D30398.1794413628.diff
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	diff --git a/sys/contrib/ipfilter/netinet/ip_fil_freebsd.c b/sys/contrib/ipfilter/netinet/ip_fil_freebsd.c
	--- a/sys/contrib/ipfilter/netinet/ip_fil_freebsd.c
	+++ b/sys/contrib/ipfilter/netinet/ip_fil_freebsd.c
	@@ -689,7 +689,9 @@
	register struct mbuf m = mpp;
	int len, off, error = 0, hlen, code;
	struct ifnet ifp, sifp;
	- struct sockaddr_in dst;
	+ struct route ro;
	+ struct sockaddr_in *dst;
	+ const struct sockaddr *gw;
	struct nhop_object *nh;
	u_long fibnum = 0;
	u_short ip_off;
	@@ -739,10 +741,12 @@
	/*
	* Route packet.
	*/
	- bzero(&dst, sizeof (dst));
	- dst.sin_family = AF_INET;
	- dst.sin_addr = ip->ip_dst;
	- dst.sin_len = sizeof(dst);
	+ bzero(&ro, sizeof (ro));
	+ dst = (struct sockaddr_in *)&ro.ro_dst;
	+ dst->sin_family = AF_INET;
	+ dst->sin_addr = ip->ip_dst;
	+ dst->sin_len = sizeof(dst);
	+ gw = (const struct sockaddr *)dst;

	fr = fin->fin_fr;
	if ((fr != NULL) && !(fr->fr_flags & FR_KEEPSTATE) && (fdp != NULL) &&
	@@ -762,11 +766,11 @@
	}

	if ((fdp != NULL) && (fdp->fd_ip.s_addr != 0))
	- dst.sin_addr = fdp->fd_ip;
	+ dst->sin_addr = fdp->fd_ip;

	fibnum = M_GETFIB(m0);
	NET_EPOCH_ASSERT();
	- nh = fib4_lookup(fibnum, dst.sin_addr, 0, NHR_NONE, 0);
	+ nh = fib4_lookup(fibnum, dst->sin_addr, 0, NHR_NONE, 0);
	if (nh == NULL) {
	if (in_localaddr(ip->ip_dst))
	error = EHOSTUNREACH;
	@@ -777,8 +781,10 @@

	if (ifp == NULL)
	ifp = nh->nh_ifp;
	- if (nh->nh_flags & NHF_GATEWAY)
	- dst.sin_addr = nh->gw4_sa.sin_addr;
	+ if (nh->nh_flags & NHF_GATEWAY) {
	+ gw = &nh->gw_sa;
	+ ro.ro_flags \|= RT_HAS_GW;
	+ }

	/*
	* For input packets which are being "fastrouted", they won't
	@@ -822,9 +828,7 @@
	if (ntohs(ip->ip_len) <= ifp->if_mtu) {
	if (!ip->ip_sum)
	ip->ip_sum = in_cksum(m, hlen);
	- error = (ifp->if_output)(ifp, m, (struct sockaddr )&dst,
	- NULL
	- );
	+ error = (*ifp->if_output)(ifp, m, gw, &ro);
	goto done;
	}
	/*
	@@ -904,10 +908,7 @@
	m0 = m->m_act;
	m->m_act = 0;
	if (error == 0)
	- error = (*ifp->if_output)(ifp, m,
	- (struct sockaddr *)&dst,
	- NULL
	- );
	+ error = (*ifp->if_output)(ifp, m, gw, &ro);
	else
	FREE_MB_T(m);
	}
	diff --git a/sys/dev/cxgbe/tom/t4_listen.c b/sys/dev/cxgbe/tom/t4_listen.c
	--- a/sys/dev/cxgbe/tom/t4_listen.c
	+++ b/sys/dev/cxgbe/tom/t4_listen.c
	@@ -1113,7 +1113,14 @@
	if (nh->nh_ifp != ifp)
	return (NULL);
	if (nh->nh_flags & NHF_GATEWAY)
	- ((struct sockaddr_in *)dst)->sin_addr = nh->gw4_sa.sin_addr;
	+ if (nh->gw_sa.sa_family == AF_INET)
	+ ((struct sockaddr_in *)dst)->sin_addr = nh->gw4_sa.sin_addr;
	+ else {
	+ bzero(dst, sizeof(struct sockaddr_in6));
	+ dst->sa_len = sizeof(struct sockaddr_in6);
	+ dst->sa_family = AF_INET6;
	+ ((struct sockaddr_in6 *)dst)->sin6_addr = nh->gw6_sa.sin6_addr;
	+ }
	else
	((struct sockaddr_in *)dst)->sin_addr = inc->inc_faddr;
	}
	diff --git a/sys/dev/iicbus/if_ic.c b/sys/dev/iicbus/if_ic.c
	--- a/sys/dev/iicbus/if_ic.c
	+++ b/sys/dev/iicbus/if_ic.c
	@@ -372,7 +372,7 @@
	if (dst->sa_family == AF_UNSPEC)
	bcopy(dst->sa_data, &hdr, sizeof(hdr));
	else
	- hdr = dst->sa_family;
	+ hdr = RO_GET_FAMILY(ro, dst);

	mtx_lock(&sc->ic_lock);
	ifp->if_drv_flags \|= IFF_DRV_RUNNING;
	diff --git a/sys/net/debugnet.c b/sys/net/debugnet.c
	--- a/sys/net/debugnet.c
	+++ b/sys/net/debugnet.c
	@@ -673,6 +673,7 @@
	goto cleanup;
	}

