Adding upstream version 9.1.upstream/9.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 3970 insertions, 0 deletions

diff --git a/bgpd/bgp_zebra.c b/bgpd/bgp_zebra.c
new file mode 100644
index 0000000..5b69de0
--- /dev/null
+++ b/bgpd/bgp_zebra.c
@@ -0,0 +1,3970 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* zebra client
+ * Copyright (C) 1997, 98, 99 Kunihiro Ishiguro
+ * Copyright (c) 2023 LabN Consulting, L.L.C.
+ */
+
+#include <zebra.h>
+
+#include "command.h"
+#include "stream.h"
+#include "network.h"
+#include "prefix.h"
+#include "log.h"
+#include "sockunion.h"
+#include "zclient.h"
+#include "routemap.h"
+#include "frrevent.h"
+#include "queue.h"
+#include "memory.h"
+#include "lib/json.h"
+#include "lib/bfd.h"
+#include "lib/route_opaque.h"
+#include "filter.h"
+#include "mpls.h"
+#include "vxlan.h"
+#include "pbr.h"
+
+#include "bgpd/bgpd.h"
+#include "bgpd/bgp_route.h"
+#include "bgpd/bgp_attr.h"
+#include "bgpd/bgp_aspath.h"
+#include "bgpd/bgp_nexthop.h"
+#include "bgpd/bgp_zebra.h"
+#include "bgpd/bgp_fsm.h"
+#include "bgpd/bgp_debug.h"
+#include "bgpd/bgp_errors.h"
+#include "bgpd/bgp_mpath.h"
+#include "bgpd/bgp_nexthop.h"
+#include "bgpd/bgp_nht.h"
+#include "bgpd/bgp_bfd.h"
+#include "bgpd/bgp_label.h"
+#ifdef ENABLE_BGP_VNC
+#include "bgpd/rfapi/rfapi_backend.h"
+#include "bgpd/rfapi/vnc_export_bgp.h"
+#endif
+#include "bgpd/bgp_evpn.h"
+#include "bgpd/bgp_mplsvpn.h"
+#include "bgpd/bgp_labelpool.h"
+#include "bgpd/bgp_pbr.h"
+#include "bgpd/bgp_evpn_private.h"
+#include "bgpd/bgp_evpn_mh.h"
+#include "bgpd/bgp_mac.h"
+#include "bgpd/bgp_trace.h"
+#include "bgpd/bgp_community.h"
+#include "bgpd/bgp_lcommunity.h"
+
+/* All information about zebra. */
+struct zclient *zclient = NULL;
+struct zclient *zclient_sync;
+static bool bgp_zebra_label_manager_connect(void);
+
+/* hook to indicate vrf status change for SNMP */
+DEFINE_HOOK(bgp_vrf_status_changed, (struct bgp *bgp, struct interface *ifp),
+	    (bgp, ifp));
+
+DEFINE_MTYPE_STATIC(BGPD, BGP_IF_INFO, "BGP interface context");
+
+/* Can we install into zebra? */
+static inline bool bgp_install_info_to_zebra(struct bgp *bgp)
+{
+	if (zclient->sock <= 0)
+		return false;
+
+	if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) {
+		zlog_debug(
+			"%s: No zebra instance to talk to, not installing information",
+			__func__);
+		return false;
+	}
+
+	return true;
+}
+
+int zclient_num_connects;
+
+/* Router-id update message from zebra. */
+static int bgp_router_id_update(ZAPI_CALLBACK_ARGS)
+{
+	struct prefix router_id;
+
+	zebra_router_id_update_read(zclient->ibuf, &router_id);
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("Rx Router Id update VRF %u Id %pFX", vrf_id,
+			   &router_id);
+
+	bgp_router_id_zebra_bump(vrf_id, &router_id);
+	return 0;
+}
+
+/* Nexthop update message from zebra. */
+static int bgp_read_nexthop_update(ZAPI_CALLBACK_ARGS)
+{
+	bgp_parse_nexthop_update(cmd, vrf_id);
+	return 0;
+}
+
+/* Set or clear interface on which unnumbered neighbor is configured. This
+ * would in turn cause BGP to initiate or turn off IPv6 RAs on this
+ * interface.
+ */
+static void bgp_update_interface_nbrs(struct bgp *bgp, struct interface *ifp,
+				      struct interface *upd_ifp)
+{
+	struct listnode *node, *nnode;
+	struct peer *peer;
+
+	for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) {
+		if (peer->conf_if && (strcmp(peer->conf_if, ifp->name) == 0)) {
+			if (upd_ifp) {
+				peer->ifp = upd_ifp;
+				bgp_zebra_initiate_radv(bgp, peer);
+			} else {
+				bgp_zebra_terminate_radv(bgp, peer);
+				peer->ifp = upd_ifp;
+			}
+		}
+	}
+}
+
+static int bgp_read_fec_update(ZAPI_CALLBACK_ARGS)
+{
+	bgp_parse_fec_update();
+	return 0;
+}
+
+static void bgp_start_interface_nbrs(struct bgp *bgp, struct interface *ifp)
+{
+	struct listnode *node, *nnode;
+	struct peer *peer;
+
+	for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) {
+		if (peer->conf_if && (strcmp(peer->conf_if, ifp->name) == 0) &&
+		    !peer_established(peer->connection)) {
+			if (peer_active(peer))
+				BGP_EVENT_ADD(peer->connection, BGP_Stop);
+			BGP_EVENT_ADD(peer->connection, BGP_Start);
+		}
+	}
+}
+
+static void bgp_nbr_connected_add(struct bgp *bgp, struct nbr_connected *ifc)
+{
+	struct listnode *node;
+	struct connected *connected;
+	struct interface *ifp;
+	struct prefix *p;
+
+	/* Kick-off the FSM for any relevant peers only if there is a
+	 * valid local address on the interface.
+	 */
+	ifp = ifc->ifp;
+	for (ALL_LIST_ELEMENTS_RO(ifp->connected, node, connected)) {
+		p = connected->address;
+		if (p->family == AF_INET6
+		    && IN6_IS_ADDR_LINKLOCAL(&p->u.prefix6))
+			break;
+	}
+	if (!connected)
+		return;
+
+	bgp_start_interface_nbrs(bgp, ifp);
+}
+
+static void bgp_nbr_connected_delete(struct bgp *bgp, struct nbr_connected *ifc,
+				     int del)
+{
+	struct listnode *node, *nnode;
+	struct peer *peer;
+	struct interface *ifp;
+
+	for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) {
+		if (peer->conf_if
+		    && (strcmp(peer->conf_if, ifc->ifp->name) == 0)) {
+			peer->last_reset = PEER_DOWN_NBR_ADDR_DEL;
+			BGP_EVENT_ADD(peer->connection, BGP_Stop);
+		}
+	}
+	/* Free neighbor also, if we're asked to. */
+	if (del) {
+		ifp = ifc->ifp;
+		listnode_delete(ifp->nbr_connected, ifc);
+		nbr_connected_free(ifc);
+	}
+}
+
+static int bgp_ifp_destroy(struct interface *ifp)
+{
+	struct bgp *bgp;
+
+	bgp = ifp->vrf->info;
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("Rx Intf del VRF %u IF %s", ifp->vrf->vrf_id,
+			   ifp->name);
+
+	if (bgp) {
+		bgp_update_interface_nbrs(bgp, ifp, NULL);
+		hook_call(bgp_vrf_status_changed, bgp, ifp);
+	}
+
+	bgp_mac_del_mac_entry(ifp);
+
+	return 0;
+}
+
+static int bgp_ifp_up(struct interface *ifp)
+{
+	struct connected *c;
+	struct nbr_connected *nc;
+	struct listnode *node, *nnode;
+	struct bgp *bgp;
+
+	bgp = ifp->vrf->info;
+
+	bgp_mac_add_mac_entry(ifp);
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("Rx Intf up VRF %u IF %s", ifp->vrf->vrf_id,
+			   ifp->name);
+
+	if (!bgp)
+		return 0;
+
+	for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, c))
+		bgp_connected_add(bgp, c);
+
+	for (ALL_LIST_ELEMENTS(ifp->nbr_connected, node, nnode, nc))
+		bgp_nbr_connected_add(bgp, nc);
+
+	hook_call(bgp_vrf_status_changed, bgp, ifp);
+	bgp_nht_ifp_up(ifp);
+
+	return 0;
+}
+
+static int bgp_ifp_down(struct interface *ifp)
+{
+	struct connected *c;
+	struct nbr_connected *nc;
+	struct listnode *node, *nnode;
+	struct bgp *bgp;
+	struct peer *peer;
+
+	bgp = ifp->vrf->info;
+
+	bgp_mac_del_mac_entry(ifp);
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("Rx Intf down VRF %u IF %s", ifp->vrf->vrf_id,
+			   ifp->name);
+
+	if (!bgp)
+		return 0;
+
+	for (ALL_LIST_ELEMENTS(ifp->connected, node, nnode, c))
+		bgp_connected_delete(bgp, c);
+
+	for (ALL_LIST_ELEMENTS(ifp->nbr_connected, node, nnode, nc))
+		bgp_nbr_connected_delete(bgp, nc, 1);
+
+	/* Fast external-failover */
+	if (!CHECK_FLAG(bgp->flags, BGP_FLAG_NO_FAST_EXT_FAILOVER)) {
+
+		for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) {
+			/* Take down directly connected peers. */
+			if ((peer->ttl != BGP_DEFAULT_TTL)
+			    && (peer->gtsm_hops != BGP_GTSM_HOPS_CONNECTED))
+				continue;
+
+			if (ifp == peer->nexthop.ifp) {
+				BGP_EVENT_ADD(peer->connection, BGP_Stop);
+				peer->last_reset = PEER_DOWN_IF_DOWN;
+			}
+		}
+	}
+
+	hook_call(bgp_vrf_status_changed, bgp, ifp);
+	bgp_nht_ifp_down(ifp);
+
+	return 0;
+}
+
+static int bgp_interface_address_add(ZAPI_CALLBACK_ARGS)
+{
+	struct connected *ifc;
+	struct bgp *bgp;
+	struct peer *peer;
+	struct prefix *addr;
+	struct listnode *node, *nnode;
+	afi_t afi;
+	safi_t safi;
+
+	bgp = bgp_lookup_by_vrf_id(vrf_id);
+
+	ifc = zebra_interface_address_read(cmd, zclient->ibuf, vrf_id);
+
+	if (ifc == NULL)
+		return 0;
+
+	if (bgp_debug_zebra(ifc->address))
+		zlog_debug("Rx Intf address add VRF %u IF %s addr %pFX", vrf_id,
+			   ifc->ifp->name, ifc->address);
+
+	if (!bgp)
+		return 0;
+
+	if (if_is_operative(ifc->ifp)) {
+		bgp_connected_add(bgp, ifc);
+
+		/* If we have learnt of any neighbors on this interface,
+		 * check to kick off any BGP interface-based neighbors,
+		 * but only if this is a link-local address.
+		 */
+		if (IN6_IS_ADDR_LINKLOCAL(&ifc->address->u.prefix6)
+		    && !list_isempty(ifc->ifp->nbr_connected))
+			bgp_start_interface_nbrs(bgp, ifc->ifp);
+		else {
+			addr = ifc->address;
+
+			for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) {
+				if (addr->family == AF_INET)
+					continue;
+
+				/*
+				 * If the Peer's interface name matches the
+				 * interface name for which BGP received the
+				 * update and if the received interface address
+				 * is a globalV6 and if the peer is currently
+				 * using a v4-mapped-v6 addr or a link local
+				 * address, then copy the Rxed global v6 addr
+				 * into peer's v6_global and send updates out
+				 * with new nexthop addr.
+				 */
+				if ((peer->conf_if &&
+				     (strcmp(peer->conf_if, ifc->ifp->name) ==
+				      0)) &&
+				    !IN6_IS_ADDR_LINKLOCAL(&addr->u.prefix6) &&
+				    ((IS_MAPPED_IPV6(
+					     &peer->nexthop.v6_global)) ||
+				     IN6_IS_ADDR_LINKLOCAL(
+					     &peer->nexthop.v6_global))) {
+
+					if (bgp_debug_zebra(ifc->address)) {
+						zlog_debug(
+							"Update peer %pBP's current intf addr %pI6 and send updates",
+							peer,
+							&peer->nexthop
+								 .v6_global);
+					}
+					memcpy(&peer->nexthop.v6_global,
+					       &addr->u.prefix6,
+					       IPV6_MAX_BYTELEN);
+					FOREACH_AFI_SAFI (afi, safi)
+						bgp_announce_route(peer, afi,
+								   safi, true);
+				}
+			}
+		}
+	}
+
+	return 0;
+}
+
+static int bgp_interface_address_delete(ZAPI_CALLBACK_ARGS)
+{
+	struct listnode *node, *nnode;
+	struct connected *ifc;
+	struct peer *peer;
+	struct bgp *bgp;
+	struct prefix *addr;
+
+	bgp = bgp_lookup_by_vrf_id(vrf_id);
+
+	ifc = zebra_interface_address_read(cmd, zclient->ibuf, vrf_id);
+
+	if (ifc == NULL)
+		return 0;
+
+	if (bgp_debug_zebra(ifc->address))
+		zlog_debug("Rx Intf address del VRF %u IF %s addr %pFX", vrf_id,
+			   ifc->ifp->name, ifc->address);
+
+	if (bgp && if_is_operative(ifc->ifp)) {
+		bgp_connected_delete(bgp, ifc);
+	}
+
+	addr = ifc->address;
+
+	if (bgp) {
+		/*
+		 * When we are using the v6 global as part of the peering
+		 * nexthops and we are removing it, then we need to
+		 * clear the peer data saved for that nexthop and
+		 * cause a re-announcement of the route.  Since
+		 * we do not want the peering to bounce.
+		 */
+		for (ALL_LIST_ELEMENTS(bgp->peer, node, nnode, peer)) {
+			afi_t afi;
+			safi_t safi;
+
+			if (addr->family == AF_INET)
+				continue;
+
+			if (!IN6_IS_ADDR_LINKLOCAL(&addr->u.prefix6)
+			    && memcmp(&peer->nexthop.v6_global,
+				      &addr->u.prefix6, 16)
+				       == 0) {
+				memset(&peer->nexthop.v6_global, 0, 16);
+				FOREACH_AFI_SAFI (afi, safi)
+					bgp_announce_route(peer, afi, safi,
+							   true);
+			}
+		}
+	}
+
+	connected_free(&ifc);
+
+	return 0;
+}
+
+static int bgp_interface_nbr_address_add(ZAPI_CALLBACK_ARGS)
+{
+	struct nbr_connected *ifc = NULL;
+	struct bgp *bgp;
+
+	ifc = zebra_interface_nbr_address_read(cmd, zclient->ibuf, vrf_id);
+
+	if (ifc == NULL)
+		return 0;
+
+	if (bgp_debug_zebra(ifc->address))
+		zlog_debug("Rx Intf neighbor add VRF %u IF %s addr %pFX",
+			   vrf_id, ifc->ifp->name, ifc->address);
+
+	if (if_is_operative(ifc->ifp)) {
+		bgp = bgp_lookup_by_vrf_id(vrf_id);
+		if (bgp)
+			bgp_nbr_connected_add(bgp, ifc);
+	}
+
+	return 0;
+}
+
+static int bgp_interface_nbr_address_delete(ZAPI_CALLBACK_ARGS)
+{
+	struct nbr_connected *ifc = NULL;
+	struct bgp *bgp;
+
+	ifc = zebra_interface_nbr_address_read(cmd, zclient->ibuf, vrf_id);
+
+	if (ifc == NULL)
+		return 0;
+
+	if (bgp_debug_zebra(ifc->address))
+		zlog_debug("Rx Intf neighbor del VRF %u IF %s addr %pFX",
+			   vrf_id, ifc->ifp->name, ifc->address);
+
+	if (if_is_operative(ifc->ifp)) {
+		bgp = bgp_lookup_by_vrf_id(vrf_id);
+		if (bgp)
+			bgp_nbr_connected_delete(bgp, ifc, 0);
+	}
+
+	nbr_connected_free(ifc);
+
+	return 0;
+}
+
+/* Zebra route add and delete treatment. */
+static int zebra_read_route(ZAPI_CALLBACK_ARGS)
+{
+	enum nexthop_types_t nhtype;
+	enum blackhole_type bhtype = BLACKHOLE_UNSPEC;
+	struct zapi_route api;
+	union g_addr nexthop = {};
+	ifindex_t ifindex;
+	int add, i;
+	struct bgp *bgp;
+
+	bgp = bgp_lookup_by_vrf_id(vrf_id);
+	if (!bgp)
+		return 0;
+
+	if (zapi_route_decode(zclient->ibuf, &api) < 0)
+		return -1;
+
+	/* we completely ignore srcdest routes for now. */
+	if (CHECK_FLAG(api.message, ZAPI_MESSAGE_SRCPFX))
+		return 0;
+
+	/* ignore link-local address. */
+	if (api.prefix.family == AF_INET6
+	    && IN6_IS_ADDR_LINKLOCAL(&api.prefix.u.prefix6))
+		return 0;
+
+	ifindex = api.nexthops[0].ifindex;
+	nhtype = api.nexthops[0].type;
+
+	/* api_nh structure has union of gate and bh_type */
+	if (nhtype == NEXTHOP_TYPE_BLACKHOLE) {
+		/* bh_type is only applicable if NEXTHOP_TYPE_BLACKHOLE*/
+		bhtype = api.nexthops[0].bh_type;
+	} else
+		nexthop = api.nexthops[0].gate;
+
+	add = (cmd == ZEBRA_REDISTRIBUTE_ROUTE_ADD);
+	if (add) {
+		/*
+		 * The ADD message is actually an UPDATE and there is no
+		 * explicit DEL
+		 * for a prior redistributed route, if any. So, perform an
+		 * implicit
+		 * DEL processing for the same redistributed route from any
+		 * other
+		 * source type.
