--- 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;