	+ /* TODO support AF_INET6 */
	if (nh->gw_sa.sa_family == AF_INET)
	gw_sin = &nh->gw4_sa;
	else {
	diff --git a/sys/net/if_disc.c b/sys/net/if_disc.c
	--- a/sys/net/if_disc.c
	+++ b/sys/net/if_disc.c
	@@ -185,7 +185,7 @@
	if (dst->sa_family == AF_UNSPEC)
	bcopy(dst->sa_data, &af, sizeof(af));
	else
	- af = dst->sa_family;
	+ af = RO_GET_FAMILY(ro, dst);

	if (bpf_peers_present(ifp->if_bpf))
	bpf_mtap2(ifp->if_bpf, &af, sizeof(af), m);
	diff --git a/sys/net/if_ethersubr.c b/sys/net/if_ethersubr.c
	--- a/sys/net/if_ethersubr.c
	+++ b/sys/net/if_ethersubr.c
	@@ -237,7 +237,7 @@
	case AF_INET6:
	if ((m->m_flags & M_MCAST) == 0)
	error = nd6_resolve(ifp, 0, m, dst, phdr, &lleflags,
	- plle);
	+ plle, ro);
	else {
	const struct in6_addr *a6;
	a6 = &(((const struct sockaddr_in6 *)dst)->sin6_addr);
	@@ -289,6 +289,7 @@
	uint32_t pflags;
	struct llentry *lle = NULL;
	int addref = 0;
	+ int af = RO_GET_FAMILY(ro, dst);

	phdr = NULL;
	pflags = 0;
	@@ -352,7 +353,7 @@

	if ((pflags & RT_L2_ME) != 0) {
	update_mbuf_csumflags(m, m);
	- return (if_simloop(ifp, m, dst->sa_family, 0));
	+ return (if_simloop(ifp, m, af, 0));
	}
	loop_copy = (pflags & RT_MAY_LOOP) != 0;

	@@ -370,6 +371,19 @@
	if ((pflags & RT_HAS_HEADER) == 0) {
	eh = mtod(m, struct ether_header *);
	memcpy(eh, phdr, hlen);
	+#if defined(INET) && defined(INET6)
	+ /* XXX phdr might be from lle cache, let's fix the ether_type */
	+ /* FIXME maybe we can cache phdr in route ??? */
	+ if (dst->sa_family != af) {
	+ uint16_t etype = 0;
	+ if (af == AF_INET)
	+ etype = htons(ETHERTYPE_IP);
	+ else if (af == AF_INET6)
	+ etype = htons(ETHERTYPE_IPV6);
	+ if (etype != 0)
	+ memcpy(&eh->ether_type, &etype, sizeof(etype));
	+ }
	+#endif
	}

	/*
	@@ -399,7 +413,7 @@
	*/
	if ((n = m_dup(m, M_NOWAIT)) != NULL) {
	update_mbuf_csumflags(m, n);
	- (void)if_simloop(ifp, n, dst->sa_family, hlen);
	+ (void)if_simloop(ifp, n, af, hlen);
	} else
	if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
	}
	diff --git a/sys/net/if_fwsubr.c b/sys/net/if_fwsubr.c
	--- a/sys/net/if_fwsubr.c
	+++ b/sys/net/if_fwsubr.c
	@@ -94,6 +94,7 @@
	#if defined(INET) \|\| defined(INET6)
	int is_gw = 0;
	#endif
	+ int af = RO_GET_FAMILY(ro, dst);

	#ifdef MAC
	error = mac_ifnet_check_transmit(ifp, m);
	@@ -137,6 +138,26 @@
	destfw = NULL;
	}

	+ switch (af) {
	+#ifdef INET
	+ case AF_INET:
	+ type = ETHERTYPE_IP;
	+ break;
	+ case AF_ARP:
	+ type = ETHERTYPE_ARP;
	+ break;
	+#endif
	+#ifdef INET6
	+ case AF_INET6:
	+ type = ETHERTYPE_IPV6;
	+ break;
	+#endif
	+ default:
	+ if_printf(ifp, "can't handle af%d\n", af);
	+ error = EAFNOSUPPORT;
	+ goto bad;
	+ }
	+
	switch (dst->sa_family) {
	#ifdef INET
	case AF_INET:
	@@ -151,7 +172,6 @@
	if (error)
	return (error == EWOULDBLOCK ? 0 : error);
	}
	- type = ETHERTYPE_IP;
	break;

	case AF_ARP:
	@@ -159,7 +179,6 @@
	struct arphdr *ah;
	ah = mtod(m, struct arphdr *);
	ah->ar_hrd = htons(ARPHRD_IEEE1394);
	- type = ETHERTYPE_ARP;
	if (unicast)
	destfw = (struct fw_hwaddr *) ar_tha(ah);