+		 */
+		for (i = 0; i < ZEBRA_ROUTE_MAX; i++) {
+			if (i != api.type)
+				bgp_redistribute_delete(bgp, &api.prefix, i,
+							api.instance);
+		}
+
+		/* Now perform the add/update. */
+		bgp_redistribute_add(bgp, &api.prefix, &nexthop, ifindex,
+				     nhtype, bhtype, api.distance, api.metric,
+				     api.type, api.instance, api.tag);
+	} else {
+		bgp_redistribute_delete(bgp, &api.prefix, api.type,
+					api.instance);
+	}
+
+	if (bgp_debug_zebra(&api.prefix)) {
+		char buf[PREFIX_STRLEN];
+
+		if (add) {
+			inet_ntop(api.prefix.family, &nexthop, buf,
+				  sizeof(buf));
+			zlog_debug(
+				"Rx route ADD VRF %u %s[%d] %pFX nexthop %s (type %d if %u) metric %u distance %u tag %" ROUTE_TAG_PRI,
+				vrf_id, zebra_route_string(api.type),
+				api.instance, &api.prefix, buf, nhtype, ifindex,
+				api.metric, api.distance, api.tag);
+		} else {
+			zlog_debug("Rx route DEL VRF %u %s[%d] %pFX", vrf_id,
+				   zebra_route_string(api.type), api.instance,
+				   &api.prefix);
+		}
+	}
+
+	return 0;
+}
+
+struct interface *if_lookup_by_ipv4(struct in_addr *addr, vrf_id_t vrf_id)
+{
+	struct vrf *vrf;
+	struct listnode *cnode;
+	struct interface *ifp;
+	struct connected *connected;
+	struct prefix_ipv4 p;
+	struct prefix *cp;
+
+	vrf = vrf_lookup_by_id(vrf_id);
+	if (!vrf)
+		return NULL;
+
+	p.family = AF_INET;
+	p.prefix = *addr;
+	p.prefixlen = IPV4_MAX_BITLEN;
+
+	FOR_ALL_INTERFACES (vrf, ifp) {
+		for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) {
+			cp = connected->address;
+
+			if (cp->family == AF_INET)
+				if (prefix_match(cp, (struct prefix *)&p))
+					return ifp;
+		}
+	}
+	return NULL;
+}
+
+struct interface *if_lookup_by_ipv4_exact(struct in_addr *addr, vrf_id_t vrf_id)
+{
+	struct vrf *vrf;
+	struct listnode *cnode;
+	struct interface *ifp;
+	struct connected *connected;
+	struct prefix *cp;
+
+	vrf = vrf_lookup_by_id(vrf_id);
+	if (!vrf)
+		return NULL;
+
+	FOR_ALL_INTERFACES (vrf, ifp) {
+		for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) {
+			cp = connected->address;
+
+			if (cp->family == AF_INET)
+				if (IPV4_ADDR_SAME(&cp->u.prefix4, addr))
+					return ifp;
+		}
+	}
+	return NULL;
+}
+
+struct interface *if_lookup_by_ipv6(struct in6_addr *addr, ifindex_t ifindex,
+				    vrf_id_t vrf_id)
+{
+	struct vrf *vrf;
+	struct listnode *cnode;
+	struct interface *ifp;
+	struct connected *connected;
+	struct prefix_ipv6 p;
+	struct prefix *cp;
+
+	vrf = vrf_lookup_by_id(vrf_id);
+	if (!vrf)
+		return NULL;
+
+	p.family = AF_INET6;
+	p.prefix = *addr;
+	p.prefixlen = IPV6_MAX_BITLEN;
+
+	FOR_ALL_INTERFACES (vrf, ifp) {
+		for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) {
+			cp = connected->address;
+
+			if (cp->family == AF_INET6)
+				if (prefix_match(cp, (struct prefix *)&p)) {
+					if (IN6_IS_ADDR_LINKLOCAL(
+						    &cp->u.prefix6)) {
+						if (ifindex == ifp->ifindex)
+							return ifp;
+					} else
+						return ifp;
+				}
+		}
+	}
+	return NULL;
+}
+
+struct interface *if_lookup_by_ipv6_exact(struct in6_addr *addr,
+					  ifindex_t ifindex, vrf_id_t vrf_id)
+{
+	struct vrf *vrf;
+	struct listnode *cnode;
+	struct interface *ifp;
+	struct connected *connected;
+	struct prefix *cp;
+
+	vrf = vrf_lookup_by_id(vrf_id);
+	if (!vrf)
+		return NULL;
+
+	FOR_ALL_INTERFACES (vrf, ifp) {
+		for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) {
+			cp = connected->address;
+
+			if (cp->family == AF_INET6)
+				if (IPV6_ADDR_SAME(&cp->u.prefix6, addr)) {
+					if (IN6_IS_ADDR_LINKLOCAL(
+						    &cp->u.prefix6)) {
+						if (ifindex == ifp->ifindex)
+							return ifp;
+					} else
+						return ifp;
+				}
+		}
+	}
+	return NULL;
+}
+
+static int if_get_ipv6_global(struct interface *ifp, struct in6_addr *addr)
+{
+	struct listnode *cnode;
+	struct connected *connected;
+	struct prefix *cp;
+
+	for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) {
+		cp = connected->address;
+
+		if (cp->family == AF_INET6)
+			if (!IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6)) {
+				memcpy(addr, &cp->u.prefix6, IPV6_MAX_BYTELEN);
+				return 1;
+			}
+	}
+	return 0;
+}
+
+static bool if_get_ipv6_local(struct interface *ifp, struct in6_addr *addr)
+{
+	struct listnode *cnode;
+	struct connected *connected;
+	struct prefix *cp;
+
+	for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) {
+		cp = connected->address;
+
+		if (cp->family == AF_INET6)
+			if (IN6_IS_ADDR_LINKLOCAL(&cp->u.prefix6)) {
+				memcpy(addr, &cp->u.prefix6, IPV6_MAX_BYTELEN);
+				return true;
+			}
+	}
+	return false;
+}
+
+static int if_get_ipv4_address(struct interface *ifp, struct in_addr *addr)
+{
+	struct listnode *cnode;
+	struct connected *connected;
+	struct prefix *cp;
+
+	for (ALL_LIST_ELEMENTS_RO(ifp->connected, cnode, connected)) {
+		cp = connected->address;
+		if ((cp->family == AF_INET)
+		    && !ipv4_martian(&(cp->u.prefix4))) {
+			*addr = cp->u.prefix4;
+			return 1;
+		}
+	}
+	return 0;
+}
+
+
+bool bgp_zebra_nexthop_set(union sockunion *local, union sockunion *remote,
+			   struct bgp_nexthop *nexthop, struct peer *peer)
+{
+	int ret = 0;
+	struct interface *ifp = NULL;
+	bool v6_ll_avail = true;
+
+	memset(nexthop, 0, sizeof(struct bgp_nexthop));
+
+	if (!local)
+		return false;
+	if (!remote)
+		return false;
+
+	if (local->sa.sa_family == AF_INET) {
+		nexthop->v4 = local->sin.sin_addr;
+		if (peer->update_if)
+			ifp = if_lookup_by_name(peer->update_if,
+						peer->bgp->vrf_id);
+		else
+			ifp = if_lookup_by_ipv4_exact(&local->sin.sin_addr,
+						      peer->bgp->vrf_id);
+	}
+	if (local->sa.sa_family == AF_INET6) {
+		memcpy(&nexthop->v6_global, &local->sin6.sin6_addr, IPV6_MAX_BYTELEN);
+		if (IN6_IS_ADDR_LINKLOCAL(&local->sin6.sin6_addr)) {
+			if (peer->conf_if || peer->ifname)
+				ifp = if_lookup_by_name(peer->conf_if
+								? peer->conf_if
+								: peer->ifname,
+							peer->bgp->vrf_id);
+			else if (peer->update_if)
+				ifp = if_lookup_by_name(peer->update_if,
+							peer->bgp->vrf_id);
+		} else if (peer->update_if)
+			ifp = if_lookup_by_name(peer->update_if,
+						peer->bgp->vrf_id);
+		else
+			ifp = if_lookup_by_ipv6_exact(&local->sin6.sin6_addr,
+						      local->sin6.sin6_scope_id,
+						      peer->bgp->vrf_id);
+	}
+
+	/* Handle peerings via loopbacks. For instance, peer between
+	 * 127.0.0.1 and 127.0.0.2. In short, allow peering with self
+	 * via 127.0.0.0/8.
+	 */
+	if (!ifp && cmd_allow_reserved_ranges_get())
+		ifp = if_get_vrf_loopback(peer->bgp->vrf_id);
+
+	if (!ifp) {
+		/*
+		 * BGP views do not currently get proper data
+		 * from zebra( when attached ) to be able to
+		 * properly resolve nexthops, so give this
+		 * instance type a pass.
+		 */
+		if (peer->bgp->inst_type == BGP_INSTANCE_TYPE_VIEW)
+			return true;
+		/*
+		 * If we have no interface data but we have established
+		 * some connection w/ zebra than something has gone
+		 * terribly terribly wrong here, so say this failed
+		 * If we do not any zebra connection then not
+		 * having a ifp pointer is ok.
+		 */
+		return zclient_num_connects ? false : true;
+	}
+
+	nexthop->ifp = ifp;
+
+	/* IPv4 connection, fetch and store IPv6 local address(es) if any. */
+	if (local->sa.sa_family == AF_INET) {
+		/* IPv6 nexthop*/
+		ret = if_get_ipv6_global(ifp, &nexthop->v6_global);
+
+		if (!ret) {
+			/* There is no global nexthop. Use link-local address as
+			 * both the
+			 * global and link-local nexthop. In this scenario, the
+			 * expectation
+			 * for interop is that the network admin would use a
+			 * route-map to
+			 * specify the global IPv6 nexthop.
+			 */
+			v6_ll_avail =
+				if_get_ipv6_local(ifp, &nexthop->v6_global);
+			memcpy(&nexthop->v6_local, &nexthop->v6_global,
+			       IPV6_MAX_BYTELEN);
+		} else
+			v6_ll_avail =
+				if_get_ipv6_local(ifp, &nexthop->v6_local);
+
+		/*
+		 * If we are a v4 connection and we are not doing unnumbered
+		 * not having a v6 LL address is ok
+		 */
+		if (!v6_ll_avail && !peer->conf_if)
+			v6_ll_avail = true;
+		if (if_lookup_by_ipv4(&remote->sin.sin_addr, peer->bgp->vrf_id))
+			peer->shared_network = 1;
+		else
+			peer->shared_network = 0;
+	}
+
+	/* IPv6 connection, fetch and store IPv4 local address if any. */
+	if (local->sa.sa_family == AF_INET6) {
+		struct interface *direct = NULL;
+
+		/* IPv4 nexthop. */
+		ret = if_get_ipv4_address(ifp, &nexthop->v4);
+		if (!ret && peer->local_id.s_addr != INADDR_ANY)
+			nexthop->v4 = peer->local_id;
+
+		/* Global address*/
+		if (!IN6_IS_ADDR_LINKLOCAL(&local->sin6.sin6_addr)) {
+			memcpy(&nexthop->v6_global, &local->sin6.sin6_addr,
+			       IPV6_MAX_BYTELEN);
+
+			/* If directly connected set link-local address. */
+			direct = if_lookup_by_ipv6(&remote->sin6.sin6_addr,
+						   remote->sin6.sin6_scope_id,
+						   peer->bgp->vrf_id);
+			if (direct)
+				v6_ll_avail = if_get_ipv6_local(
+					ifp, &nexthop->v6_local);
+			/*
+			 * It's fine to not have a v6 LL when using
+			 * update-source loopback/vrf
+			 */
+			if (!v6_ll_avail && if_is_loopback(ifp))
+				v6_ll_avail = true;
+			else if (!v6_ll_avail) {
+				flog_warn(
+					EC_BGP_NO_LL_ADDRESS_AVAILABLE,
+					"Interface: %s does not have a v6 LL address associated with it, waiting until one is created for it",
+					ifp->name);
+			}
+		} else
+		/* Link-local address. */
+		{
+			ret = if_get_ipv6_global(ifp, &nexthop->v6_global);
+
+			/* If there is no global address.  Set link-local
+			   address as
+			   global.  I know this break RFC specification... */
+			/* In this scenario, the expectation for interop is that
+			 * the
+			 * network admin would use a route-map to specify the
+			 * global
+			 * IPv6 nexthop.
+			 */
+			if (!ret)
+				memcpy(&nexthop->v6_global,
+				       &local->sin6.sin6_addr,
+				       IPV6_MAX_BYTELEN);
+			/* Always set the link-local address */
+			memcpy(&nexthop->v6_local, &local->sin6.sin6_addr,
+			       IPV6_MAX_BYTELEN);
+		}
+
+		if (IN6_IS_ADDR_LINKLOCAL(&local->sin6.sin6_addr)
+		    || if_lookup_by_ipv6(&remote->sin6.sin6_addr,
+					 remote->sin6.sin6_scope_id,
+					 peer->bgp->vrf_id))
+			peer->shared_network = 1;
+		else
+			peer->shared_network = 0;
+	}
+
+/* KAME stack specific treatment.  */
+#ifdef KAME
+	if (IN6_IS_ADDR_LINKLOCAL(&nexthop->v6_global)
+	    && IN6_LINKLOCAL_IFINDEX(nexthop->v6_global)) {
+		SET_IN6_LINKLOCAL_IFINDEX(nexthop->v6_global, 0);
+	}
+	if (IN6_IS_ADDR_LINKLOCAL(&nexthop->v6_local)
+	    && IN6_LINKLOCAL_IFINDEX(nexthop->v6_local)) {
+		SET_IN6_LINKLOCAL_IFINDEX(nexthop->v6_local, 0);
+	}
+#endif /* KAME */
+
+	/* If we have identified the local interface, there is no error for now.
+	 */
+	return v6_ll_avail;
+}
+
+static struct in6_addr *
+bgp_path_info_to_ipv6_nexthop(struct bgp_path_info *path, ifindex_t *ifindex)
+{
+	struct in6_addr *nexthop = NULL;
+
+	/* Only global address nexthop exists. */
+	if (path->attr->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL
+	    || path->attr->mp_nexthop_len == BGP_ATTR_NHLEN_VPNV6_GLOBAL) {
+		nexthop = &path->attr->mp_nexthop_global;
+		if (IN6_IS_ADDR_LINKLOCAL(nexthop))
+			*ifindex = path->attr->nh_ifindex;
+	}
+
+	/* If both global and link-local address present. */
+	if (path->attr->mp_nexthop_len == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL
+	    || path->attr->mp_nexthop_len
+		       == BGP_ATTR_NHLEN_VPNV6_GLOBAL_AND_LL) {
+		/* Check if route-map is set to prefer global over link-local */
+		if (path->attr->mp_nexthop_prefer_global) {
+			nexthop = &path->attr->mp_nexthop_global;
+			if (IN6_IS_ADDR_LINKLOCAL(nexthop))
+				*ifindex = path->attr->nh_ifindex;
+		} else {
+			/* Workaround for Cisco's nexthop bug.  */
+			if (IN6_IS_ADDR_UNSPECIFIED(
+				    &path->attr->mp_nexthop_global)
+			    && path->peer->su_remote
+			    && path->peer->su_remote->sa.sa_family
+				       == AF_INET6) {
+				nexthop =
+					&path->peer->su_remote->sin6.sin6_addr;
+				if (IN6_IS_ADDR_LINKLOCAL(nexthop))
+					*ifindex = path->peer->nexthop.ifp
+							   ->ifindex;
+			} else {
+				nexthop = &path->attr->mp_nexthop_local;
+				if (IN6_IS_ADDR_LINKLOCAL(nexthop))
+					*ifindex = path->attr->nh_lla_ifindex;
+			}
+		}
+	}
+
+	return nexthop;
+}
+
+static bool bgp_table_map_apply(struct route_map *map, const struct prefix *p,
+				struct bgp_path_info *path)
+{
+	route_map_result_t ret;
+
+	ret = route_map_apply(map, p, path);
+	bgp_attr_flush(path->attr);
+
+	if (ret != RMAP_DENYMATCH)
+		return true;
+
+	if (bgp_debug_zebra(p)) {
+		if (p->family == AF_INET) {
+			zlog_debug(
+				"Zebra rmap deny: IPv4 route %pFX nexthop %pI4",
+				p, &path->attr->nexthop);
+		}
+		if (p->family == AF_INET6) {
+			ifindex_t ifindex;
+			struct in6_addr *nexthop;
+
+			nexthop = bgp_path_info_to_ipv6_nexthop(path, &ifindex);
+			zlog_debug(
+				"Zebra rmap deny: IPv6 route %pFX nexthop %pI6",
+				p, nexthop);
+		}
+	}
+	return false;
+}
+
+static struct event *bgp_tm_thread_connect;
+static bool bgp_tm_status_connected;
+static bool bgp_tm_chunk_obtained;
+#define BGP_FLOWSPEC_TABLE_CHUNK 100000
+static uint32_t bgp_tm_min, bgp_tm_max, bgp_tm_chunk_size;
+struct bgp *bgp_tm_bgp;
+
+static void bgp_zebra_tm_connect(struct event *t)
+{
+	struct zclient *zclient;
+	int delay = 10, ret = 0;
+
+	zclient = EVENT_ARG(t);
+	if (bgp_tm_status_connected && zclient->sock > 0)
+		delay = 60;
+	else {
+		bgp_tm_status_connected = false;
+		ret = tm_table_manager_connect(zclient);
+	}
+	if (ret < 0) {
+		zlog_err("Error connecting to table manager!");
+		bgp_tm_status_connected = false;
+	} else {
+		if (!bgp_tm_status_connected) {
+			if (BGP_DEBUG(zebra, ZEBRA))
+				zlog_debug(
+					"Connecting to table manager. Success");
+		}
+		bgp_tm_status_connected = true;
+		if (!bgp_tm_chunk_obtained) {
+			if (bgp_zebra_get_table_range(zclient, bgp_tm_chunk_size,
+						      &bgp_tm_min,
+						      &bgp_tm_max) >= 0) {
+				bgp_tm_chunk_obtained = true;
+				/* parse non installed entries */
+				bgp_zebra_announce_table(bgp_tm_bgp, AFI_IP, SAFI_FLOWSPEC);
+			}
+		}
+	}
+	event_add_timer(bm->master, bgp_zebra_tm_connect, zclient, delay,
+			&bgp_tm_thread_connect);
+}
+
+bool bgp_zebra_tm_chunk_obtained(void)
+{
+	return bgp_tm_chunk_obtained;
+}
+
+uint32_t bgp_zebra_tm_get_id(void)
+{
+	static int table_id;
+
+	if (!bgp_tm_chunk_obtained)
+		return ++table_id;
+	return bgp_tm_min++;
+}
+
+void bgp_zebra_init_tm_connect(struct bgp *bgp)
+{
+	int delay = 1;
+
+	/* if already set, do nothing
+	 */
+	if (bgp_tm_thread_connect != NULL)
+		return;
+	bgp_tm_status_connected = false;
+	bgp_tm_chunk_obtained = false;
+	bgp_tm_min = bgp_tm_max = 0;
+	bgp_tm_chunk_size = BGP_FLOWSPEC_TABLE_CHUNK;
+	bgp_tm_bgp = bgp;
+	event_add_timer(bm->master, bgp_zebra_tm_connect, zclient_sync, delay,
+			&bgp_tm_thread_connect);
+}
+
+int bgp_zebra_get_table_range(struct zclient *zc, uint32_t chunk_size,
+			      uint32_t *start, uint32_t *end)
+{
+	int ret;
+
+	if (!bgp_tm_status_connected)
+		return -1;
+	ret = tm_get_table_chunk(zc, chunk_size, start, end);
+	if (ret < 0) {
+		flog_err(EC_BGP_TABLE_CHUNK,
+			 "BGP: Error getting table chunk %u", chunk_size);
+		return -1;
+	}
+	zlog_info("BGP: Table Manager returns range from chunk %u is [%u %u]",
+		 chunk_size, *start, *end);
+	return 0;
+}
+
+static bool update_ipv4nh_for_route_install(int nh_othervrf, struct bgp *nh_bgp,
+					    struct in_addr *nexthop,
+					    struct attr *attr, bool is_evpn,
+					    struct zapi_nexthop *api_nh)
+{
+	api_nh->gate.ipv4 = *nexthop;
+	api_nh->vrf_id = nh_bgp->vrf_id;
+
+	/* Need to set fields appropriately for EVPN routes imported into
+	 * a VRF (which are programmed as onlink on l3-vni SVI) as well as
+	 * connected routes leaked into a VRF.
