--- src/sys/net/rtsock.c	2018-11-01 21:20:47.771400000 -0200
+++ src/sys/net/rtsock.c	2018-11-24 10:31:43.951772000 -0200
@@ -1567,7 +1567,9 @@ sysctl_dumpentry(struct radix_node *rn, void *vw)
 	    rt_mask(rt), &ss);
 	info.rti_info[RTAX_GENMASK] = 0;
 	if (rt->rt_ifp) {
+		/* panics system at reference to rt->rt_ifp->if_addr sometimes is invalid and not null
 		info.rti_info[RTAX_IFP] = rt->rt_ifp->if_addr->ifa_addr;
+		*/
 		info.rti_info[RTAX_IFA] = rt->rt_ifa->ifa_addr;
 		if (rt->rt_ifp->if_flags & IFF_POINTOPOINT)
 			info.rti_info[RTAX_BRD] = rt->rt_ifa->ifa_dstaddr;