	@@ -177,11 +196,10 @@
	case AF_INET6:
	if (unicast) {
	error = nd6_resolve(fc->fc_ifp, is_gw, m, dst,
	- (u_char *) destfw, NULL, NULL);
	+ (u_char *) destfw, NULL, NULL, ro);
	if (error)
	return (error == EWOULDBLOCK ? 0 : error);
	}
	- type = ETHERTYPE_IPV6;
	break;
	#endif

	diff --git a/sys/net/if_gif.c b/sys/net/if_gif.c
	--- a/sys/net/if_gif.c
	+++ b/sys/net/if_gif.c
	@@ -409,7 +409,7 @@
	if (dst->sa_family == AF_UNSPEC)
	bcopy(dst->sa_data, &af, sizeof(af));
	else
	- af = dst->sa_family;
	+ af = RO_GET_FAMILY(ro, dst);
	/*
	* Now save the af in the inbound pkt csum data, this is a cheat since
	* we are using the inbound csum_data field to carry the af over to
	diff --git a/sys/net/if_gre.c b/sys/net/if_gre.c
	--- a/sys/net/if_gre.c
	+++ b/sys/net/if_gre.c
	@@ -613,7 +613,7 @@
	if (dst->sa_family == AF_UNSPEC)
	bcopy(dst->sa_data, &af, sizeof(af));
	else
	- af = dst->sa_family;
	+ af = RO_GET_FAMILY(ro, dst);
	/*
	* Now save the af in the inbound pkt csum data, this is a cheat since
	* we are using the inbound csum_data field to carry the af over to
	diff --git a/sys/net/if_infiniband.c b/sys/net/if_infiniband.c
	--- a/sys/net/if_infiniband.c
	+++ b/sys/net/if_infiniband.c
	@@ -253,7 +253,7 @@
	#ifdef INET6
	case AF_INET6:
	if ((m->m_flags & M_MCAST) == 0) {
	- error = nd6_resolve(ifp, 0, m, dst, phdr, &lleflags, plle);
	+ error = nd6_resolve(ifp, 0, m, dst, phdr, &lleflags, plle, ro);
	} else {
	infiniband_ipv6_multicast_map(
	&((const struct sockaddr_in6 *)dst)->sin6_addr,
	@@ -300,6 +300,7 @@
	int hlen; /* link layer header length */
	uint32_t pflags;
	bool addref;
	+ int af = RO_GET_FAMILY(ro, dst);

	NET_EPOCH_ASSERT();

	@@ -370,7 +371,7 @@

	if ((pflags & RT_L2_ME) != 0) {
	update_mbuf_csumflags(m, m);
	- return (if_simloop(ifp, m, dst->sa_family, 0));
	+ return (if_simloop(ifp, m, af, 0));
	}

	/*
	@@ -385,6 +386,15 @@
	if ((pflags & RT_HAS_HEADER) == 0) {
	ih = mtod(m, struct infiniband_header *);
	memcpy(ih, phdr, hlen);
	+#if defined(INET) && defined(INET6)
	+ /* XXX phdr might be from lle cache, let's fix the ether_type */
	+ if (dst->sa_family != af) {
	+ if (af == AF_INET)
	+ ih->ib_protocol = htons(ETHERTYPE_IP);
	+ else if (af == AF_INET6)
	+ ih->ib_protocol = htons(ETHERTYPE_IPV6);
	+ }
	+#endif
	}

	/*
	diff --git a/sys/net/if_loop.c b/sys/net/if_loop.c
	--- a/sys/net/if_loop.c
	+++ b/sys/net/if_loop.c
	@@ -235,7 +235,7 @@
	if (dst->sa_family == AF_UNSPEC \|\| dst->sa_family == pseudo_AF_HDRCMPLT)
	bcopy(dst->sa_data, &af, sizeof(af));
	else
	- af = dst->sa_family;
	+ af = RO_GET_FAMILY(ro, dst);

	#if 1 /* XXX */
	switch (af) {
	diff --git a/sys/net/if_me.c b/sys/net/if_me.c
	--- a/sys/net/if_me.c
	+++ b/sys/net/if_me.c
	@@ -533,14 +533,14 @@

	static int
	me_output(struct ifnet ifp, struct mbuf m, const struct sockaddr *dst,
	- struct route *ro __unused)
	+ struct route *ro)
	{
	uint32_t af;

	if (dst->sa_family == AF_UNSPEC)
	bcopy(dst->sa_data, &af, sizeof(af));
	else
	- af = dst->sa_family;
	+ af = RO_GET_FAMILY(ro, dst);
	m->m_pkthdr.csum_data = af;
	return (ifp->if_transmit(ifp, m));
	}
	diff --git a/sys/net/if_spppsubr.c b/sys/net/if_spppsubr.c
	--- a/sys/net/if_spppsubr.c
	+++ b/sys/net/if_spppsubr.c
	@@ -780,6 +780,7 @@
	int ipproto = PPP_IP;
	#endif
	int debug = ifp->if_flags & IFF_DEBUG;
	+ int af = RO_GET_FAMILY(ro, dst);

	SPPP_LOCK(sp);

	@@ -805,7 +806,7 @@
	* dialout event in case IPv6 has been
	* administratively disabled on that interface.
	*/
	- if (dst->sa_family == AF_INET6 &&
	+ if (af == AF_INET6 &&
	!(sp->confflags & CONF_ENABLE_IPV6))
	goto drop;
	#endif
	@@ -818,7 +819,7 @@
	}

	#ifdef INET
	- if (dst->sa_family == AF_INET) {
	+ if (af == AF_INET) {
	/* XXX Check mbuf length here? */
	struct ip ip = mtod (m, struct ip);
	struct tcphdr tcp = (struct tcphdr) ((long*)ip + ip->ip_hl);
	@@ -888,14 +889,14 @@
	#endif