+	 */
+	if (attr->nh_type == NEXTHOP_TYPE_BLACKHOLE) {
+		api_nh->type = attr->nh_type;
+		api_nh->bh_type = attr->bh_type;
+	} else if (is_evpn) {
+		/*
+		 * If the nexthop is EVPN overlay index gateway IP,
+		 * treat the nexthop as NEXTHOP_TYPE_IPV4
+		 * Else, mark the nexthop as onlink.
+		 */
+		if (attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP)
+			api_nh->type = NEXTHOP_TYPE_IPV4;
+		else {
+			api_nh->type = NEXTHOP_TYPE_IPV4_IFINDEX;
+			SET_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_EVPN);
+			SET_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_ONLINK);
+			api_nh->ifindex = nh_bgp->l3vni_svi_ifindex;
+		}
+	} else if (nh_othervrf && api_nh->gate.ipv4.s_addr == INADDR_ANY) {
+		api_nh->type = NEXTHOP_TYPE_IFINDEX;
+		api_nh->ifindex = attr->nh_ifindex;
+	} else
+		api_nh->type = NEXTHOP_TYPE_IPV4;
+
+	return true;
+}
+
+static bool update_ipv6nh_for_route_install(int nh_othervrf, struct bgp *nh_bgp,
+					    struct in6_addr *nexthop,
+					    ifindex_t ifindex,
+					    struct bgp_path_info *pi,
+					    struct bgp_path_info *best_pi,
+					    bool is_evpn,
+					    struct zapi_nexthop *api_nh)
+{
+	struct attr *attr;
+
+	attr = pi->attr;
+	api_nh->vrf_id = nh_bgp->vrf_id;
+
+	if (attr->nh_type == NEXTHOP_TYPE_BLACKHOLE) {
+		api_nh->type = attr->nh_type;
+		api_nh->bh_type = attr->bh_type;
+	} else if (is_evpn) {
+		/*
+		 * If the nexthop is EVPN overlay index gateway IP,
+		 * treat the nexthop as NEXTHOP_TYPE_IPV4
+		 * Else, mark the nexthop as onlink.
+		 */
+		if (attr->evpn_overlay.type == OVERLAY_INDEX_GATEWAY_IP)
+			api_nh->type = NEXTHOP_TYPE_IPV6;
+		else {
+			api_nh->type = NEXTHOP_TYPE_IPV6_IFINDEX;
+			SET_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_EVPN);
+			SET_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_ONLINK);
+			api_nh->ifindex = nh_bgp->l3vni_svi_ifindex;
+		}
+	} else if (nh_othervrf) {
+		if (IN6_IS_ADDR_UNSPECIFIED(nexthop)) {
+			api_nh->type = NEXTHOP_TYPE_IFINDEX;
+			api_nh->ifindex = attr->nh_ifindex;
+		} else if (IN6_IS_ADDR_LINKLOCAL(nexthop)) {
+			if (ifindex == 0)
+				return false;
+			api_nh->type = NEXTHOP_TYPE_IPV6_IFINDEX;
+			api_nh->ifindex = ifindex;
+		} else {
+			api_nh->type = NEXTHOP_TYPE_IPV6;
+			api_nh->ifindex = 0;
+		}
+	} else {
+		if (IN6_IS_ADDR_LINKLOCAL(nexthop)) {
+			if (pi == best_pi
+			    && attr->mp_nexthop_len
+				       == BGP_ATTR_NHLEN_IPV6_GLOBAL_AND_LL)
+				if (pi->peer->nexthop.ifp)
+					ifindex =
+						pi->peer->nexthop.ifp->ifindex;
+			if (!ifindex) {
+				if (pi->peer->conf_if)
+					ifindex = pi->peer->ifp->ifindex;
+				else if (pi->peer->ifname)
+					ifindex = ifname2ifindex(
+						pi->peer->ifname,
+						pi->peer->bgp->vrf_id);
+				else if (pi->peer->nexthop.ifp)
+					ifindex =
+						pi->peer->nexthop.ifp->ifindex;
+			}
+
+			if (ifindex == 0)
+				return false;
+			api_nh->type = NEXTHOP_TYPE_IPV6_IFINDEX;
+			api_nh->ifindex = ifindex;
+		} else {
+			api_nh->type = NEXTHOP_TYPE_IPV6;
+			api_nh->ifindex = 0;
+		}
+	}
+	/* api_nh structure has union of gate and bh_type */
+	if (nexthop && api_nh->type != NEXTHOP_TYPE_BLACKHOLE)
+		api_nh->gate.ipv6 = *nexthop;
+
+	return true;
+}
+
+static bool bgp_zebra_use_nhop_weighted(struct bgp *bgp, struct attr *attr,
+					uint64_t tot_bw, uint32_t *nh_weight)
+{
+	uint32_t bw;
+	uint64_t tmp;
+
+	bw = attr->link_bw;
+	/* zero link-bandwidth and link-bandwidth not present are treated
+	 * as the same situation.
+	 */
+	if (!bw) {
+		/* the only situations should be if we're either told
+		 * to skip or use default weight.
+		 */
+		if (bgp->lb_handling == BGP_LINK_BW_SKIP_MISSING)
+			return false;
+		*nh_weight = BGP_ZEBRA_DEFAULT_NHOP_WEIGHT;
+	} else {
+		tmp = (uint64_t)bw * 100;
+		*nh_weight = ((uint32_t)(tmp / tot_bw));
+	}
+
+	return true;
+}
+
+void bgp_zebra_announce(struct bgp_dest *dest, const struct prefix *p,
+			struct bgp_path_info *info, struct bgp *bgp, afi_t afi,
+			safi_t safi)
+{
+	struct zapi_route api = { 0 };
+	struct zapi_nexthop *api_nh;
+	int nh_family;
+	unsigned int valid_nh_count = 0;
+	bool allow_recursion = false;
+	uint8_t distance;
+	struct peer *peer;
+	struct bgp_path_info *mpinfo;
+	struct bgp *bgp_orig;
+	uint32_t metric;
+	struct attr local_attr;
+	struct bgp_path_info local_info;
+	struct bgp_path_info *mpinfo_cp = &local_info;
+	route_tag_t tag;
+	mpls_label_t *labels;
+	uint32_t num_labels = 0;
+	mpls_label_t nh_label;
+	int nh_othervrf = 0;
+	bool nh_updated = false;
+	bool do_wt_ecmp;
+	uint64_t cum_bw = 0;
+	uint32_t nhg_id = 0;
+	bool is_add;
+	uint32_t ttl = 0;
+	uint32_t bos = 0;
+	uint32_t exp = 0;
+
+	/*
+	 * BGP is installing this route and bgp has been configured
+	 * to suppress announcements until the route has been installed
+	 * let's set the fact that we expect this route to be installed
+	 */
+	if (BGP_SUPPRESS_FIB_ENABLED(bgp))
+		SET_FLAG(dest->flags, BGP_NODE_FIB_INSTALL_PENDING);
+
+	/* Don't try to install if we're not connected to Zebra or Zebra doesn't
+	 * know of this instance.
+	 */
+	if (!bgp_install_info_to_zebra(bgp))
+		return;
+
+	if (bgp->main_zebra_update_hold)
+		return;
+
+	if (safi == SAFI_FLOWSPEC) {
+		bgp_pbr_update_entry(bgp, bgp_dest_get_prefix(dest), info, afi,
+				     safi, true);
+		return;
+	}
+
+	/*
+	 * vrf leaking support (will have only one nexthop)
+	 */
+	if (info->extra && info->extra->vrfleak &&
+	    info->extra->vrfleak->bgp_orig)
+		nh_othervrf = 1;
+
+	/* Make Zebra API structure. */
+	api.vrf_id = bgp->vrf_id;
+	api.type = ZEBRA_ROUTE_BGP;
+	api.safi = safi;
+	api.prefix = *p;
+	SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
+
+	peer = info->peer;
+
+	if (info->type == ZEBRA_ROUTE_BGP
+	    && info->sub_type == BGP_ROUTE_IMPORTED) {
+
+		/* Obtain peer from parent */
+		if (info->extra && info->extra->vrfleak &&
+		    info->extra->vrfleak->parent)
+			peer = ((struct bgp_path_info *)(info->extra->vrfleak
+								 ->parent))
+				       ->peer;
+	}
+
+	tag = info->attr->tag;
+
+	if (peer->sort == BGP_PEER_IBGP || peer->sort == BGP_PEER_CONFED
+	    || info->sub_type == BGP_ROUTE_AGGREGATE) {
+		SET_FLAG(api.flags, ZEBRA_FLAG_IBGP);
+		SET_FLAG(api.flags, ZEBRA_FLAG_ALLOW_RECURSION);
+	}
+
+	if ((peer->sort == BGP_PEER_EBGP && peer->ttl != BGP_DEFAULT_TTL)
+	    || CHECK_FLAG(peer->flags, PEER_FLAG_DISABLE_CONNECTED_CHECK)
+	    || CHECK_FLAG(bgp->flags, BGP_FLAG_DISABLE_NH_CONNECTED_CHK))
+
+		allow_recursion = true;
+
+	if (info->attr->rmap_table_id) {
+		SET_FLAG(api.message, ZAPI_MESSAGE_TABLEID);
+		api.tableid = info->attr->rmap_table_id;
+	}
+
+	if (CHECK_FLAG(info->attr->flag, ATTR_FLAG_BIT(BGP_ATTR_SRTE_COLOR)))
+		SET_FLAG(api.message, ZAPI_MESSAGE_SRTE);
+
+	/* Metric is currently based on the best-path only */
+	metric = info->attr->med;
+
+	/* Determine if we're doing weighted ECMP or not */
+	do_wt_ecmp = bgp_path_info_mpath_chkwtd(bgp, info);
+	if (do_wt_ecmp)
+		cum_bw = bgp_path_info_mpath_cumbw(info);
+
+	/* EVPN MAC-IP routes are installed with a L3 NHG id */
+	if (bgp_evpn_path_es_use_nhg(bgp, info, &nhg_id)) {
+		mpinfo = NULL;
+		api.nhgid = nhg_id;
+		if (nhg_id)
+			SET_FLAG(api.message, ZAPI_MESSAGE_NHG);
+	} else {
+		mpinfo = info;
+	}
+
+	for (; mpinfo; mpinfo = bgp_path_info_mpath_next(mpinfo)) {
+		labels = NULL;
+		num_labels = 0;
+		uint32_t nh_weight;
+		bool is_evpn;
+		bool is_parent_evpn;
+
+		if (valid_nh_count >= multipath_num)
+			break;
+
+		*mpinfo_cp = *mpinfo;
+		nh_weight = 0;
+
+		/* Get nexthop address-family */
+		if (p->family == AF_INET &&
+		    !BGP_ATTR_MP_NEXTHOP_LEN_IP6(mpinfo_cp->attr))
+			nh_family = AF_INET;
+		else if (p->family == AF_INET6 ||
+			 (p->family == AF_INET &&
+			  BGP_ATTR_MP_NEXTHOP_LEN_IP6(mpinfo_cp->attr)))
+			nh_family = AF_INET6;
+		else
+			continue;
+
+		/* If processing for weighted ECMP, determine the next hop's
+		 * weight. Based on user setting, we may skip the next hop
+		 * in some situations.
+		 */
+		if (do_wt_ecmp) {
+			if (!bgp_zebra_use_nhop_weighted(bgp, mpinfo->attr,
+							 cum_bw, &nh_weight))
+				continue;
+		}
+		api_nh = &api.nexthops[valid_nh_count];
+
+		if (CHECK_FLAG(info->attr->flag,
+			       ATTR_FLAG_BIT(BGP_ATTR_SRTE_COLOR)))
+			api_nh->srte_color = bgp_attr_get_color(info->attr);
+
+		if (bgp_debug_zebra(&api.prefix)) {
+			if (mpinfo->extra) {
+				zlog_debug("%s: p=%pFX, bgp_is_valid_label: %d",
+					   __func__, p,
+					   bgp_is_valid_label(
+						   &mpinfo->extra->label[0]));
+			} else {
+				zlog_debug(
+					"%s: p=%pFX, extra is NULL, no label",
+					__func__, p);
+			}
+		}
+
+		if (bgp->table_map[afi][safi].name) {
+			/* Copy info and attributes, so the route-map
+			   apply doesn't modify the BGP route info. */
+			local_attr = *mpinfo->attr;
+			mpinfo_cp->attr = &local_attr;
+			if (!bgp_table_map_apply(bgp->table_map[afi][safi].map,
+						 p, mpinfo_cp))
+				continue;
+
+			/* metric/tag is only allowed to be
+			 * overridden on 1st nexthop */
+			if (mpinfo == info) {
+				metric = mpinfo_cp->attr->med;
+				tag = mpinfo_cp->attr->tag;
+			}
+		}
+
+		BGP_ORIGINAL_UPDATE(bgp_orig, mpinfo, bgp);
+
+		is_parent_evpn = is_route_parent_evpn(mpinfo);
+
+		if (nh_family == AF_INET) {
+			nh_updated = update_ipv4nh_for_route_install(
+				nh_othervrf, bgp_orig,
+				&mpinfo_cp->attr->nexthop, mpinfo_cp->attr,
+				is_parent_evpn, api_nh);
+		} else {
+			ifindex_t ifindex = IFINDEX_INTERNAL;
+			struct in6_addr *nexthop;
+
+			nexthop = bgp_path_info_to_ipv6_nexthop(mpinfo_cp,
+								&ifindex);
+
+			if (!nexthop)
+				nh_updated = update_ipv4nh_for_route_install(
+					nh_othervrf, bgp_orig,
+					&mpinfo_cp->attr->nexthop,
+					mpinfo_cp->attr, is_parent_evpn,
+					api_nh);
+			else
+				nh_updated = update_ipv6nh_for_route_install(
+					nh_othervrf, bgp_orig, nexthop, ifindex,
+					mpinfo, info, is_parent_evpn, api_nh);
+		}
+
+		is_evpn = !!CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_EVPN);
+
+		/* Did we get proper nexthop info to update zebra? */
+		if (!nh_updated)
+			continue;
+
+		/* Allow recursion if it is a multipath group with both
+		 * eBGP and iBGP paths.
