,7 +891,7 @@
 {
 
 	/* Timer for regeneranation of temporary addresses randomize ID. */
-	callout_init(&V_in6_tmpaddrtimer_ch, 0);
+	callout_init(&V_in6_tmpaddrtimer_ch, 1);
 	callout_reset(&V_in6_tmpaddrtimer_ch,
 	    (V_ip6_temp_preferred_lifetime - V_ip6_desync_factor -
 	    V_ip6_temp_regen_advance) * hz,
Index: sys/netinet6/nd6.c
===================================================================
--- sys/netinet6/nd6.c
+++ sys/netinet6/nd6.c
@@ -225,11 +225,11 @@
 	nd6_defrouter_init();
 
 	/* Start timers. */
-	callout_init(&V_nd6_slowtimo_ch, 0);
+	callout_init(&V_nd6_slowtimo_ch, 1);
 	callout_reset(&V_nd6_slowtimo_ch, ND6_SLOWTIMER_INTERVAL * hz,
 	    nd6_slowtimo, curvnet);
 
-	callout_init(&V_nd6_timer_ch, 0);
+	callout_init(&V_nd6_timer_ch, 1);
 	callout_reset(&V_nd6_timer_ch, hz, nd6_timer, curvnet);
 
 	nd6_dad_init();