	#ifdef INET6
	- if (dst->sa_family == AF_INET6) {
	+ if (af == AF_INET6) {
	/* XXX do something tricky here? */
	}
	#endif

	if (sp->pp_mode == PP_FR) {
	/* Add frame relay header. */
	- m = sppp_fr_header (sp, m, dst->sa_family);
	+ m = sppp_fr_header (sp, m, af);
	if (! m)
	goto nobufs;
	goto out;
	@@ -926,7 +927,7 @@
	h->control = PPP_UI; /* Unnumbered Info */
	}

	- switch (dst->sa_family) {
	+ switch (af) {
	#ifdef INET
	case AF_INET: /* Internet Protocol */
	if (sp->pp_mode == IFF_CISCO)
	diff --git a/sys/net/if_stf.c b/sys/net/if_stf.c
	--- a/sys/net/if_stf.c
	+++ b/sys/net/if_stf.c
	@@ -427,6 +427,7 @@
	#endif

	sc = ifp->if_softc;
	+ /* FIXME possible sockaddr_in gw ? */
	dst6 = (const struct sockaddr_in6 *)dst;

	/* just in case */
	diff --git a/sys/net/if_tuntap.c b/sys/net/if_tuntap.c
	--- a/sys/net/if_tuntap.c
	+++ b/sys/net/if_tuntap.c
	@@ -1401,8 +1401,9 @@
	/* BPF writes need to be handled specially. */
	if (dst->sa_family == AF_UNSPEC)
	bcopy(dst->sa_data, &af, sizeof(af));
	+ /* FIXME TUN is p-t-p device */
	else
	- af = dst->sa_family;
	+ af = RO_GET_FAMILY(ro, dst);

	if (bpf_peers_present(ifp->if_bpf))
	bpf_mtap2(ifp->if_bpf, &af, sizeof(af), m0);
	diff --git a/sys/net/route.h b/sys/net/route.h
	--- a/sys/net/route.h
	+++ b/sys/net/route.h
	@@ -394,6 +394,10 @@
	} \
	} while (0)

	+#define RO_GET_FAMILY(ro, dst) ((ro) != NULL && \
	+ (ro)->ro_flags & RT_HAS_GW \
	+ ? (ro)->ro_dst.sa_family : (dst)->sa_family)
	+
	/*
	* Validate a cached route based on a supplied cookie. If there is an
	* out-of-date cache, simply free it. Update the generation number
	diff --git a/sys/net/route/route_ctl.c b/sys/net/route/route_ctl.c
	--- a/sys/net/route/route_ctl.c
	+++ b/sys/net/route/route_ctl.c
	@@ -106,6 +106,20 @@
	&VNET_NAME(rib_route_multipath), 0, "Enable route multipath");
	#undef _MP_FLAGS

	+#if defined(INET) && defined(INET6)
	+/*
	+#define V_rib_route_ipv4_nexthop VNET(rib_route_ipv4_nexthop)
	+VNET_DEFINE(u_int, rib_route_ipv4_nexthop) = 1;
	+SYSCTL_UINT(_net_route, OID_AUTO, ipv4_nexthop, CTLFLAG_RW \| CTLFLAG_VNET,
	+ &VNET_NAME(rib_route_ipv4_nexthop), 0, "Enable IPv6 route via IPv4 Next Hop address");
	+*/
	+
	+#define V_rib_route_ipv6_nexthop VNET(rib_route_ipv6_nexthop)
	+VNET_DEFINE(u_int, rib_route_ipv6_nexthop) = 1;
	+SYSCTL_UINT(_net_route, OID_AUTO, ipv6_nexthop, CTLFLAG_RW \| CTLFLAG_VNET,
	+ &VNET_NAME(rib_route_ipv6_nexthop), 0, "Enable IPv4 route via IPv6 Next Hop address");
	+#endif
	+
	/* Routing table UMA zone */
	VNET_DEFINE_STATIC(uma_zone_t, rtzone);
	#define V_rtzone VNET(rtzone)
	@@ -197,6 +211,34 @@
	return (rnh);
	}

	+#if defined(INET) && defined(INET6)
	+/*
	+static bool
	+rib_can_ipv4_nexthop_address(struct rib_head *rh)
	+{
	+ int result;
	+
	+ CURVNET_SET(rh->rib_vnet);
	+ result = !!V_rib_route_ipv4_nexthop;
	+ CURVNET_RESTORE();
	+
	+ return (result);
	+}
	+*/
	+
	+static bool
	+rib_can_ipv6_nexthop_address(struct rib_head *rh)
	+{
	+ int result;
	+
	+ CURVNET_SET(rh->rib_vnet);
	+ result = !!V_rib_route_ipv6_nexthop;
	+ CURVNET_RESTORE();
	+
	+ return (result);
	+}
	+#endif
	+
	#ifdef ROUTE_MPATH
	static bool
	rib_can_multipath(struct rib_head *rh)
	@@ -567,6 +609,35 @@
	return (error);
	}