+		 */
+		if (!allow_recursion
+		    && CHECK_FLAG(bgp->flags, BGP_FLAG_PEERTYPE_MULTIPATH_RELAX)
+		    && (mpinfo->peer->sort == BGP_PEER_IBGP
+			|| mpinfo->peer->sort == BGP_PEER_CONFED))
+			allow_recursion = true;
+
+		if (mpinfo->extra) {
+			labels = mpinfo->extra->label;
+			num_labels = mpinfo->extra->num_labels;
+		}
+
+		if (labels && (num_labels > 0) &&
+		    (is_evpn || bgp_is_valid_label(&labels[0]))) {
+			enum lsp_types_t nh_label_type = ZEBRA_LSP_NONE;
+
+			if (is_evpn) {
+				nh_label = *bgp_evpn_path_info_labels_get_l3vni(
+					labels, num_labels);
+				nh_label_type = ZEBRA_LSP_EVPN;
+			} else {
+				mpls_lse_decode(labels[0], &nh_label, &ttl,
+						&exp, &bos);
+			}
+
+			SET_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_LABEL);
+			api_nh->label_num = 1;
+			api_nh->label_type = nh_label_type;
+			api_nh->labels[0] = nh_label;
+		}
+
+		if (is_evpn
+		    && mpinfo->attr->evpn_overlay.type
+			       != OVERLAY_INDEX_GATEWAY_IP)
+			memcpy(&api_nh->rmac, &(mpinfo->attr->rmac),
+			       sizeof(struct ethaddr));
+
+		api_nh->weight = nh_weight;
+
+		if (((mpinfo->attr->srv6_l3vpn &&
+		      !sid_zero_ipv6(&mpinfo->attr->srv6_l3vpn->sid)) ||
+		     (mpinfo->attr->srv6_vpn &&
+		      !sid_zero_ipv6(&mpinfo->attr->srv6_vpn->sid))) &&
+		    !is_evpn && bgp_is_valid_label(&labels[0])) {
+			struct in6_addr *sid_tmp =
+				mpinfo->attr->srv6_l3vpn
+					? (&mpinfo->attr->srv6_l3vpn->sid)
+					: (&mpinfo->attr->srv6_vpn->sid);
+
+			memcpy(&api_nh->seg6_segs[0], sid_tmp,
+			       sizeof(api_nh->seg6_segs[0]));
+
+			if (mpinfo->attr->srv6_l3vpn &&
+			    mpinfo->attr->srv6_l3vpn->transposition_len != 0) {
+				mpls_lse_decode(labels[0], &nh_label, &ttl,
+						&exp, &bos);
+
+				if (nh_label < MPLS_LABEL_UNRESERVED_MIN) {
+					if (bgp_debug_zebra(&api.prefix))
+						zlog_debug(
+							"skip invalid SRv6 routes: transposition scheme is used, but label is too small");
+					continue;
+				}
+
+				transpose_sid(&api_nh->seg6_segs[0], nh_label,
+					      mpinfo->attr->srv6_l3vpn
+						      ->transposition_offset,
+					      mpinfo->attr->srv6_l3vpn
+						      ->transposition_len);
+			}
+
+			api_nh->seg_num = 1;
+			SET_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_SEG6);
+		}
+
+		valid_nh_count++;
+	}
+
+	is_add = (valid_nh_count || nhg_id) ? true : false;
+
+	if (is_add && CHECK_FLAG(bm->flags, BM_FLAG_SEND_EXTRA_DATA_TO_ZEBRA)) {
+		struct bgp_zebra_opaque bzo = {};
+		const char *reason =
+			bgp_path_selection_reason2str(dest->reason);
+
+		strlcpy(bzo.aspath, info->attr->aspath->str,
+			sizeof(bzo.aspath));
+
+		if (info->attr->flag & ATTR_FLAG_BIT(BGP_ATTR_COMMUNITIES))
+			strlcpy(bzo.community,
+				bgp_attr_get_community(info->attr)->str,
+				sizeof(bzo.community));
+
+		if (info->attr->flag
+		    & ATTR_FLAG_BIT(BGP_ATTR_LARGE_COMMUNITIES))
+			strlcpy(bzo.lcommunity,
+				bgp_attr_get_lcommunity(info->attr)->str,
+				sizeof(bzo.lcommunity));
+
+		strlcpy(bzo.selection_reason, reason,
+			sizeof(bzo.selection_reason));
+
+		SET_FLAG(api.message, ZAPI_MESSAGE_OPAQUE);
+		api.opaque.length = MIN(sizeof(struct bgp_zebra_opaque),
+					ZAPI_MESSAGE_OPAQUE_LENGTH);
+		memcpy(api.opaque.data, &bzo, api.opaque.length);
+	}
+
+	if (allow_recursion)
+		SET_FLAG(api.flags, ZEBRA_FLAG_ALLOW_RECURSION);
+
+	/*
+	 * When we create an aggregate route we must also
+	 * install a Null0 route in the RIB, so overwrite
+	 * what was written into api with a blackhole route
+	 */
+	if (info->sub_type == BGP_ROUTE_AGGREGATE)
+		zapi_route_set_blackhole(&api, BLACKHOLE_NULL);
+	else
+		api.nexthop_num = valid_nh_count;
+
+	SET_FLAG(api.message, ZAPI_MESSAGE_METRIC);
+	api.metric = metric;
+
+	if (tag) {
+		SET_FLAG(api.message, ZAPI_MESSAGE_TAG);
+		api.tag = tag;
+	}
+
+	distance = bgp_distance_apply(p, info, afi, safi, bgp);
+	if (distance) {
+		SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE);
+		api.distance = distance;
+	}
+
+	if (bgp_debug_zebra(p)) {
+		char nh_buf[INET6_ADDRSTRLEN];
+		char eth_buf[ETHER_ADDR_STRLEN + 7] = {'\0'};
+		char buf1[ETHER_ADDR_STRLEN];
+		char label_buf[20];
+		char sid_buf[20];
+		char segs_buf[256];
+		int i;
+
+		zlog_debug(
+			"Tx route %s VRF %u %pFX metric %u tag %" ROUTE_TAG_PRI
+			" count %d nhg %d",
+			is_add ? "add" : "delete", bgp->vrf_id, &api.prefix,
+			api.metric, api.tag, api.nexthop_num, nhg_id);
+		for (i = 0; i < api.nexthop_num; i++) {
+			api_nh = &api.nexthops[i];
+
+			switch (api_nh->type) {
+			case NEXTHOP_TYPE_IFINDEX:
+				nh_buf[0] = '\0';
+				break;
+			case NEXTHOP_TYPE_IPV4:
+			case NEXTHOP_TYPE_IPV4_IFINDEX:
+				nh_family = AF_INET;
+				inet_ntop(nh_family, &api_nh->gate, nh_buf,
+					  sizeof(nh_buf));
+				break;
+			case NEXTHOP_TYPE_IPV6:
+			case NEXTHOP_TYPE_IPV6_IFINDEX:
+				nh_family = AF_INET6;
+				inet_ntop(nh_family, &api_nh->gate, nh_buf,
+					  sizeof(nh_buf));
+				break;
+			case NEXTHOP_TYPE_BLACKHOLE:
+				strlcpy(nh_buf, "blackhole", sizeof(nh_buf));
+				break;
+			default:
+				/* Note: add new nexthop case */
+				assert(0);
+				break;
+			}
+
+			label_buf[0] = '\0';
+			eth_buf[0] = '\0';
+			segs_buf[0] = '\0';
+			if (CHECK_FLAG(api_nh->flags,
+				       ZAPI_NEXTHOP_FLAG_LABEL) &&
+			    !CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_EVPN))
+				snprintf(label_buf, sizeof(label_buf),
+					"label %u", api_nh->labels[0]);
+			if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_SEG6) &&
+			    !CHECK_FLAG(api_nh->flags,
+					ZAPI_NEXTHOP_FLAG_EVPN)) {
+				inet_ntop(AF_INET6, &api_nh->seg6_segs[0],
+					  sid_buf, sizeof(sid_buf));
+				snprintf(segs_buf, sizeof(segs_buf), "segs %s",
+					 sid_buf);
+			}
+			if (CHECK_FLAG(api_nh->flags, ZAPI_NEXTHOP_FLAG_EVPN) &&
+			    !is_zero_mac(&api_nh->rmac))
+				snprintf(eth_buf, sizeof(eth_buf), " RMAC %s",
+					 prefix_mac2str(&api_nh->rmac,
+							buf1, sizeof(buf1)));
+			zlog_debug("  nhop [%d]: %s if %u VRF %u wt %u %s %s %s",
+				   i + 1, nh_buf, api_nh->ifindex,
+				   api_nh->vrf_id, api_nh->weight,
+				   label_buf, segs_buf, eth_buf);
+		}
+
+		int recursion_flag = 0;
+
+		if (CHECK_FLAG(api.flags, ZEBRA_FLAG_ALLOW_RECURSION))
+			recursion_flag = 1;
+
+		zlog_debug("%s: %pFX: announcing to zebra (recursion %sset)",
+			   __func__, p, (recursion_flag ? "" : "NOT "));
+	}
+	zclient_route_send(is_add ? ZEBRA_ROUTE_ADD : ZEBRA_ROUTE_DELETE,
+			   zclient, &api);
+}
+
+/* Announce all routes of a table to zebra */
+void bgp_zebra_announce_table(struct bgp *bgp, afi_t afi, safi_t safi)
+{
+	struct bgp_dest *dest;
+	struct bgp_table *table;
+	struct bgp_path_info *pi;
+
+	/* Don't try to install if we're not connected to Zebra or Zebra doesn't
+	 * know of this instance.
+	 */
+	if (!bgp_install_info_to_zebra(bgp))
+		return;
+
+	table = bgp->rib[afi][safi];
+	if (!table)
+		return;
+
+	for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest))
+		for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next)
+			if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) &&
+
+			    (pi->type == ZEBRA_ROUTE_BGP
+			     && (pi->sub_type == BGP_ROUTE_NORMAL
+				 || pi->sub_type == BGP_ROUTE_IMPORTED)))
+
+				bgp_zebra_announce(dest,
+						   bgp_dest_get_prefix(dest),
+						   pi, bgp, afi, safi);
+}
+
+/* Announce routes of any bgp subtype of a table to zebra */
+void bgp_zebra_announce_table_all_subtypes(struct bgp *bgp, afi_t afi,
+					   safi_t safi)
+{
+	struct bgp_dest *dest;
+	struct bgp_table *table;
+	struct bgp_path_info *pi;
+
+	if (!bgp_install_info_to_zebra(bgp))
+		return;
+
+	table = bgp->rib[afi][safi];
+	if (!table)
+		return;
+
+	for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest))
+		for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next)
+			if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED) &&
+			    pi->type == ZEBRA_ROUTE_BGP)
+				bgp_zebra_announce(dest,
+						   bgp_dest_get_prefix(dest),
+						   pi, bgp, afi, safi);
+}
+
+void bgp_zebra_withdraw(const struct prefix *p, struct bgp_path_info *info,
+			struct bgp *bgp, safi_t safi)
+{
+	struct zapi_route api;
+	struct peer *peer;
+
+	/*
+	 * If we are withdrawing the route, we don't need to have this
+	 * flag set.  So unset it.
+	 */
+	UNSET_FLAG(info->net->flags, BGP_NODE_FIB_INSTALL_PENDING);
+
+	/* Don't try to install if we're not connected to Zebra or Zebra doesn't
+	 * know of this instance.
+	 */
+	if (!bgp_install_info_to_zebra(bgp))
+		return;
+
+	if (safi == SAFI_FLOWSPEC) {
+		peer = info->peer;
+		bgp_pbr_update_entry(peer->bgp, p, info, AFI_IP, safi, false);
+		return;
+	}
+
+	memset(&api, 0, sizeof(api));
+	api.vrf_id = bgp->vrf_id;
+	api.type = ZEBRA_ROUTE_BGP;
+	api.safi = safi;
+	api.prefix = *p;
+
+	if (info->attr->rmap_table_id) {
+		SET_FLAG(api.message, ZAPI_MESSAGE_TABLEID);
+		api.tableid = info->attr->rmap_table_id;
+	}
+
+	if (bgp_debug_zebra(p))
+		zlog_debug("Tx route delete VRF %u %pFX", bgp->vrf_id,
+			   &api.prefix);
+
+	zclient_route_send(ZEBRA_ROUTE_DELETE, zclient, &api);
+}
+
+/* Withdraw all entries in a BGP instances RIB table from Zebra */
+void bgp_zebra_withdraw_table_all_subtypes(struct bgp *bgp, afi_t afi, safi_t safi)
+{
+	struct bgp_dest *dest;
+	struct bgp_table *table;
+	struct bgp_path_info *pi;
+
+	if (!bgp_install_info_to_zebra(bgp))
+		return;
+
+	table = bgp->rib[afi][safi];
+	if (!table)
+		return;
+
+	for (dest = bgp_table_top(table); dest; dest = bgp_route_next(dest)) {
+		for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) {
+			if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED)
+			    && (pi->type == ZEBRA_ROUTE_BGP))
+				bgp_zebra_withdraw(bgp_dest_get_prefix(dest),
+						   pi, bgp, safi);
+		}
+	}
+}
+
+struct bgp_redist *bgp_redist_lookup(struct bgp *bgp, afi_t afi, uint8_t type,
+				     unsigned short instance)
+{
+	struct list *red_list;
+	struct listnode *node;
+	struct bgp_redist *red;
+
+	red_list = bgp->redist[afi][type];
+	if (!red_list)
+		return (NULL);
+
+	for (ALL_LIST_ELEMENTS_RO(red_list, node, red))
+		if (red->instance == instance)
+			return red;
+
+	return NULL;
+}
+
+struct bgp_redist *bgp_redist_add(struct bgp *bgp, afi_t afi, uint8_t type,
+				  unsigned short instance)
+{
+	struct list *red_list;
+	struct bgp_redist *red;
+
+	red = bgp_redist_lookup(bgp, afi, type, instance);
+	if (red)
+		return red;
+
+	if (!bgp->redist[afi][type])
+		bgp->redist[afi][type] = list_new();
+
+	red_list = bgp->redist[afi][type];
+	red = XCALLOC(MTYPE_BGP_REDIST, sizeof(struct bgp_redist));
+	red->instance = instance;
+
+	listnode_add(red_list, red);
+
+	return red;
+}
+
+static void bgp_redist_del(struct bgp *bgp, afi_t afi, uint8_t type,
+			   unsigned short instance)
+{
+	struct bgp_redist *red;
+
+	red = bgp_redist_lookup(bgp, afi, type, instance);
+
+	if (red) {
+		listnode_delete(bgp->redist[afi][type], red);
+		XFREE(MTYPE_BGP_REDIST, red);
+		if (!bgp->redist[afi][type]->count)
+			list_delete(&bgp->redist[afi][type]);
+	}
+}
+
+/* Other routes redistribution into BGP. */
+int bgp_redistribute_set(struct bgp *bgp, afi_t afi, int type,
+			 unsigned short instance, bool changed)
+{
+	/* If redistribute options are changed call
+	 * bgp_redistribute_unreg() to reset the option and withdraw
+	 * the routes
+	 */
+	if (changed)
+		bgp_redistribute_unreg(bgp, afi, type, instance);
+
+	/* Return if already redistribute flag is set. */
+	if (instance) {
+		if (redist_check_instance(&zclient->mi_redist[afi][type],
+					  instance))
+			return CMD_WARNING;
+
+		redist_add_instance(&zclient->mi_redist[afi][type], instance);
+	} else {
+		if (vrf_bitmap_check(&zclient->redist[afi][type], bgp->vrf_id))
+			return CMD_WARNING;
+
+#ifdef ENABLE_BGP_VNC
+		if (EVPN_ENABLED(bgp) && type == ZEBRA_ROUTE_VNC_DIRECT) {
+			vnc_export_bgp_enable(
+				bgp, afi); /* only enables if mode bits cfg'd */
+		}
+#endif
+
+		vrf_bitmap_set(&zclient->redist[afi][type], bgp->vrf_id);
+	}
+
+	/*
+	 * Don't try to register if we're not connected to Zebra or Zebra
+	 * doesn't know of this instance.
+	 *
+	 * When we come up later well resend if needed.
+	 */
+	if (!bgp_install_info_to_zebra(bgp))
+		return CMD_SUCCESS;
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("Tx redistribute add VRF %u afi %d %s %d",
+			   bgp->vrf_id, afi, zebra_route_string(type),
+			   instance);
+
+	/* Send distribute add message to zebra. */
+	zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type,
+				instance, bgp->vrf_id);
+
+	return CMD_SUCCESS;
+}
+
+int bgp_redistribute_resend(struct bgp *bgp, afi_t afi, int type,
+			    unsigned short instance)
+{
+	/* Don't try to send if we're not connected to Zebra or Zebra doesn't
+	 * know of this instance.
+	 */
+	if (!bgp_install_info_to_zebra(bgp))
+		return -1;
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("Tx redistribute del/add VRF %u afi %d %s %d",
+			   bgp->vrf_id, afi, zebra_route_string(type),
+			   instance);
+
+	/* Send distribute add message to zebra. */
+	zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient, afi, type,
+				instance, bgp->vrf_id);
+	zebra_redistribute_send(ZEBRA_REDISTRIBUTE_ADD, zclient, afi, type,
+				instance, bgp->vrf_id);
+
+	return 0;
+}
+
+/* Redistribute with route-map specification.  */
+bool bgp_redistribute_rmap_set(struct bgp_redist *red, const char *name,
+			       struct route_map *route_map)
+{
+	if (red->rmap.name && (strcmp(red->rmap.name, name) == 0))
+		return false;
+
+	XFREE(MTYPE_ROUTE_MAP_NAME, red->rmap.name);
+	/* Decrement the count for existing routemap and
+	 * increment the count for new route map.
+	 */
+	route_map_counter_decrement(red->rmap.map);
+	red->rmap.name = XSTRDUP(MTYPE_ROUTE_MAP_NAME, name);
+	red->rmap.map = route_map;
+	route_map_counter_increment(red->rmap.map);
+
+	return true;
+}
+
+/* Redistribute with metric specification.  */
+bool bgp_redistribute_metric_set(struct bgp *bgp, struct bgp_redist *red,
+				 afi_t afi, int type, uint32_t metric)
+{
+	struct bgp_dest *dest;
+	struct bgp_path_info *pi;
+
+	if (red->redist_metric_flag && red->redist_metric == metric)
+		return false;
+
+	red->redist_metric_flag = 1;
+	red->redist_metric = metric;
+
+	for (dest = bgp_table_top(bgp->rib[afi][SAFI_UNICAST]); dest;
+	     dest = bgp_route_next(dest)) {
+		for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) {
+			if (pi->sub_type == BGP_ROUTE_REDISTRIBUTE
+			    && pi->type == type
+			    && pi->instance == red->instance) {
+				struct attr *old_attr;
+				struct attr new_attr;
+
+				new_attr = *pi->attr;
+				new_attr.med = red->redist_metric;
+				old_attr = pi->attr;
+				pi->attr = bgp_attr_intern(&new_attr);
+				bgp_attr_unintern(&old_attr);
+
+				bgp_path_info_set_flag(dest, pi,
+						       BGP_PATH_ATTR_CHANGED);
+				bgp_process(bgp, dest, afi, SAFI_UNICAST);
+			}
+		}
+	}
+
+	return true;
+}
+
+/* Unset redistribution.  */
+int bgp_redistribute_unreg(struct bgp *bgp, afi_t afi, int type,
+			   unsigned short instance)
+{
+	struct bgp_redist *red;
+
+	red = bgp_redist_lookup(bgp, afi, type, instance);
+	if (!red)
+		return CMD_SUCCESS;
+
+	/* Return if zebra connection is disabled. */
+	if (instance) {
+		if (!redist_check_instance(&zclient->mi_redist[afi][type],
+					   instance))
+			return CMD_WARNING;
+		redist_del_instance(&zclient->mi_redist[afi][type], instance);
+	} else {
+		if (!vrf_bitmap_check(&zclient->redist[afi][type], bgp->vrf_id))
+			return CMD_WARNING;
+		vrf_bitmap_unset(&zclient->redist[afi][type], bgp->vrf_id);
+	}
+
+	if (bgp_install_info_to_zebra(bgp)) {
+		/* Send distribute delete message to zebra. */
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("Tx redistribute del VRF %u afi %d %s %d",
+				   bgp->vrf_id, afi, zebra_route_string(type),
+				   instance);
+		zebra_redistribute_send(ZEBRA_REDISTRIBUTE_DELETE, zclient, afi,
+					type, instance, bgp->vrf_id);
+	}
+
+	/* Withdraw redistributed routes from current BGP's routing table. */
+	bgp_redistribute_withdraw(bgp, afi, type, instance);
+
+	return CMD_SUCCESS;
+}
+
+/* Unset redistribution.  */
+static void _bgp_redistribute_unset(struct bgp *bgp, afi_t afi, int type,
+				    unsigned short instance)
+{
+	struct bgp_redist *red;
+
+/*
+ * vnc and vpn->vrf checks must be before red check because
+ * they operate within bgpd irrespective of zebra connection
+ * status. red lookup fails if there is no zebra connection.
+ */
+#ifdef ENABLE_BGP_VNC
+	if (EVPN_ENABLED(bgp) && type == ZEBRA_ROUTE_VNC_DIRECT) {
+		vnc_export_bgp_disable(bgp, afi);
+	}
+#endif
+
+	red = bgp_redist_lookup(bgp, afi, type, instance);
+	if (!red)
+		return;
+
+	bgp_redistribute_unreg(bgp, afi, type, instance);
+
+	/* Unset route-map. */
+	XFREE(MTYPE_ROUTE_MAP_NAME, red->rmap.name);
+	route_map_counter_decrement(red->rmap.map);
+	red->rmap.map = NULL;
+
+	/* Unset metric. */
+	red->redist_metric_flag = 0;
+	red->redist_metric = 0;
+
+	bgp_redist_del(bgp, afi, type, instance);
+}
+
+void bgp_redistribute_unset(struct bgp *bgp, afi_t afi, int type,
+			    unsigned short instance)
+{
+	struct listnode *node, *nnode;
+	struct bgp_redist *red;
+
+	if (type != ZEBRA_ROUTE_TABLE || instance != 0)
+		return _bgp_redistribute_unset(bgp, afi, type, instance);
+
+	/* walk over instance */
+	if (!bgp->redist[afi][type])
+		return;
+
+	for (ALL_LIST_ELEMENTS(bgp->redist[afi][type], node, nnode, red))
+		_bgp_redistribute_unset(bgp, afi, type, red->instance);
+}
+
+void bgp_redistribute_redo(struct bgp *bgp)
+{
+	afi_t afi;
+	int i;
+	struct list *red_list;
+	struct listnode *node;
+	struct bgp_redist *red;
+
+	for (afi = AFI_IP; afi < AFI_MAX; afi++) {
+		for (i = 0; i < ZEBRA_ROUTE_MAX; i++) {
+
+			red_list = bgp->redist[afi][i];
+			if (!red_list)
+				continue;
+
+			for (ALL_LIST_ELEMENTS_RO(red_list, node, red)) {
+				bgp_redistribute_resend(bgp, afi, i,
+							red->instance);
+			}
+		}
+	}
+}
+
+void bgp_zclient_reset(void)
+{
+	zclient_reset(zclient);
+}
+
+/* Register this instance with Zebra. Invoked upon connect (for
+ * default instance) and when other VRFs are learnt (or created and
+ * already learnt).
+ */
+void bgp_zebra_instance_register(struct bgp *bgp)
+{
+	/* Don't try to register if we're not connected to Zebra */
+	if (!zclient || zclient->sock < 0)
+		return;
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("Registering VRF %u", bgp->vrf_id);
+
+	/* Register for router-id, interfaces, redistributed routes. */
+	zclient_send_reg_requests(zclient, bgp->vrf_id);
+
+	/* For EVPN instance, register to learn about VNIs, if appropriate. */
+	if (bgp->advertise_all_vni)
+		bgp_zebra_advertise_all_vni(bgp, 1);
+
+	bgp_nht_register_nexthops(bgp);
+}
+
+/* Deregister this instance with Zebra. Invoked upon the instance
+ * being deleted (default or VRF) and it is already registered.
+ */
+void bgp_zebra_instance_deregister(struct bgp *bgp)
+{
+	/* Don't try to deregister if we're not connected to Zebra */
+	if (zclient->sock < 0)
+		return;
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("Deregistering VRF %u", bgp->vrf_id);
+
+	/* For EVPN instance, unregister learning about VNIs, if appropriate. */
+	if (bgp->advertise_all_vni)
+		bgp_zebra_advertise_all_vni(bgp, 0);
+
+	/* Deregister for router-id, interfaces, redistributed routes. */
+	zclient_send_dereg_requests(zclient, bgp->vrf_id);
+}
+
+void bgp_zebra_initiate_radv(struct bgp *bgp, struct peer *peer)
+{
+	uint32_t ra_interval = BGP_UNNUM_DEFAULT_RA_INTERVAL;
+
+	/* Don't try to initiate if we're not connected to Zebra */
+	if (zclient->sock < 0)
+		return;
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("%u: Initiating RA for peer %s", bgp->vrf_id,
+			   peer->host);
+
+	/*
+	 * If unnumbered peer (peer->ifp) call thru zapi to start RAs.
+	 * If we don't have an ifp pointer, call function to find the
+	 * ifps for a numbered enhe peer to turn RAs on.
+	 */
+	peer->ifp ? zclient_send_interface_radv_req(zclient, bgp->vrf_id,
+						    peer->ifp, 1, ra_interval)
+		  : bgp_nht_reg_enhe_cap_intfs(peer);
+}
+
+void bgp_zebra_terminate_radv(struct bgp *bgp, struct peer *peer)
+{
+	/* Don't try to terminate if we're not connected to Zebra */
+	if (zclient->sock < 0)
+		return;
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("%u: Terminating RA for peer %s", bgp->vrf_id,
+			   peer->host);
+
+	/*
+	 * If unnumbered peer (peer->ifp) call thru zapi to stop RAs.
+	 * If we don't have an ifp pointer, call function to find the
+	 * ifps for a numbered enhe peer to turn RAs off.
+	 */
+	peer->ifp ? zclient_send_interface_radv_req(zclient, bgp->vrf_id,
+						    peer->ifp, 0, 0)
+		  : bgp_nht_dereg_enhe_cap_intfs(peer);
+}
+
+int bgp_zebra_advertise_subnet(struct bgp *bgp, int advertise, vni_t vni)
+{
+	struct stream *s = NULL;
+
+	/* Check socket. */
+	if (!zclient || zclient->sock < 0)
+		return 0;
+
+	/* Don't try to register if Zebra doesn't know of this instance. */
+	if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) {
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug(
+				"%s: No zebra instance to talk to, cannot advertise subnet",
+				__func__);
+		return 0;
+	}
+
+	s = zclient->obuf;
+	stream_reset(s);
+
+	zclient_create_header(s, ZEBRA_ADVERTISE_SUBNET, bgp->vrf_id);
+	stream_putc(s, advertise);
+	stream_put3(s, vni);
+	stream_putw_at(s, 0, stream_get_endp(s));
+
+	return zclient_send_message(zclient);
+}
+
+int bgp_zebra_advertise_svi_macip(struct bgp *bgp, int advertise, vni_t vni)
+{
+	struct stream *s = NULL;
+
+	/* Check socket. */
+	if (!zclient || zclient->sock < 0)
+		return 0;
+
+	/* Don't try to register if Zebra doesn't know of this instance. */
+	if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp))
+		return 0;
+
+	s = zclient->obuf;
+	stream_reset(s);
+
+	zclient_create_header(s, ZEBRA_ADVERTISE_SVI_MACIP, bgp->vrf_id);
+	stream_putc(s, advertise);
+	stream_putl(s, vni);
+	stream_putw_at(s, 0, stream_get_endp(s));
+
+	return zclient_send_message(zclient);
+}
+
+int bgp_zebra_advertise_gw_macip(struct bgp *bgp, int advertise, vni_t vni)
+{
+	struct stream *s = NULL;
+
+	/* Check socket. */
+	if (!zclient || zclient->sock < 0)
+		return 0;
+
+	/* Don't try to register if Zebra doesn't know of this instance. */
+	if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) {
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug(
+				"%s: No zebra instance to talk to, not installing gw_macip",
+				__func__);
+		return 0;
+	}
+
+	s = zclient->obuf;
+	stream_reset(s);
+
+	zclient_create_header(s, ZEBRA_ADVERTISE_DEFAULT_GW, bgp->vrf_id);
+	stream_putc(s, advertise);
+	stream_putl(s, vni);
+	stream_putw_at(s, 0, stream_get_endp(s));
+
+	return zclient_send_message(zclient);
+}
+
+int bgp_zebra_vxlan_flood_control(struct bgp *bgp,
+				  enum vxlan_flood_control flood_ctrl)
+{
+	struct stream *s;
+
+	/* Check socket. */
+	if (!zclient || zclient->sock < 0)
+		return 0;
+
+	/* Don't try to register if Zebra doesn't know of this instance. */
+	if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp)) {
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug(
+				"%s: No zebra instance to talk to, not installing all vni",
+				__func__);
+		return 0;
+	}
+
+	s = zclient->obuf;
+	stream_reset(s);
+
+	zclient_create_header(s, ZEBRA_VXLAN_FLOOD_CONTROL, bgp->vrf_id);
+	stream_putc(s, flood_ctrl);
+	stream_putw_at(s, 0, stream_get_endp(s));
+
+	return zclient_send_message(zclient);
+}
+
+int bgp_zebra_advertise_all_vni(struct bgp *bgp, int advertise)
+{
+	struct stream *s;
+
+	/* Check socket. */
+	if (!zclient || zclient->sock < 0)
+		return 0;
+
+	/* Don't try to register if Zebra doesn't know of this instance. */
+	if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp))
+		return 0;
+
+	s = zclient->obuf;
+	stream_reset(s);
+
+	zclient_create_header(s, ZEBRA_ADVERTISE_ALL_VNI, bgp->vrf_id);
+	stream_putc(s, advertise);
+	/* Also inform current BUM handling setting. This is really
+	 * relevant only when 'advertise' is set.
+	 */
+	stream_putc(s, bgp->vxlan_flood_ctrl);
+	stream_putw_at(s, 0, stream_get_endp(s));
+
+	return zclient_send_message(zclient);
+}
+
+int bgp_zebra_dup_addr_detection(struct bgp *bgp)
+{
+	struct stream *s;
+
+	/* Check socket. */
+	if (!zclient || zclient->sock < 0)
+		return 0;
+
+	/* Don't try to register if Zebra doesn't know of this instance. */
+	if (!IS_BGP_INST_KNOWN_TO_ZEBRA(bgp))
+		return 0;
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("dup addr detect %s max_moves %u time %u freeze %s freeze_time %u",
+			   bgp->evpn_info->dup_addr_detect ?
+			   "enable" : "disable",
+			   bgp->evpn_info->dad_max_moves,
+			   bgp->evpn_info->dad_time,
+			   bgp->evpn_info->dad_freeze ?
+			   "enable" : "disable",
+			   bgp->evpn_info->dad_freeze_time);
+
+	s = zclient->obuf;
+	stream_reset(s);
+	zclient_create_header(s, ZEBRA_DUPLICATE_ADDR_DETECTION,
+			      bgp->vrf_id);
+	stream_putl(s, bgp->evpn_info->dup_addr_detect);
+	stream_putl(s, bgp->evpn_info->dad_time);
+	stream_putl(s, bgp->evpn_info->dad_max_moves);
+	stream_putl(s, bgp->evpn_info->dad_freeze);
+	stream_putl(s, bgp->evpn_info->dad_freeze_time);
+	stream_putw_at(s, 0, stream_get_endp(s));
+
+	return zclient_send_message(zclient);
+}
+
+static int rule_notify_owner(ZAPI_CALLBACK_ARGS)
+{
+	uint32_t seqno, priority, unique;
+	enum zapi_rule_notify_owner note;
+	struct bgp_pbr_action *bgp_pbra;
+	struct bgp_pbr_rule *bgp_pbr = NULL;
+	char ifname[INTERFACE_NAMSIZ + 1];
+
+	if (!zapi_rule_notify_decode(zclient->ibuf, &seqno, &priority, &unique,
+				     ifname, &note))
+		return -1;
+
+	bgp_pbra = bgp_pbr_action_rule_lookup(vrf_id, unique);
+	if (!bgp_pbra) {
+		/* look in bgp pbr rule */
+		bgp_pbr = bgp_pbr_rule_lookup(vrf_id, unique);
+		if (!bgp_pbr && note != ZAPI_RULE_REMOVED) {
+			if (BGP_DEBUG(zebra, ZEBRA))
+				zlog_debug("%s: Fail to look BGP rule (%u)",
+					   __func__, unique);
+			return 0;
+		}
+	}
+
+	switch (note) {
+	case ZAPI_RULE_FAIL_INSTALL:
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: Received RULE_FAIL_INSTALL", __func__);
+		if (bgp_pbra) {
+			bgp_pbra->installed = false;
+			bgp_pbra->install_in_progress = false;
+		} else {
+			bgp_pbr->installed = false;
+			bgp_pbr->install_in_progress = false;
+		}
+		break;
+	case ZAPI_RULE_INSTALLED:
+		if (bgp_pbra) {
+			bgp_pbra->installed = true;
+			bgp_pbra->install_in_progress = false;
+		} else {
+			struct bgp_path_info *path;
+			struct bgp_path_info_extra *extra;
+
+			bgp_pbr->installed = true;
+			bgp_pbr->install_in_progress = false;
+			bgp_pbr->action->refcnt++;
+			/* link bgp_info to bgp_pbr */
+			path = (struct bgp_path_info *)bgp_pbr->path;
+			extra = bgp_path_info_extra_get(path);
+			if (!extra->flowspec) {
+				extra->flowspec =
+					XCALLOC(MTYPE_BGP_ROUTE_EXTRA_FS,
+						sizeof(struct bgp_path_info_extra_fs));
+				extra->flowspec->bgp_fs_iprule = NULL;
+				extra->flowspec->bgp_fs_pbr = NULL;
+			}
+			listnode_add_force(&extra->flowspec->bgp_fs_iprule, bgp_pbr);
+		}
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: Received RULE_INSTALLED", __func__);
+		break;
+	case ZAPI_RULE_FAIL_REMOVE:
+	case ZAPI_RULE_REMOVED:
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: Received RULE REMOVED", __func__);
+		break;
+	}
+
+	return 0;
+}
+
+static int ipset_notify_owner(ZAPI_CALLBACK_ARGS)
+{
+	uint32_t unique;
+	enum zapi_ipset_notify_owner note;
+	struct bgp_pbr_match *bgp_pbim;
+
+	if (!zapi_ipset_notify_decode(zclient->ibuf,
+				      &unique,
+				      &note))
+		return -1;
+
+	bgp_pbim = bgp_pbr_match_ipset_lookup(vrf_id, unique);
+	if (!bgp_pbim) {
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: Fail to look BGP match ( %u, ID %u)",
+				   __func__, note, unique);
+		return 0;
+	}
+
+	switch (note) {
+	case ZAPI_IPSET_FAIL_INSTALL:
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: Received IPSET_FAIL_INSTALL", __func__);
+		bgp_pbim->installed = false;
+		bgp_pbim->install_in_progress = false;
+		break;
+	case ZAPI_IPSET_INSTALLED:
+		bgp_pbim->installed = true;
+		bgp_pbim->install_in_progress = false;
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: Received IPSET_INSTALLED", __func__);
+		break;
+	case ZAPI_IPSET_FAIL_REMOVE:
+	case ZAPI_IPSET_REMOVED:
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: Received IPSET REMOVED", __func__);
+		break;
+	}
+
+	return 0;
+}
+
+static int ipset_entry_notify_owner(ZAPI_CALLBACK_ARGS)
+{
+	uint32_t unique;
+	char ipset_name[ZEBRA_IPSET_NAME_SIZE];
+	enum zapi_ipset_entry_notify_owner note;
+	struct bgp_pbr_match_entry *bgp_pbime;
+
+	if (!zapi_ipset_entry_notify_decode(
+				zclient->ibuf,
+				&unique,
+				ipset_name,
+				&note))
+		return -1;
+	bgp_pbime = bgp_pbr_match_ipset_entry_lookup(vrf_id,
+						     ipset_name,
+						     unique);
+	if (!bgp_pbime) {
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug(
+				"%s: Fail to look BGP match entry (%u, ID %u)",
+				__func__, note, unique);
+		return 0;
+	}
+
+	switch (note) {
+	case ZAPI_IPSET_ENTRY_FAIL_INSTALL:
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: Received IPSET_ENTRY_FAIL_INSTALL",
+				   __func__);
+		bgp_pbime->installed = false;
+		bgp_pbime->install_in_progress = false;
+		break;
+	case ZAPI_IPSET_ENTRY_INSTALLED:
+		{
+		struct bgp_path_info *path;
+		struct bgp_path_info_extra *extra;
+
+		bgp_pbime->installed = true;
+		bgp_pbime->install_in_progress = false;
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: Received IPSET_ENTRY_INSTALLED",
+				   __func__);