	+/*
	+ * Checks if @dst and @gateway is valid combination.
	+ *
	+ * Returns true if is valid, false otherwise.
	+ */
	+static bool
	+gateway_is_valid(struct rib_head rnh, struct sockaddr dst,
	+ struct sockaddr *gateway)
	+{
	+ if (dst->sa_family == gateway->sa_family)
	+ return (true);
	+ else if (gateway->sa_family == AF_UNSPEC)
	+ return (true);
	+ else if (gateway->sa_family == AF_LINK)
	+ return (true);
	+#if defined(INET) && defined(INET6)
	+ else if (dst->sa_family == AF_INET && gateway->sa_family == AF_INET6 &&
	+ rib_can_ipv6_nexthop_address(rnh))
	+ return (true);
	+ /*
	+ else if (dst->sa_family == AF_INET6 && gateway->sa_family == AF_INET &&
	+ rib_can_ipv4_nexthop_address(rnh))
	+ return (true);
	+ */
	+#endif
	+ else
	+ return (false);
	+}
	+
	/*
	* Creates rtentry and nexthop based on @info data.
	* Return 0 and fills in rtentry into @prt on success,
	@@ -589,8 +660,7 @@

	if ((flags & RTF_GATEWAY) && !gateway)
	return (EINVAL);
	- if (dst && gateway && (dst->sa_family != gateway->sa_family) &&
	- (gateway->sa_family != AF_UNSPEC) && (gateway->sa_family != AF_LINK))
	+ if (dst && gateway && !gateway_is_valid(rnh, dst, gateway))
	return (EINVAL);

	if (dst->sa_len > sizeof(((struct rtentry *)NULL)->rt_dstb))
	diff --git a/sys/netgraph/netflow/netflow.c b/sys/netgraph/netflow/netflow.c
	--- a/sys/netgraph/netflow/netflow.c
	+++ b/sys/netgraph/netflow/netflow.c
	@@ -364,6 +364,7 @@
	fle->f.fle_o_ifx = nh->nh_ifp->if_index;
	if (nh->gw_sa.sa_family == AF_INET)
	fle->f.next_hop = nh->gw4_sa.sin_addr;
	+ /* FIXME else nh->gw_sa.sa_family == AF_INET6 ? */
	fle->f.dst_mask = plen;
	}
	}
	diff --git a/sys/netgraph/ng_iface.c b/sys/netgraph/ng_iface.c
	--- a/sys/netgraph/ng_iface.c
	+++ b/sys/netgraph/ng_iface.c
	@@ -371,7 +371,7 @@
	if (dst->sa_family == AF_UNSPEC)
	bcopy(dst->sa_data, &af, sizeof(af));
	else
	- af = dst->sa_family;
	+ af = RO_GET_FAMILY(ro, dst);

	/* Berkeley packet filter */
	ng_iface_bpftap(ifp, m, af);
	diff --git a/sys/netinet/ip_fastfwd.c b/sys/netinet/ip_fastfwd.c
	--- a/sys/netinet/ip_fastfwd.c
	+++ b/sys/netinet/ip_fastfwd.c
	@@ -199,7 +199,9 @@
	struct ip *ip;
	struct mbuf *m0 = NULL;
	struct nhop_object *nh = NULL;
	- struct sockaddr_in dst;
	+ struct route ro;
	+ struct sockaddr_in *dst;
	+ const struct sockaddr *gw;
	struct in_addr dest, odest, rtdest;
	uint16_t ip_len, ip_off;
	int error = 0;
	@@ -421,19 +423,23 @@
	ip_len = ntohs(ip->ip_len);
	ip_off = ntohs(ip->ip_off);

	- bzero(&dst, sizeof(dst));
	- dst.sin_family = AF_INET;
	- dst.sin_len = sizeof(dst);
	- if (nh->nh_flags & NHF_GATEWAY)
	- dst.sin_addr = nh->gw4_sa.sin_addr;
	- else
	- dst.sin_addr = dest;
	+ bzero(&ro, sizeof(ro));
	+ dst = (struct sockaddr_in *)&ro.ro_dst;
	+ dst->sin_family = AF_INET;
	+ dst->sin_len = sizeof(*dst);
	+ dst->sin_addr = dest;
	+ if (nh->nh_flags & NHF_GATEWAY) {
	+ gw = &nh->gw_sa;
	+ ro.ro_flags \|= RT_HAS_GW;
	+ } else
	+ gw = (const struct sockaddr *)dst;

	/*
	* Handle redirect case.
	*/
	redest.s_addr = 0;
	- if (V_ipsendredirects && (nh->nh_ifp == m->m_pkthdr.rcvif))
	+ if (V_ipsendredirects && (nh->nh_ifp == m->m_pkthdr.rcvif) &&
	+ gw->sa_family == AF_INET)
	mcopy = ip_redir_alloc(m, nh, ip, &redest.s_addr);

	/*
	@@ -448,8 +454,7 @@
	* Send off the packet via outgoing interface
	*/
	IP_PROBE(send, NULL, NULL, ip, nh->nh_ifp, ip, NULL);
	- error = (*nh->nh_ifp->if_output)(nh->nh_ifp, m,
	- (struct sockaddr *)&dst, NULL);
	+ error = (*nh->nh_ifp->if_output)(nh->nh_ifp, m, gw, &ro);
	} else {
	/*
	* Handle EMSGSIZE with icmp reply needfrag for TCP MTU discovery
	@@ -484,7 +489,7 @@
	mtod(m, struct ip *), nh->nh_ifp,
	mtod(m, struct ip *), NULL);
	error = (*nh->nh_ifp->if_output)(nh->nh_ifp, m,
	- (struct sockaddr *)&dst, NULL);
	+ gw, &ro);
	if (error)
	break;
	} while ((m = m0) != NULL);
	diff --git a/sys/netinet/ip_input.c b/sys/netinet/ip_input.c
	--- a/sys/netinet/ip_input.c
	+++ b/sys/netinet/ip_input.c
	@@ -1065,13 +1065,16 @@

	if (nh_ia != NULL &&
	(src & nh_ia->ia_subnetmask) == nh_ia->ia_subnet) {
	- if (nh->nh_flags & NHF_GATEWAY)
	- dest.s_addr = nh->gw4_sa.sin_addr.s_addr;
	- else
	- dest.s_addr = ip->ip_dst.s_addr;
	/* Router requirements says to only send host redirects */
	type = ICMP_REDIRECT;
	code = ICMP_REDIRECT_HOST;
	+ if (nh->nh_flags & NHF_GATEWAY) {
	+ if (nh->gw_sa.sa_family == AF_INET)
	+ dest.s_addr = nh->gw4_sa.sin_addr.s_addr;
	+ else /* Do not redirect in case gw is AF_INET6 */
	+ type = 0;
	+ } else
	+ dest.s_addr = ip->ip_dst.s_addr;
	}
	}
	}
	diff --git a/sys/netinet/ip_output.c b/sys/netinet/ip_output.c
	--- a/sys/netinet/ip_output.c
	+++ b/sys/netinet/ip_output.c
	@@ -212,7 +212,7 @@

	static int
	ip_output_send(struct inpcb inp, struct ifnet ifp, struct mbuf *m,
	- const struct sockaddr_in gw, struct route ro, bool stamp_tag)
	+ const struct sockaddr gw, struct route ro, bool stamp_tag)
	{
	#ifdef KERN_TLS
	struct ktls_session *tls = NULL;
	@@ -273,7 +273,7 @@
	m->m_pkthdr.csum_flags \|= CSUM_SND_TAG;
	}

	- error = (ifp->if_output)(ifp, m, (const struct sockaddr )gw, ro);
	+ error = (*ifp->if_output)(ifp, m, gw, ro);

	done:
	/* Check for route change invalidating send tags. */
	@@ -293,9 +293,9 @@

	/* rte<>ro_flags translation */
	static inline void
	-rt_update_ro_flags(struct route *ro)
	+rt_update_ro_flags(struct route ro, struct nhop_object nh)
	{
	- int nh_flags = ro->ro_nh->nh_flags;
	+ int nh_flags = nh->nh_flags;

	ro->ro_flags &= ~ (RT_REJECT\|RT_BLACKHOLE\|RT_HAS_GW);

	@@ -329,12 +329,13 @@
	int mtu = 0;
	int error = 0;
	int vlan_pcp = -1;
	- struct sockaddr_in *dst, sin;
	- const struct sockaddr_in *gw;
	+ struct sockaddr_in *dst;
	+ const struct sockaddr *gw;
	struct in_ifaddr *ia = NULL;
	struct in_addr src;
	int isbroadcast;
	uint16_t ip_len, ip_off;
	+ struct route iproute;
	uint32_t fibnum;
	#if defined(IPSEC) \|\| defined(IPSEC_SUPPORT)
	int no_route_but_check_spd = 0;
	@@ -386,23 +387,23 @@
	* therefore we need restore gw if we're redoing lookup.
	*/
	fibnum = (inp != NULL) ? inp->inp_inc.inc_fibnum : M_GETFIB(m);
	- if (ro != NULL)
	- dst = (struct sockaddr_in *)&ro->ro_dst;
	- else
	- dst = &sin;
	- if (ro == NULL \|\| ro->ro_nh == NULL) {
	- bzero(dst, sizeof(*dst));
	+ if (ro == NULL) {
	+ ro = &iproute;
	+ bzero(ro, sizeof (*ro));
	+ }
	+ dst = (struct sockaddr_in *)&ro->ro_dst;
	+ if (ro->ro_nh == NULL) {
	dst->sin_family = AF_INET;
	dst->sin_len = sizeof(*dst);
	dst->sin_addr = ip->ip_dst;
	}
	- gw = dst;
	+ gw = (const struct sockaddr *)dst;
	again:
	/*
	* Validate route against routing table additions;
	* a better/more specific route might have been added.
	*/
	- if (inp != NULL && ro != NULL && ro->ro_nh != NULL)
	+ if (inp != NULL && ro->ro_nh != NULL)
	NH_VALIDATE(ro, &inp->inp_rt_cookie, fibnum);
	/*
	* If there is a cached route,
	@@ -412,7 +413,7 @@
	* cache with IPv6.
	* Also check whether routing cache needs invalidation.
	*/
	- if (ro != NULL && ro->ro_nh != NULL &&
	+ if (ro->ro_nh != NULL &&
	((!NH_IS_VALID(ro->ro_nh)) \|\| dst->sin_family != AF_INET \|\|
	dst->sin_addr.s_addr != ip->ip_dst.s_addr))
	RO_INVALIDATE_CACHE(ro);
	@@ -469,7 +470,7 @@
	src = IA_SIN(ia)->sin_addr;
	else
	src.s_addr = INADDR_ANY;
	- } else if (ro != NULL) {
	+ } else if (ro != &iproute) {
	if (ro->ro_nh == NULL) {
	/*
	* We want to do any cloning requested by the link
	@@ -498,13 +499,13 @@
	ia = ifatoia(ro->ro_nh->nh_ifa);
	ifp = ro->ro_nh->nh_ifp;
	counter_u64_add(ro->ro_nh->nh_pksent, 1);
	- rt_update_ro_flags(ro);
	+ rt_update_ro_flags(ro, ro->ro_nh);
	if (ro->ro_nh->nh_flags & NHF_GATEWAY)
	- gw = &ro->ro_nh->gw4_sa;
	+ gw = &ro->ro_nh->gw_sa;
	if (ro->ro_nh->nh_flags & NHF_HOST)
	isbroadcast = (ro->ro_nh->nh_flags & NHF_BROADCAST);
	- else if (ifp->if_flags & IFF_BROADCAST)
	- isbroadcast = in_ifaddr_broadcast(gw->sin_addr, ia);
	+ else if ((ifp->if_flags & IFF_BROADCAST) && (gw->sa_family == AF_INET))
	+ isbroadcast = in_ifaddr_broadcast(((const struct sockaddr_in *)gw)->sin_addr, ia);
	else
	isbroadcast = 0;
	if (ro->ro_nh->nh_flags & NHF_HOST)
	@@ -532,6 +533,7 @@
	}
	ifp = nh->nh_ifp;
	mtu = nh->nh_mtu;
	+ rt_update_ro_flags(ro, nh);
	/*
	* We are rewriting here dst to be gw actually, contradicting
	* comment at the beginning of the function. However, in this
	@@ -539,15 +541,15 @@
	* In case if pfil(9) sends us back to beginning of the
	* function, the dst would be rewritten by ip_output_pfil().
	*/
	- MPASS(dst == &sin);
	if (nh->nh_flags & NHF_GATEWAY)
	- dst->sin_addr = nh->gw4_sa.sin_addr;
	+ gw = &nh->gw_sa;
	ia = ifatoia(nh->nh_ifa);
	src = IA_SIN(ia)->sin_addr;
	isbroadcast = (((nh->nh_flags & (NHF_HOST \| NHF_BROADCAST)) ==
	(NHF_HOST \| NHF_BROADCAST)) \|\|
	((ifp->if_flags & IFF_BROADCAST) &&
	- in_ifaddr_broadcast(dst->sin_addr, ia)));
	+ (gw->sa_family == AF_INET) &&
	+ in_ifaddr_broadcast(((const struct sockaddr_in *)gw)->sin_addr, ia)));
	}