+		/* link bgp_path_info to bpme */
+		path = (struct bgp_path_info *)bgp_pbime->path;
+		extra = bgp_path_info_extra_get(path);
+		if (!extra->flowspec) {
+			extra->flowspec =
+				XCALLOC(MTYPE_BGP_ROUTE_EXTRA_FS,
+					sizeof(struct bgp_path_info_extra_fs));
+			extra->flowspec->bgp_fs_iprule = NULL;
+			extra->flowspec->bgp_fs_pbr = NULL;
+		}
+		listnode_add_force(&extra->flowspec->bgp_fs_pbr, bgp_pbime);
+		}
+		break;
+	case ZAPI_IPSET_ENTRY_FAIL_REMOVE:
+	case ZAPI_IPSET_ENTRY_REMOVED:
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: Received IPSET_ENTRY_REMOVED",
+				   __func__);
+		break;
+	}
+	return 0;
+}
+
+static int iptable_notify_owner(ZAPI_CALLBACK_ARGS)
+{
+	uint32_t unique;
+	enum zapi_iptable_notify_owner note;
+	struct bgp_pbr_match *bgpm;
+
+	if (!zapi_iptable_notify_decode(
+					zclient->ibuf,
+					&unique,
+					&note))
+		return -1;
+	bgpm = bgp_pbr_match_iptable_lookup(vrf_id, unique);
+	if (!bgpm) {
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: Fail to look BGP iptable (%u %u)",
+				   __func__, note, unique);
+		return 0;
+	}
+	switch (note) {
+	case ZAPI_IPTABLE_FAIL_INSTALL:
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: Received IPTABLE_FAIL_INSTALL",
+				   __func__);
+		bgpm->installed_in_iptable = false;
+		bgpm->install_iptable_in_progress = false;
+		break;
+	case ZAPI_IPTABLE_INSTALLED:
+		bgpm->installed_in_iptable = true;
+		bgpm->install_iptable_in_progress = false;
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: Received IPTABLE_INSTALLED", __func__);
+		bgpm->action->refcnt++;
+		break;
+	case ZAPI_IPTABLE_FAIL_REMOVE:
+	case ZAPI_IPTABLE_REMOVED:
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: Received IPTABLE REMOVED", __func__);
+		break;
+	}
+	return 0;
+}
+
+/* Process route notification messages from RIB */
+static int bgp_zebra_route_notify_owner(int command, struct zclient *zclient,
+					zebra_size_t length, vrf_id_t vrf_id)
+{
+	struct prefix p;
+	enum zapi_route_notify_owner note;
+	uint32_t table_id;
+	afi_t afi;
+	safi_t safi;
+	struct bgp_dest *dest;
+	struct bgp *bgp;
+	struct bgp_path_info *pi, *new_select;
+
+	if (!zapi_route_notify_decode(zclient->ibuf, &p, &table_id, &note,
+				      &afi, &safi)) {
+		zlog_err("%s : error in msg decode", __func__);
+		return -1;
+	}
+
+	/* Get the bgp instance */
+	bgp = bgp_lookup_by_vrf_id(vrf_id);
+	if (!bgp) {
+		flog_err(EC_BGP_INVALID_BGP_INSTANCE,
+			 "%s : bgp instance not found vrf %d", __func__,
+			 vrf_id);
+		return -1;
+	}
+
+	/* Find the bgp route node */
+	dest = bgp_safi_node_lookup(bgp->rib[afi][safi], safi, &p,
+				    &bgp->vrf_prd);
+	if (!dest)
+		return -1;
+
+	switch (note) {
+	case ZAPI_ROUTE_INSTALLED:
+		new_select = NULL;
+		/* Clear the flags so that route can be processed */
+		UNSET_FLAG(dest->flags, BGP_NODE_FIB_INSTALL_PENDING);
+		SET_FLAG(dest->flags, BGP_NODE_FIB_INSTALLED);
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("route %pRN : INSTALLED", (void *)dest);
+		/* Find the best route */
+		for (pi = dest->info; pi; pi = pi->next) {
+			/* Process aggregate route */
+			bgp_aggregate_increment(bgp, &p, pi, afi, safi);
+			if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED))
+				new_select = pi;
+		}
+		/* Advertise the route */
+		if (new_select)
+			group_announce_route(bgp, afi, safi, dest, new_select);
+		else {
+			flog_err(EC_BGP_INVALID_ROUTE,
+				 "selected route %pRN not found", (void *)dest);
+
+			bgp_dest_unlock_node(dest);
+			return -1;
+		}
+		break;
+	case ZAPI_ROUTE_REMOVED:
+		/* Route deleted from dataplane, reset the installed flag
+		 * so that route can be reinstalled when client sends
+		 * route add later
+		 */
+		UNSET_FLAG(dest->flags, BGP_NODE_FIB_INSTALLED);
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("route %pRN: Removed from Fib", (void *)dest);
+		break;
+	case ZAPI_ROUTE_FAIL_INSTALL:
+		new_select = NULL;
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("route: %pRN Failed to Install into Fib",
+				   (void *)dest);
+		UNSET_FLAG(dest->flags, BGP_NODE_FIB_INSTALL_PENDING);
+		UNSET_FLAG(dest->flags, BGP_NODE_FIB_INSTALLED);
+		for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) {
+			if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED))
+				new_select = pi;
+		}
+		if (new_select)
+			group_announce_route(bgp, afi, safi, dest, new_select);
+		/* Error will be logged by zebra module */
+		break;
+	case ZAPI_ROUTE_BETTER_ADMIN_WON:
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("route: %pRN removed due to better admin won",
+				   (void *)dest);
+		new_select = NULL;
+		UNSET_FLAG(dest->flags, BGP_NODE_FIB_INSTALL_PENDING);
+		UNSET_FLAG(dest->flags, BGP_NODE_FIB_INSTALLED);
+		for (pi = bgp_dest_get_bgp_path_info(dest); pi; pi = pi->next) {
+			bgp_aggregate_decrement(bgp, &p, pi, afi, safi);
+			if (CHECK_FLAG(pi->flags, BGP_PATH_SELECTED))
+				new_select = pi;
+		}
+		if (new_select)
+			group_announce_route(bgp, afi, safi, dest, new_select);
+		/* No action required */
+		break;
+	case ZAPI_ROUTE_REMOVE_FAIL:
+		zlog_warn("%s: Route %pRN failure to remove",
+			  __func__, (void *)dest);
+		break;
+	}
+
+	bgp_dest_unlock_node(dest);
+	return 0;
+}
+
+/* this function is used to forge ip rule,
+ * - either for iptable/ipset using fwmark id
+ * - or for sample ip rule cmd
+ */
+static void bgp_encode_pbr_rule_action(struct stream *s,
+				       struct bgp_pbr_action *pbra,
+				       struct bgp_pbr_rule *pbr)
+{
+	uint8_t fam = AF_INET;
+	struct pbr_rule r;
+
+	if (pbra->nh.type == NEXTHOP_TYPE_IPV6)
+		fam = AF_INET6;
+
+	/*
+	 * Convert to canonical form
+	 */
+	memset(&r, 0, sizeof(r));
+	/* r.seq unused */
+	if (pbr)
+		r.priority = pbr->priority;
+
+	/* ruleno unused - priority change
+	 * ruleno permits distinguishing various FS PBR entries
+	 * - FS PBR entries based on ipset/iptables
+	 * - FS PBR entries based on iprule
+	 * the latter may contain default routing information injected by FS
+	 */
+	if (pbr)
+		r.unique = pbr->unique;
+	else
+		r.unique = pbra->unique;
+
+	r.family = fam;
+
+	/* filter */
+
+	if (pbr && pbr->flags & MATCH_IP_SRC_SET) {
+		SET_FLAG(r.filter.filter_bm, PBR_FILTER_SRC_IP);
+		r.filter.src_ip = pbr->src;
+	} else {
+		/* ??? */
+		r.filter.src_ip.family = fam;
+	}
+	if (pbr && pbr->flags & MATCH_IP_DST_SET) {
+		SET_FLAG(r.filter.filter_bm, PBR_FILTER_DST_IP);
+		r.filter.dst_ip = pbr->dst;
+	} else {
+		/* ??? */
+		r.filter.dst_ip.family = fam;
+	}
+	/* src_port, dst_port, pcp, dsfield not used */
+	if (!pbr) {
+		SET_FLAG(r.filter.filter_bm, PBR_FILTER_FWMARK);
+		r.filter.fwmark = pbra->fwmark;
+	}
+
+	SET_FLAG(r.action.flags, PBR_ACTION_TABLE); /* always valid */
+	r.action.table = pbra->table_id;
+
+	zapi_pbr_rule_encode(s, &r);
+}
+
+static void bgp_encode_pbr_ipset_match(struct stream *s,
+				  struct bgp_pbr_match *pbim)
+{
+	stream_putl(s, pbim->unique);
+	stream_putl(s, pbim->type);
+	stream_putc(s, pbim->family);
+	stream_put(s, pbim->ipset_name,
+		   ZEBRA_IPSET_NAME_SIZE);
+}
+
+static void bgp_encode_pbr_ipset_entry_match(struct stream *s,
+				  struct bgp_pbr_match_entry *pbime)
+{
+	stream_putl(s, pbime->unique);
+	/* check that back pointer is not null */
+	stream_put(s, pbime->backpointer->ipset_name,
+		   ZEBRA_IPSET_NAME_SIZE);
+
+	stream_putc(s, pbime->src.family);
+	stream_putc(s, pbime->src.prefixlen);
+	stream_put(s, &pbime->src.u.prefix, prefix_blen(&pbime->src));
+
+	stream_putc(s, pbime->dst.family);
+	stream_putc(s, pbime->dst.prefixlen);
+	stream_put(s, &pbime->dst.u.prefix, prefix_blen(&pbime->dst));
+
+	stream_putw(s, pbime->src_port_min);
+	stream_putw(s, pbime->src_port_max);
+	stream_putw(s, pbime->dst_port_min);
+	stream_putw(s, pbime->dst_port_max);
+	stream_putc(s, pbime->proto);
+}
+
+static void bgp_encode_pbr_iptable_match(struct stream *s,
+					 struct bgp_pbr_action *bpa,
+					 struct bgp_pbr_match *pbm)
+{
+	stream_putl(s, pbm->unique2);
+
+	stream_putl(s, pbm->type);
+
+	stream_putl(s, pbm->flags);
+
+	/* TODO: correlate with what is contained
+	 * into bgp_pbr_action.
+	 * currently only forward supported
+	 */
+	if (bpa->nh.type == NEXTHOP_TYPE_BLACKHOLE)
+		stream_putl(s, ZEBRA_IPTABLES_DROP);
+	else
+		stream_putl(s, ZEBRA_IPTABLES_FORWARD);
+	stream_putl(s, bpa->fwmark);
+	stream_put(s, pbm->ipset_name,
+		   ZEBRA_IPSET_NAME_SIZE);
+	stream_putc(s, pbm->family);
+	stream_putw(s, pbm->pkt_len_min);
+	stream_putw(s, pbm->pkt_len_max);
+	stream_putw(s, pbm->tcp_flags);
+	stream_putw(s, pbm->tcp_mask_flags);
+	stream_putc(s, pbm->dscp_value);
+	stream_putc(s, pbm->fragment);
+	stream_putc(s, pbm->protocol);
+	stream_putw(s, pbm->flow_label);
+}
+
+/* BGP has established connection with Zebra. */
+static void bgp_zebra_connected(struct zclient *zclient)
+{
+	struct bgp *bgp;
+
+	zclient_num_connects++; /* increment even if not responding */
+
+	/* Send the client registration */
+	bfd_client_sendmsg(zclient, ZEBRA_BFD_CLIENT_REGISTER, VRF_DEFAULT);
+
+	/* At this point, we may or may not have BGP instances configured, but
+	 * we're only interested in the default VRF (others wouldn't have learnt
+	 * the VRF from Zebra yet.)
+	 */
+	bgp = bgp_get_default();
+	if (!bgp)
+		return;
+
+	bgp_zebra_instance_register(bgp);
+
+	/* TODO - What if we have peers and networks configured, do we have to
+	 * kick-start them?
+	 */
+	BGP_GR_ROUTER_DETECT_AND_SEND_CAPABILITY_TO_ZEBRA(bgp, bgp->peer);
+}
+
+static int bgp_zebra_process_local_es_add(ZAPI_CALLBACK_ARGS)
+{
+	esi_t esi;
+	struct bgp *bgp = NULL;
+	struct stream *s = NULL;
+	char buf[ESI_STR_LEN];
+	struct in_addr originator_ip;
+	uint8_t active;
+	uint8_t bypass;
+	uint16_t df_pref;
+
+	bgp = bgp_lookup_by_vrf_id(vrf_id);
+	if (!bgp)
+		return 0;
+
+	s = zclient->ibuf;
+	stream_get(&esi, s, sizeof(esi_t));
+	originator_ip.s_addr = stream_get_ipv4(s);
+	active = stream_getc(s);
+	df_pref = stream_getw(s);
+	bypass = stream_getc(s);
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug(
+			"Rx add ESI %s originator-ip %pI4 active %u df_pref %u %s",
+			esi_to_str(&esi, buf, sizeof(buf)), &originator_ip,
+			active, df_pref, bypass ? "bypass" : "");
+
+	frrtrace(5, frr_bgp, evpn_mh_local_es_add_zrecv, &esi, originator_ip,
+		 active, bypass, df_pref);
+
+	bgp_evpn_local_es_add(bgp, &esi, originator_ip, active, df_pref,
+			      !!bypass);
+
+	return 0;
+}
+
+static int bgp_zebra_process_local_es_del(ZAPI_CALLBACK_ARGS)
+{
+	esi_t esi;
+	struct bgp *bgp = NULL;
+	struct stream *s = NULL;
+	char buf[ESI_STR_LEN];
+
+	memset(&esi, 0, sizeof(esi_t));
+	bgp = bgp_lookup_by_vrf_id(vrf_id);
+	if (!bgp)
+		return 0;
+
+	s = zclient->ibuf;
+	stream_get(&esi, s, sizeof(esi_t));
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("Rx del ESI %s",
+				esi_to_str(&esi, buf, sizeof(buf)));
+
+	frrtrace(1, frr_bgp, evpn_mh_local_es_del_zrecv, &esi);
+
+	bgp_evpn_local_es_del(bgp, &esi);
+
+	return 0;
+}
+
+static int bgp_zebra_process_local_es_evi(ZAPI_CALLBACK_ARGS)
+{
+	esi_t esi;
+	vni_t vni;
+	struct bgp *bgp;
+	struct stream *s;
+	char buf[ESI_STR_LEN];
+
+	bgp = bgp_lookup_by_vrf_id(vrf_id);
+	if (!bgp)
+		return 0;
+
+	s = zclient->ibuf;
+	stream_get(&esi, s, sizeof(esi_t));
+	vni = stream_getl(s);
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("Rx %s ESI %s VNI %u",
+			   (cmd == ZEBRA_VNI_ADD) ? "add" : "del",
+			   esi_to_str(&esi, buf, sizeof(buf)), vni);
+
+	if (cmd == ZEBRA_LOCAL_ES_EVI_ADD) {
+		frrtrace(2, frr_bgp, evpn_mh_local_es_evi_add_zrecv, &esi, vni);
+
+		bgp_evpn_local_es_evi_add(bgp, &esi, vni);
+	} else {
+		frrtrace(2, frr_bgp, evpn_mh_local_es_evi_del_zrecv, &esi, vni);
+
+		bgp_evpn_local_es_evi_del(bgp, &esi, vni);
+	}
+
+	return 0;
+}
+
+static int bgp_zebra_process_local_l3vni(ZAPI_CALLBACK_ARGS)
+{
+	int filter = 0;
+	vni_t l3vni = 0;
+	struct ethaddr svi_rmac, vrr_rmac = {.octet = {0} };
+	struct in_addr originator_ip;
+	struct stream *s;
+	ifindex_t svi_ifindex;
+	bool is_anycast_mac = false;
+
+	memset(&svi_rmac, 0, sizeof(svi_rmac));
+	memset(&originator_ip, 0, sizeof(originator_ip));
+	s = zclient->ibuf;
+	l3vni = stream_getl(s);
+	if (cmd == ZEBRA_L3VNI_ADD) {
+		stream_get(&svi_rmac, s, sizeof(struct ethaddr));
+		originator_ip.s_addr = stream_get_ipv4(s);
+		stream_get(&filter, s, sizeof(int));
+		svi_ifindex = stream_getl(s);
+		stream_get(&vrr_rmac, s, sizeof(struct ethaddr));
+		is_anycast_mac = stream_getl(s);
+
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug(
+				"Rx L3-VNI ADD VRF %s VNI %u Originator-IP %pI4 RMAC svi-mac %pEA vrr-mac %pEA filter %s svi-if %u",
+				vrf_id_to_name(vrf_id), l3vni, &originator_ip,
+				&svi_rmac, &vrr_rmac,
+				filter ? "prefix-routes-only" : "none",
+				svi_ifindex);
+
+		frrtrace(8, frr_bgp, evpn_local_l3vni_add_zrecv, l3vni, vrf_id,
+			 &svi_rmac, &vrr_rmac, filter, originator_ip,
+			 svi_ifindex, is_anycast_mac);
+
+		bgp_evpn_local_l3vni_add(l3vni, vrf_id, &svi_rmac, &vrr_rmac,
+					 originator_ip, filter, svi_ifindex,
+					 is_anycast_mac);
+	} else {
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("Rx L3-VNI DEL VRF %s VNI %u",