	/* Catch a possible divide by zero later. */
	@@ -562,7 +564,7 @@
	* still points to the address in "ro". (It may have been
	* changed to point to a gateway address, above.)
	*/
	- gw = dst;
	+ gw = (const struct sockaddr *)dst;
	/*
	* See if the caller provided any multicast options
	*/
	@@ -722,7 +724,7 @@
	RO_NHFREE(ro);
	ro->ro_prepend = NULL;
	}
	- gw = dst;
	+ gw = (const struct sockaddr *)dst;
	ip = mtod(m, struct ip *);
	goto again;
	}
	diff --git a/sys/netinet/toecore.c b/sys/netinet/toecore.c
	--- a/sys/netinet/toecore.c
	+++ b/sys/netinet/toecore.c
	@@ -483,7 +483,7 @@
	#endif
	#ifdef INET6
	case AF_INET6:
	- rc = nd6_resolve(ifp, 0, NULL, sa, lladdr, NULL, NULL);
	+ rc = nd6_resolve(ifp, 0, NULL, sa, lladdr, NULL, NULL, NULL);
	break;
	#endif
	default:
	diff --git a/sys/netinet6/nd6.h b/sys/netinet6/nd6.h
	--- a/sys/netinet6/nd6.h
	+++ b/sys/netinet6/nd6.h
	@@ -372,7 +372,8 @@
	int nd6_resolve_addr(struct ifnet ifp, int flags, const struct sockaddr dst,
	char desten, uint32_t pflags);
	int nd6_resolve(struct ifnet , int, struct mbuf ,
	- const struct sockaddr , u_char , uint32_t , struct llentry *);
	+ const struct sockaddr , u_char , uint32_t , struct llentry *,
	+ struct route *);
	int nd6_ioctl(u_long, caddr_t, struct ifnet *);
	void nd6_cache_lladdr(struct ifnet , struct in6_addr ,
	char *, int, int, int);
	diff --git a/sys/netinet6/nd6.c b/sys/netinet6/nd6.c
	--- a/sys/netinet6/nd6.c
	+++ b/sys/netinet6/nd6.c
	@@ -140,8 +140,11 @@
	static void nd6_llinfo_settimer_locked(struct llentry *, long);
	static void clear_llinfo_pqueue(struct llentry *);
	static int nd6_resolve_slow(struct ifnet , int, struct mbuf ,
	- const struct sockaddr_in6 , u_char , uint32_t , struct llentry *);
	+ const struct sockaddr_in6 , u_char , uint32_t , struct llentry *,
	+ struct route *);
	static int nd6_need_cache(struct ifnet *);
	+static int nd6_stash_route(struct mbuf , struct route );
	+static int output_ifp_one(struct ifnet , struct mbuf , struct sockaddr_in6 *);

	VNET_DEFINE_STATIC(struct callout, nd6_slowtimo_ch);
	#define V_nd6_slowtimo_ch VNET(nd6_slowtimo_ch)
	@@ -2215,7 +2218,7 @@
	int
	nd6_resolve(struct ifnet ifp, int is_gw, struct mbuf m,
	const struct sockaddr sa_dst, u_char desten, uint32_t *pflags,
	- struct llentry **plle)
	+ struct llentry *plle, struct route ro)
	{
	struct llentry *ln = NULL;
	const struct sockaddr_in6 *dst6;
	@@ -2270,7 +2273,7 @@
	} else if (plle && ln)
	LLE_WUNLOCK(ln);

	- return (nd6_resolve_slow(ifp, 0, m, dst6, desten, pflags, plle));
	+ return (nd6_resolve_slow(ifp, 0, m, dst6, desten, pflags, plle, ro));
	}

	/*
	@@ -2287,7 +2290,7 @@
	static __noinline int
	nd6_resolve_slow(struct ifnet ifp, int flags, struct mbuf m,
	const struct sockaddr_in6 dst, u_char desten, uint32_t *pflags,
	- struct llentry **plle)
	+ struct llentry *plle, struct route ro)
	{
	struct llentry lle = NULL, lle_tmp;
	struct in6_addr *psrc, src;
	@@ -2382,6 +2385,8 @@
	* packet queue in the mbuf. When it exceeds nd6_maxqueuelen,
	* the oldest packet in the queue will be removed.
	*/
	+ if (ro != NULL && nd6_stash_route(m, ro) != 0)
	+ goto sendns; /* FIXME return (ENOMEM) ??? */

	if (lle->la_hold != NULL) {
	struct mbuf *m_hold;
	@@ -2405,6 +2410,7 @@
	lle->la_hold = m;
	}

	+sendns:
	/*
	* If there has been no NS for the neighbor after entering the
	* INCOMPLETE state, send the first solicitation.
	@@ -2446,7 +2452,7 @@

	flags \|= LLE_ADDRONLY;
	error = nd6_resolve_slow(ifp, flags, NULL,
	- (const struct sockaddr_in6 *)dst, desten, pflags, NULL);
	+ (const struct sockaddr_in6 *)dst, desten, pflags, NULL, NULL);
	return (error);
	}

	@@ -2463,7 +2469,7 @@
	m = m_head;
	m_head = m_head->m_nextpkt;
	m->m_nextpkt = NULL;
	- error = nd6_output_ifp(ifp, ifp, m, dst, NULL);
	+ error = output_ifp_one(ifp, m, dst);
	}

	/*
	@@ -2473,6 +2479,46 @@
	return (error);
	}

	+#define MTAG_ND6_ROUTE 4237446679
	+
	+static int
	+nd6_stash_route(struct mbuf m, struct route ro)
	+{
	+ struct m_tag *mtag;
	+
	+ if ((ro->ro_flags & RT_HAS_GW) && ro->ro_dst.sa_family != AF_INET6) {
	+ mtag = m_tag_alloc(MTAG_ND6_ROUTE, 0, sizeof(struct route),
	+ M_NOWAIT);
	+ if (mtag == NULL)
	+ return ENOMEM;
	+ struct route ro1 = (struct route )(mtag + 1);
	+ bzero(ro1, sizeof(struct route));
	+ ro1->ro_flags = RT_HAS_GW; /* XXX only copy RT_HAS_GW flag */
	+ memcpy(&ro1->ro_dst, &ro->ro_dst, ro->ro_dst.sa_len);
	+ m_tag_prepend(m, mtag);
	+ }
	+
	+ return 0;
	+}
	+
	+static int
	+output_ifp_one(struct ifnet ifp, struct mbuf m, struct sockaddr_in6 *dst)
	+{
	+ int error;
	+ struct m_tag *mtag;
	+ struct route *ro;
	+
	+ mtag = m_tag_locate(m, MTAG_ND6_ROUTE, 0, NULL);
	+ if (mtag != NULL) {
	+ ro = (struct route *)(mtag + 1);
	+ error = (ifp->if_output)(ifp, m, (const struct sockaddr )dst,
	+ ro);
	+ } else
	+ error = nd6_output_ifp(ifp, ifp, m, dst, NULL);
	+
	+ return (error);
	+}
	+
	static int
	nd6_need_cache(struct ifnet *ifp)
	{
	diff --git a/sys/ofed/drivers/infiniband/core/ib_addr.c b/sys/ofed/drivers/infiniband/core/ib_addr.c
	--- a/sys/ofed/drivers/infiniband/core/ib_addr.c
	+++ b/sys/ofed/drivers/infiniband/core/ib_addr.c
	@@ -396,9 +396,23 @@
	} else {
	bool is_gw = (nh->nh_flags & NHF_GATEWAY) != 0;
	memset(edst, 0, MAX_ADDR_LEN);
	- error = arpresolve(ifp, is_gw, NULL, is_gw ?
	- &nh->gw_sa : (const struct sockaddr *)&dst_tmp,
	- edst, NULL, NULL);
	+#ifdef INET6
	+ if (is_gw && nh->gw_sa.sa_family == AF_INET6) {
	+ error = nd6_resolve(ifp, is_gw, NULL, &nh->gw_sa, edst,
	+ NULL, NULL, NULL);
	+ if (error == 0) {
	+ /* XXX fix ether type */
	+ struct ether_header *eh;
	+ uint16_t etype = htons(ETHERTYPE_IP);
	+ eh = (struct ether_header *)edst;
	+ memcpy(&eh->ether_type, &etype, sizeof(etype));
	+ }
	+ } else
	+#endif
	+ error = arpresolve(ifp, is_gw, NULL, is_gw ?
	+ &nh->gw_sa : (const struct sockaddr *)&dst_tmp,
	+ edst, NULL, NULL);
	+
	if (error != 0)
	goto error_put_ifp;
	else if (is_gw)
	@@ -586,7 +600,7 @@
	memset(edst, 0, MAX_ADDR_LEN);
	error = nd6_resolve(ifp, is_gw, NULL, is_gw ?
	&nh->gw_sa : (const struct sockaddr *)&dst_tmp,
	- edst, NULL, NULL);
	+ edst, NULL, NULL, NULL);
	if (error != 0)
	goto error_put_ifp;
	else if (is_gw)

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