+				   vrf_id_to_name(vrf_id), l3vni);
+
+		frrtrace(2, frr_bgp, evpn_local_l3vni_del_zrecv, l3vni, vrf_id);
+
+		bgp_evpn_local_l3vni_del(l3vni, vrf_id);
+	}
+
+	return 0;
+}
+
+static int bgp_zebra_process_local_vni(ZAPI_CALLBACK_ARGS)
+{
+	struct stream *s;
+	vni_t vni;
+	struct bgp *bgp;
+	struct in_addr vtep_ip = {INADDR_ANY};
+	vrf_id_t tenant_vrf_id = VRF_DEFAULT;
+	struct in_addr mcast_grp = {INADDR_ANY};
+	ifindex_t svi_ifindex = 0;
+
+	s = zclient->ibuf;
+	vni = stream_getl(s);
+	if (cmd == ZEBRA_VNI_ADD) {
+		vtep_ip.s_addr = stream_get_ipv4(s);
+		stream_get(&tenant_vrf_id, s, sizeof(vrf_id_t));
+		mcast_grp.s_addr = stream_get_ipv4(s);
+		stream_get(&svi_ifindex, s, sizeof(ifindex_t));
+	}
+
+	bgp = bgp_lookup_by_vrf_id(vrf_id);
+	if (!bgp)
+		return 0;
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug(
+			"Rx VNI %s VRF %s VNI %u tenant-vrf %s SVI ifindex %u",
+			(cmd == ZEBRA_VNI_ADD) ? "add" : "del",
+			vrf_id_to_name(vrf_id), vni,
+			vrf_id_to_name(tenant_vrf_id), svi_ifindex);
+
+	if (cmd == ZEBRA_VNI_ADD) {
+		frrtrace(4, frr_bgp, evpn_local_vni_add_zrecv, vni, vtep_ip,
+			 tenant_vrf_id, mcast_grp);
+
+		return bgp_evpn_local_vni_add(
+			bgp, vni,
+			vtep_ip.s_addr != INADDR_ANY ? vtep_ip : bgp->router_id,
+			tenant_vrf_id, mcast_grp, svi_ifindex);
+	} else {
+		frrtrace(1, frr_bgp, evpn_local_vni_del_zrecv, vni);
+
+		return bgp_evpn_local_vni_del(bgp, vni);
+	}
+}
+
+static int bgp_zebra_process_local_macip(ZAPI_CALLBACK_ARGS)
+{
+	struct stream *s;
+	vni_t vni;
+	struct bgp *bgp;
+	struct ethaddr mac;
+	struct ipaddr ip;
+	int ipa_len;
+	uint8_t flags = 0;
+	uint32_t seqnum = 0;
+	int state = 0;
+	char buf2[ESI_STR_LEN];
+	esi_t esi;
+
+	memset(&ip, 0, sizeof(ip));
+	s = zclient->ibuf;
+	vni = stream_getl(s);
+	stream_get(&mac.octet, s, ETH_ALEN);
+	ipa_len = stream_getl(s);
+	if (ipa_len != 0 && ipa_len != IPV4_MAX_BYTELEN
+	    && ipa_len != IPV6_MAX_BYTELEN) {
+		flog_err(EC_BGP_MACIP_LEN,
+			 "%u:Recv MACIP %s with invalid IP addr length %d",
+			 vrf_id, (cmd == ZEBRA_MACIP_ADD) ? "Add" : "Del",
+			 ipa_len);
+		return -1;
+	}
+
+	if (ipa_len) {
+		ip.ipa_type =
+			(ipa_len == IPV4_MAX_BYTELEN) ? IPADDR_V4 : IPADDR_V6;
+		stream_get(&ip.ip.addr, s, ipa_len);
+	}
+	if (cmd == ZEBRA_MACIP_ADD) {
+		flags = stream_getc(s);
+		seqnum = stream_getl(s);
+		stream_get(&esi, s, sizeof(esi_t));
+	} else {
+		state = stream_getl(s);
+		memset(&esi, 0, sizeof(esi_t));
+	}
+
+	bgp = bgp_lookup_by_vrf_id(vrf_id);
+	if (!bgp)
+		return 0;
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug(
+			"%u:Recv MACIP %s f 0x%x MAC %pEA IP %pIA VNI %u seq %u state %d ESI %s",
+			vrf_id, (cmd == ZEBRA_MACIP_ADD) ? "Add" : "Del", flags,
+			&mac, &ip, vni, seqnum, state,
+			esi_to_str(&esi, buf2, sizeof(buf2)));
+
+	if (cmd == ZEBRA_MACIP_ADD) {
+		frrtrace(6, frr_bgp, evpn_local_macip_add_zrecv, vni, &mac, &ip,
+			 flags, seqnum, &esi);
+
+		return bgp_evpn_local_macip_add(bgp, vni, &mac, &ip,
+						flags, seqnum, &esi);
+	} else {
+		frrtrace(4, frr_bgp, evpn_local_macip_del_zrecv, vni, &mac, &ip,
+			 state);
+
+		return bgp_evpn_local_macip_del(bgp, vni, &mac, &ip, state);
+	}
+}
+
+static int bgp_zebra_process_local_ip_prefix(ZAPI_CALLBACK_ARGS)
+{
+	struct stream *s = NULL;
+	struct bgp *bgp_vrf = NULL;
+	struct prefix p;
+
+	memset(&p, 0, sizeof(p));
+	s = zclient->ibuf;
+	stream_get(&p, s, sizeof(struct prefix));
+
+	bgp_vrf = bgp_lookup_by_vrf_id(vrf_id);
+	if (!bgp_vrf)
+		return 0;
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("Recv prefix %pFX %s on vrf %s", &p,
+			   (cmd == ZEBRA_IP_PREFIX_ROUTE_ADD) ? "ADD" : "DEL",
+			   vrf_id_to_name(vrf_id));
+
+	if (cmd == ZEBRA_IP_PREFIX_ROUTE_ADD) {
+
+		if (p.family == AF_INET)
+			bgp_evpn_advertise_type5_route(bgp_vrf, &p, NULL,
+						       AFI_IP, SAFI_UNICAST);
+		else
+			bgp_evpn_advertise_type5_route(bgp_vrf, &p, NULL,
+						       AFI_IP6, SAFI_UNICAST);
+
+	} else {
+		if (p.family == AF_INET)
+			bgp_evpn_withdraw_type5_route(bgp_vrf, &p, AFI_IP,
+						      SAFI_UNICAST);
+		else
+			bgp_evpn_withdraw_type5_route(bgp_vrf, &p, AFI_IP6,
+						      SAFI_UNICAST);
+	}
+	return 0;
+}
+
+extern struct zebra_privs_t bgpd_privs;
+
+static int bgp_ifp_create(struct interface *ifp)
+{
+	struct bgp *bgp;
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("Rx Intf add VRF %u IF %s", ifp->vrf->vrf_id,
+			   ifp->name);
+
+	bgp = ifp->vrf->info;
+	if (!bgp)
+		return 0;
+
+	bgp_mac_add_mac_entry(ifp);
+
+	bgp_update_interface_nbrs(bgp, ifp, ifp);
+	hook_call(bgp_vrf_status_changed, bgp, ifp);
+	return 0;
+}
+
+static int bgp_zebra_process_srv6_locator_chunk(ZAPI_CALLBACK_ARGS)
+{
+	struct stream *s = NULL;
+	struct bgp *bgp = bgp_get_default();
+	struct listnode *node;
+	struct srv6_locator_chunk *c;
+	struct srv6_locator_chunk *chunk = srv6_locator_chunk_alloc();
+
+	s = zclient->ibuf;
+	zapi_srv6_locator_chunk_decode(s, chunk);
+
+	if (strcmp(bgp->srv6_locator_name, chunk->locator_name) != 0) {
+		zlog_err("%s: Locator name unmatch %s:%s", __func__,
+			 bgp->srv6_locator_name, chunk->locator_name);
+		srv6_locator_chunk_free(&chunk);
+		return 0;
+	}
+
+	for (ALL_LIST_ELEMENTS_RO(bgp->srv6_locator_chunks, node, c)) {
+		if (!prefix_cmp(&c->prefix, &chunk->prefix)) {
+			srv6_locator_chunk_free(&chunk);
+			return 0;
+		}
+	}
+
+	listnode_add(bgp->srv6_locator_chunks, chunk);
+	vpn_leak_postchange_all();
+	return 0;
+}
+
+static int bgp_zebra_process_srv6_locator_add(ZAPI_CALLBACK_ARGS)
+{
+	struct srv6_locator loc = {};
+	struct bgp *bgp = bgp_get_default();
+	const char *loc_name = bgp->srv6_locator_name;
+
+	if (zapi_srv6_locator_decode(zclient->ibuf, &loc) < 0)
+		return -1;
+
+	if (!bgp || !bgp->srv6_enabled)
+		return 0;
+
+	if (bgp_zebra_srv6_manager_get_locator_chunk(loc_name) < 0)
+		return -1;
+
+	return 0;
+}
+
+static int bgp_zebra_process_srv6_locator_delete(ZAPI_CALLBACK_ARGS)
+{
+	struct srv6_locator loc = {};
+	struct bgp *bgp = bgp_get_default();
+	struct listnode *node, *nnode;
+	struct srv6_locator_chunk *chunk, *tovpn_sid_locator;
+	struct bgp_srv6_function *func;
+	struct bgp *bgp_vrf;
+	struct in6_addr *tovpn_sid;
+	struct prefix_ipv6 tmp_prefi;
+
+	if (zapi_srv6_locator_decode(zclient->ibuf, &loc) < 0)
+		return -1;
+
+	// refresh chunks
+	for (ALL_LIST_ELEMENTS(bgp->srv6_locator_chunks, node, nnode, chunk))
+		if (prefix_match((struct prefix *)&loc.prefix,
+				 (struct prefix *)&chunk->prefix)) {
+			listnode_delete(bgp->srv6_locator_chunks, chunk);
+			srv6_locator_chunk_free(&chunk);
+		}
+
+	// refresh functions
+	for (ALL_LIST_ELEMENTS(bgp->srv6_functions, node, nnode, func)) {
+		tmp_prefi.family = AF_INET6;
+		tmp_prefi.prefixlen = 128;
+		tmp_prefi.prefix = func->sid;
+		if (prefix_match((struct prefix *)&loc.prefix,
+				 (struct prefix *)&tmp_prefi)) {
+			listnode_delete(bgp->srv6_functions, func);
+			XFREE(MTYPE_BGP_SRV6_FUNCTION, func);
+		}
+	}
+
+	// refresh tovpn_sid
+	for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) {
+		if (bgp_vrf->inst_type != BGP_INSTANCE_TYPE_VRF)
+			continue;
+
+		// refresh vpnv4 tovpn_sid
+		tovpn_sid = bgp_vrf->vpn_policy[AFI_IP].tovpn_sid;
+		if (tovpn_sid) {
+			tmp_prefi.family = AF_INET6;
+			tmp_prefi.prefixlen = 128;
+			tmp_prefi.prefix = *tovpn_sid;
+			if (prefix_match((struct prefix *)&loc.prefix,
+					 (struct prefix *)&tmp_prefi))
+				XFREE(MTYPE_BGP_SRV6_SID,
+				      bgp_vrf->vpn_policy[AFI_IP].tovpn_sid);
+		}
+
+		// refresh vpnv6 tovpn_sid
+		tovpn_sid = bgp_vrf->vpn_policy[AFI_IP6].tovpn_sid;
+		if (tovpn_sid) {
+			tmp_prefi.family = AF_INET6;
+			tmp_prefi.prefixlen = 128;
+			tmp_prefi.prefix = *tovpn_sid;
+			if (prefix_match((struct prefix *)&loc.prefix,
+					 (struct prefix *)&tmp_prefi))
+				XFREE(MTYPE_BGP_SRV6_SID,
+				      bgp_vrf->vpn_policy[AFI_IP6].tovpn_sid);
+		}
+
+		/* refresh per-vrf tovpn_sid */
+		tovpn_sid = bgp_vrf->tovpn_sid;
+		if (tovpn_sid) {
+			tmp_prefi.family = AF_INET6;
+			tmp_prefi.prefixlen = IPV6_MAX_BITLEN;
+			tmp_prefi.prefix = *tovpn_sid;
+			if (prefix_match((struct prefix *)&loc.prefix,
+					 (struct prefix *)&tmp_prefi))
+				XFREE(MTYPE_BGP_SRV6_SID, bgp_vrf->tovpn_sid);
+		}
+	}
+
+	vpn_leak_postchange_all();
+
+	/* refresh tovpn_sid_locator */
+	for (ALL_LIST_ELEMENTS_RO(bm->bgp, node, bgp_vrf)) {
+		if (bgp_vrf->inst_type != BGP_INSTANCE_TYPE_VRF)
+			continue;
+
+		/* refresh vpnv4 tovpn_sid_locator */
+		tovpn_sid_locator =
+			bgp_vrf->vpn_policy[AFI_IP].tovpn_sid_locator;
+		if (tovpn_sid_locator) {
+			tmp_prefi.family = AF_INET6;
+			tmp_prefi.prefixlen = IPV6_MAX_BITLEN;
+			tmp_prefi.prefix = tovpn_sid_locator->prefix.prefix;
+			if (prefix_match((struct prefix *)&loc.prefix,
+					 (struct prefix *)&tmp_prefi))
+				srv6_locator_chunk_free(
+					&bgp_vrf->vpn_policy[AFI_IP]
+						 .tovpn_sid_locator);
+		}
+
+		/* refresh vpnv6 tovpn_sid_locator */
+		tovpn_sid_locator =
+			bgp_vrf->vpn_policy[AFI_IP6].tovpn_sid_locator;
+		if (tovpn_sid_locator) {
+			tmp_prefi.family = AF_INET6;
+			tmp_prefi.prefixlen = IPV6_MAX_BITLEN;
+			tmp_prefi.prefix = tovpn_sid_locator->prefix.prefix;
+			if (prefix_match((struct prefix *)&loc.prefix,
+					 (struct prefix *)&tmp_prefi))
+				srv6_locator_chunk_free(
+					&bgp_vrf->vpn_policy[AFI_IP6]
+						 .tovpn_sid_locator);
+		}
+
+		/* refresh per-vrf tovpn_sid_locator */
+		tovpn_sid_locator = bgp_vrf->tovpn_sid_locator;
+		if (tovpn_sid_locator) {
+			tmp_prefi.family = AF_INET6;
+			tmp_prefi.prefixlen = IPV6_MAX_BITLEN;
+			tmp_prefi.prefix = tovpn_sid_locator->prefix.prefix;
+			if (prefix_match((struct prefix *)&loc.prefix,
+					 (struct prefix *)&tmp_prefi))
+				srv6_locator_chunk_free(
+					&bgp_vrf->tovpn_sid_locator);
+		}
+	}
+
+	return 0;
+}
+
+static zclient_handler *const bgp_handlers[] = {
+	[ZEBRA_ROUTER_ID_UPDATE] = bgp_router_id_update,
+	[ZEBRA_INTERFACE_ADDRESS_ADD] = bgp_interface_address_add,
+	[ZEBRA_INTERFACE_ADDRESS_DELETE] = bgp_interface_address_delete,
+	[ZEBRA_INTERFACE_NBR_ADDRESS_ADD] = bgp_interface_nbr_address_add,
+	[ZEBRA_INTERFACE_NBR_ADDRESS_DELETE] = bgp_interface_nbr_address_delete,
+	[ZEBRA_REDISTRIBUTE_ROUTE_ADD] = zebra_read_route,
+	[ZEBRA_REDISTRIBUTE_ROUTE_DEL] = zebra_read_route,
+	[ZEBRA_NEXTHOP_UPDATE] = bgp_read_nexthop_update,
+	[ZEBRA_FEC_UPDATE] = bgp_read_fec_update,
+	[ZEBRA_LOCAL_ES_ADD] = bgp_zebra_process_local_es_add,
+	[ZEBRA_LOCAL_ES_DEL] = bgp_zebra_process_local_es_del,
+	[ZEBRA_VNI_ADD] = bgp_zebra_process_local_vni,
+	[ZEBRA_LOCAL_ES_EVI_ADD] = bgp_zebra_process_local_es_evi,
+	[ZEBRA_LOCAL_ES_EVI_DEL] = bgp_zebra_process_local_es_evi,
+	[ZEBRA_VNI_DEL] = bgp_zebra_process_local_vni,
+	[ZEBRA_MACIP_ADD] = bgp_zebra_process_local_macip,
+	[ZEBRA_MACIP_DEL] = bgp_zebra_process_local_macip,
+	[ZEBRA_L3VNI_ADD] = bgp_zebra_process_local_l3vni,
+	[ZEBRA_L3VNI_DEL] = bgp_zebra_process_local_l3vni,
+	[ZEBRA_IP_PREFIX_ROUTE_ADD] = bgp_zebra_process_local_ip_prefix,
+	[ZEBRA_IP_PREFIX_ROUTE_DEL] = bgp_zebra_process_local_ip_prefix,
+	[ZEBRA_RULE_NOTIFY_OWNER] = rule_notify_owner,
+	[ZEBRA_IPSET_NOTIFY_OWNER] = ipset_notify_owner,
+	[ZEBRA_IPSET_ENTRY_NOTIFY_OWNER] = ipset_entry_notify_owner,
+	[ZEBRA_IPTABLE_NOTIFY_OWNER] = iptable_notify_owner,
+	[ZEBRA_ROUTE_NOTIFY_OWNER] = bgp_zebra_route_notify_owner,
+	[ZEBRA_SRV6_LOCATOR_ADD] = bgp_zebra_process_srv6_locator_add,
+	[ZEBRA_SRV6_LOCATOR_DELETE] = bgp_zebra_process_srv6_locator_delete,
+	[ZEBRA_SRV6_MANAGER_GET_LOCATOR_CHUNK] =
+		bgp_zebra_process_srv6_locator_chunk,
+};
+
+static int bgp_if_new_hook(struct interface *ifp)
+{
+	struct bgp_interface *iifp;
+
+	if (ifp->info)
+		return 0;
+	iifp = XCALLOC(MTYPE_BGP_IF_INFO, sizeof(struct bgp_interface));
+	ifp->info = iifp;
+
+	return 0;
+}
+
+static int bgp_if_delete_hook(struct interface *ifp)
+{
+	XFREE(MTYPE_BGP_IF_INFO, ifp->info);
+	return 0;
+}
+
+void bgp_if_init(void)
+{
+	/* Initialize Zebra interface data structure. */
+	hook_register_prio(if_add, 0, bgp_if_new_hook);
+	hook_register_prio(if_del, 0, bgp_if_delete_hook);
+}
+
+static void bgp_start_label_manager(struct event *start)
+{
+	bgp_zebra_label_manager_connect();
+}
+
+static bool bgp_zebra_label_manager_ready(void)
+{
+	return (zclient_sync->sock > 0);
+}
+
+static bool bgp_zebra_label_manager_connect(void)
+{
+	/* Connect to label manager. */
+	if (zclient_socket_connect(zclient_sync) < 0) {
+		zlog_warn("%s: failed connecting synchronous zclient!",
+			  __func__);
+		return false;
+	}
+	/* make socket non-blocking */
+	set_nonblocking(zclient_sync->sock);
+
+	/* Send hello to notify zebra this is a synchronous client */
+	if (zclient_send_hello(zclient_sync) == ZCLIENT_SEND_FAILURE) {
+		zlog_warn("%s: failed sending hello for synchronous zclient!",
+			  __func__);
+		close(zclient_sync->sock);
+		zclient_sync->sock = -1;
+		return false;
+	}
+
+	/* Connect to label manager */
+	if (lm_label_manager_connect(zclient_sync, 0) != 0) {
+		zlog_warn("%s: failed connecting to label manager!", __func__);
+		if (zclient_sync->sock > 0) {
+			close(zclient_sync->sock);
+			zclient_sync->sock = -1;
+		}
+		return false;
+	}
+
+	/* tell label pool that zebra is connected */
+	bgp_lp_event_zebra_up();
+
+	return true;
+}
+
+static void bgp_zebra_capabilities(struct zclient_capabilities *cap)
+{
+	bm->v6_with_v4_nexthops = cap->v6_with_v4_nexthop;
+}
+
+void bgp_zebra_init(struct event_loop *master, unsigned short instance)
+{
+	struct zclient_options options = zclient_options_default;
+
+	options.synchronous = true;
+	zclient_num_connects = 0;
+
+	if_zapi_callbacks(bgp_ifp_create, bgp_ifp_up,
+			  bgp_ifp_down, bgp_ifp_destroy);
+
+	/* Set default values. */
+	zclient = zclient_new(master, &zclient_options_default, bgp_handlers,
+			      array_size(bgp_handlers));
+	zclient_init(zclient, ZEBRA_ROUTE_BGP, 0, &bgpd_privs);
+	zclient->zebra_connected = bgp_zebra_connected;
+	zclient->zebra_capabilities = bgp_zebra_capabilities;
+	zclient->instance = instance;
+
+	/* Initialize special zclient for synchronous message exchanges. */
+	zclient_sync = zclient_new(master, &options, NULL, 0);
+	zclient_sync->sock = -1;
+	zclient_sync->redist_default = ZEBRA_ROUTE_BGP;
+	zclient_sync->instance = instance;
+	zclient_sync->session_id = 1;
+	zclient_sync->privs = &bgpd_privs;
+
+	if (!bgp_zebra_label_manager_ready())
+		event_add_timer(master, bgp_start_label_manager, NULL, 1,
+				&bm->t_bgp_start_label_manager);
+}
+
+void bgp_zebra_destroy(void)
+{
+	if (zclient == NULL)
+		return;
+	zclient_stop(zclient);
+	zclient_free(zclient);
+	zclient = NULL;
+
+	if (zclient_sync == NULL)
+		return;
+	zclient_stop(zclient_sync);
+	zclient_free(zclient_sync);
+	zclient_sync = NULL;
+}
+
+int bgp_zebra_num_connects(void)
+{
+	return zclient_num_connects;
+}
+
+void bgp_send_pbr_rule_action(struct bgp_pbr_action *pbra,
+			      struct bgp_pbr_rule *pbr,
+			      bool install)
+{
+	struct stream *s;
+
+	if (pbra->install_in_progress && !pbr)
+		return;
+	if (pbr && pbr->install_in_progress)
+		return;
+	if (BGP_DEBUG(zebra, ZEBRA)) {
+		if (pbr)
+			zlog_debug("%s: table %d (ip rule) %d", __func__,
+				   pbra->table_id, install);
+		else
+			zlog_debug("%s: table %d fwmark %d %d", __func__,
+				   pbra->table_id, pbra->fwmark, install);
+	}
+	s = zclient->obuf;
+	stream_reset(s);
+
+	zclient_create_header(s,
+			      install ? ZEBRA_RULE_ADD : ZEBRA_RULE_DELETE,
+			      VRF_DEFAULT);
+
+	bgp_encode_pbr_rule_action(s, pbra, pbr);
+
+	if ((zclient_send_message(zclient) != ZCLIENT_SEND_FAILURE)
+	    && install) {
+		if (!pbr)
+			pbra->install_in_progress = true;
+		else
+			pbr->install_in_progress = true;
+	}
+}
+
+void bgp_send_pbr_ipset_match(struct bgp_pbr_match *pbrim, bool install)
+{
+	struct stream *s;
+
+	if (pbrim->install_in_progress)
+		return;
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("%s: name %s type %d %d, ID %u", __func__,
+			   pbrim->ipset_name, pbrim->type, install,
+			   pbrim->unique);
+	s = zclient->obuf;
+	stream_reset(s);
+
+	zclient_create_header(s,
+			      install ? ZEBRA_IPSET_CREATE :
+			      ZEBRA_IPSET_DESTROY,
+			      VRF_DEFAULT);
+
+	stream_putl(s, 1); /* send one pbr action */
+
+	bgp_encode_pbr_ipset_match(s, pbrim);
+
+	stream_putw_at(s, 0, stream_get_endp(s));
+	if ((zclient_send_message(zclient) != ZCLIENT_SEND_FAILURE) && install)
+		pbrim->install_in_progress = true;
+}
+
+void bgp_send_pbr_ipset_entry_match(struct bgp_pbr_match_entry *pbrime,
+				    bool install)
+{
+	struct stream *s;
+
+	if (pbrime->install_in_progress)
+		return;
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("%s: name %s %d %d, ID %u", __func__,
+			   pbrime->backpointer->ipset_name, pbrime->unique,
+			   install, pbrime->unique);
+	s = zclient->obuf;
+	stream_reset(s);
+
+	zclient_create_header(s,
+			      install ? ZEBRA_IPSET_ENTRY_ADD :
+			      ZEBRA_IPSET_ENTRY_DELETE,
+			      VRF_DEFAULT);
+
+	stream_putl(s, 1); /* send one pbr action */
+
+	bgp_encode_pbr_ipset_entry_match(s, pbrime);
+
+	stream_putw_at(s, 0, stream_get_endp(s));
+	if ((zclient_send_message(zclient) != ZCLIENT_SEND_FAILURE) && install)
+		pbrime->install_in_progress = true;
+}
+
+static void bgp_encode_pbr_interface_list(struct bgp *bgp, struct stream *s,
+					  uint8_t family)
+{
+	struct bgp_pbr_config *bgp_pbr_cfg = bgp->bgp_pbr_cfg;
+	struct bgp_pbr_interface_head *head;
+	struct bgp_pbr_interface *pbr_if;
+	struct interface *ifp;
+
+	if (!bgp_pbr_cfg)
+		return;
+	if (family == AF_INET)
+		head = &(bgp_pbr_cfg->ifaces_by_name_ipv4);
+	else
+		head = &(bgp_pbr_cfg->ifaces_by_name_ipv6);
+	RB_FOREACH (pbr_if, bgp_pbr_interface_head, head) {
+		ifp = if_lookup_by_name(pbr_if->name, bgp->vrf_id);
+		if (ifp)
+			stream_putl(s, ifp->ifindex);
+	}
+}
+
+static int bgp_pbr_get_ifnumber(struct bgp *bgp, uint8_t family)
+{
+	struct bgp_pbr_config *bgp_pbr_cfg = bgp->bgp_pbr_cfg;
+	struct bgp_pbr_interface_head *head;
+	struct bgp_pbr_interface *pbr_if;
+	int cnt = 0;
+
+	if (!bgp_pbr_cfg)
+		return 0;
+	if (family == AF_INET)
+		head = &(bgp_pbr_cfg->ifaces_by_name_ipv4);
+	else
+		head = &(bgp_pbr_cfg->ifaces_by_name_ipv6);
+	RB_FOREACH (pbr_if, bgp_pbr_interface_head, head) {
+		if (if_lookup_by_name(pbr_if->name, bgp->vrf_id))
+			cnt++;
+	}
+	return cnt;
+}
+
+void bgp_send_pbr_iptable(struct bgp_pbr_action *pba,
+			  struct bgp_pbr_match *pbm,
+			  bool install)
+{
+	struct stream *s;
+	int ret = 0;
+	int nb_interface;
+
+	if (pbm->install_iptable_in_progress)
+		return;
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("%s: name %s type %d mark %d %d, ID %u", __func__,
+			   pbm->ipset_name, pbm->type, pba->fwmark, install,
+			   pbm->unique2);
+	s = zclient->obuf;
+	stream_reset(s);
+
+	zclient_create_header(s,
+			      install ? ZEBRA_IPTABLE_ADD :
+			      ZEBRA_IPTABLE_DELETE,
+			      VRF_DEFAULT);
+
+	bgp_encode_pbr_iptable_match(s, pba, pbm);
+	nb_interface = bgp_pbr_get_ifnumber(pba->bgp, pbm->family);
+	stream_putl(s, nb_interface);
+	if (nb_interface)
+		bgp_encode_pbr_interface_list(pba->bgp, s, pbm->family);
+	stream_putw_at(s, 0, stream_get_endp(s));
+	ret = zclient_send_message(zclient);
+	if (install) {
+		if (ret != ZCLIENT_SEND_FAILURE)
+			pba->refcnt++;
+		else
+			pbm->install_iptable_in_progress = true;
+	}
+}
+
+/* inject in table <table_id> a default route to:
+ * - if nexthop IP is present : to this nexthop
+ * - if vrf is different from local : to the matching VRF
+ */
+void bgp_zebra_announce_default(struct bgp *bgp, struct nexthop *nh,
+				afi_t afi, uint32_t table_id, bool announce)
+{
+	struct zapi_nexthop *api_nh;
+	struct zapi_route api;
+	struct prefix p;
+
+	if (!nh || (nh->type != NEXTHOP_TYPE_IPV4
+		    && nh->type != NEXTHOP_TYPE_IPV6)
+	    || nh->vrf_id == VRF_UNKNOWN)
+		return;
+
+	/* in vrf-lite, no default route has to be announced
+	 * the table id of vrf is directly used to divert traffic
+	 */
+	if (!vrf_is_backend_netns() && bgp->vrf_id != nh->vrf_id)
+		return;
+
+	memset(&p, 0, sizeof(p));
+	if (afi != AFI_IP && afi != AFI_IP6)
+		return;
+	p.family = afi2family(afi);
+	memset(&api, 0, sizeof(api));
+	api.vrf_id = bgp->vrf_id;
+	api.type = ZEBRA_ROUTE_BGP;
+	api.safi = SAFI_UNICAST;
+	api.prefix = p;
+	api.tableid = table_id;
+	api.nexthop_num = 1;
+	SET_FLAG(api.message, ZAPI_MESSAGE_TABLEID);
+	SET_FLAG(api.message, ZAPI_MESSAGE_NEXTHOP);
+	api_nh = &api.nexthops[0];
+
+	api.distance = ZEBRA_EBGP_DISTANCE_DEFAULT;
+	SET_FLAG(api.message, ZAPI_MESSAGE_DISTANCE);
+
+	api_nh->vrf_id = nh->vrf_id;
+
+	if (BGP_DEBUG(zebra, ZEBRA)) {
+		struct vrf *vrf;
+
+		vrf = vrf_lookup_by_id(nh->vrf_id);
+		zlog_debug("%s: %s default route to %pNHvv(%s) table %d",
+			   bgp->name_pretty, announce ? "adding" : "withdrawing",
+			   nh, VRF_LOGNAME(vrf), table_id);
+	}
+
+	/* redirect IP */
+	if (afi == AFI_IP && nh->gate.ipv4.s_addr != INADDR_ANY) {
+		api_nh->gate.ipv4 = nh->gate.ipv4;
+		api_nh->type = NEXTHOP_TYPE_IPV4;
+	} else if (afi == AFI_IP6 && memcmp(&nh->gate.ipv6, &in6addr_any,
+					    sizeof(struct in6_addr))) {
+		memcpy(&api_nh->gate.ipv6, &nh->gate.ipv6,
+		       sizeof(struct in6_addr));
+		api_nh->type = NEXTHOP_TYPE_IPV6;
+	} else if (nh->vrf_id != bgp->vrf_id) {
+		struct vrf *vrf;
+		struct interface *ifp;
+
+		vrf = vrf_lookup_by_id(nh->vrf_id);
+		if (!vrf)
+			return;
+		/* create default route with interface <VRF>
+		 * with nexthop-vrf <VRF>
+		 */
+		ifp = if_lookup_by_name_vrf(vrf->name, vrf);
+		if (!ifp)
+			return;
+		api_nh->type = NEXTHOP_TYPE_IFINDEX;
+		api_nh->ifindex = ifp->ifindex;
+	}
+
+	zclient_route_send(announce ? ZEBRA_ROUTE_ADD : ZEBRA_ROUTE_DELETE,
+			   zclient, &api);
+}
+
+/* Send capabilities to RIB */
+int bgp_zebra_send_capabilities(struct bgp *bgp, bool disable)
+{
+	struct zapi_cap api;
+	int ret = BGP_GR_SUCCESS;
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("%s: Sending %sable for %s", __func__,
+			   disable ? "dis" : "en", bgp->name_pretty);
+
+	if (zclient == NULL) {
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: %s zclient invalid", __func__,
+				   bgp->name_pretty);
+		return BGP_GR_FAILURE;
+	}
+
+	/* Check if the client is connected */
+	if ((zclient->sock < 0) || (zclient->t_connect)) {
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: %s client not connected", __func__,
+				   bgp->name_pretty);
+		return BGP_GR_FAILURE;
+	}
+
+	/* Check if capability is already sent. If the flag force is set
+	 * send the capability since this can be initial bgp configuration
+	 */
+	memset(&api, 0, sizeof(api));
+	if (disable) {
+		api.cap = ZEBRA_CLIENT_GR_DISABLE;
+		api.vrf_id = bgp->vrf_id;
+	} else {
+		api.cap = ZEBRA_CLIENT_GR_CAPABILITIES;
+		api.stale_removal_time = bgp->rib_stale_time;
+		api.vrf_id = bgp->vrf_id;
+	}
+
+	if (zclient_capabilities_send(ZEBRA_CLIENT_CAPABILITIES, zclient, &api)
+	    == ZCLIENT_SEND_FAILURE) {
+		zlog_err("%s: %s error sending capability", __func__,
+			 bgp->name_pretty);
+		ret = BGP_GR_FAILURE;
+	} else {
+		if (disable)
+			bgp->present_zebra_gr_state = ZEBRA_GR_DISABLE;
+		else
+			bgp->present_zebra_gr_state = ZEBRA_GR_ENABLE;
+
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: %s send capabilty success", __func__,
+				   bgp->name_pretty);
+		ret = BGP_GR_SUCCESS;
+	}
+	return ret;
+}
+
+/* Send route update pesding or completed status to RIB for the
+ * specific AFI, SAFI
+ */
+int bgp_zebra_update(struct bgp *bgp, afi_t afi, safi_t safi,
+		     enum zserv_client_capabilities type)
+{
+	struct zapi_cap api = {0};
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("%s: %s afi: %u safi: %u Command %s", __func__,
+			   bgp->name_pretty, afi, safi,
+			   zserv_gr_client_cap_string(type));
+
+	if (zclient == NULL) {
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: %s zclient == NULL, invalid", __func__,
+				   bgp->name_pretty);
+		return BGP_GR_FAILURE;
+	}
+
+	/* Check if the client is connected */
+	if ((zclient->sock < 0) || (zclient->t_connect)) {
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: %s client not connected", __func__,
+				   bgp->name_pretty);
+		return BGP_GR_FAILURE;
+	}
+
+	api.afi = afi;
+	api.safi = safi;
+	api.vrf_id = bgp->vrf_id;
+	api.cap = type;
+
+	if (zclient_capabilities_send(ZEBRA_CLIENT_CAPABILITIES, zclient, &api)
+	    == ZCLIENT_SEND_FAILURE) {
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: %s error sending capability", __func__,
+				   bgp->name_pretty);
+		return BGP_GR_FAILURE;
+	}
+	return BGP_GR_SUCCESS;
+}
+
+
+/* Send RIB stale timer update */
+int bgp_zebra_stale_timer_update(struct bgp *bgp)
+{
+	struct zapi_cap api;
+
+	if (BGP_DEBUG(zebra, ZEBRA))
+		zlog_debug("%s: %s Timer Update to %u", __func__,
+			   bgp->name_pretty, bgp->rib_stale_time);
+
+	if (zclient == NULL) {
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("zclient invalid");
+		return BGP_GR_FAILURE;
+	}
+
+	/* Check if the client is connected */
+	if ((zclient->sock < 0) || (zclient->t_connect)) {
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: %s client not connected", __func__,
+				   bgp->name_pretty);
+		return BGP_GR_FAILURE;
+	}
+
+	memset(&api, 0, sizeof(api));
+	api.cap = ZEBRA_CLIENT_RIB_STALE_TIME;
+	api.stale_removal_time = bgp->rib_stale_time;
+	api.vrf_id = bgp->vrf_id;
+	if (zclient_capabilities_send(ZEBRA_CLIENT_CAPABILITIES, zclient, &api)
+	    == ZCLIENT_SEND_FAILURE) {
+		if (BGP_DEBUG(zebra, ZEBRA))
+			zlog_debug("%s: %s error sending capability", __func__,
+				   bgp->name_pretty);
+		return BGP_GR_FAILURE;
+	}
+
+	return BGP_GR_SUCCESS;
+}
+
+int bgp_zebra_srv6_manager_get_locator_chunk(const char *name)
+{
+	return srv6_manager_get_locator_chunk(zclient, name);
+}
+
+int bgp_zebra_srv6_manager_release_locator_chunk(const char *name)
+{
+	return srv6_manager_release_locator_chunk(zclient, name);
+}
+
+void bgp_zebra_send_nexthop_label(int cmd, mpls_label_t label,
+				  ifindex_t ifindex, vrf_id_t vrf_id,
+				  enum lsp_types_t ltype, struct prefix *p,
+				  uint32_t num_labels,
+				  mpls_label_t out_labels[])
+{
+	struct zapi_labels zl = {};
+	struct zapi_nexthop *znh;
+	int i = 0;
+
+	zl.type = ltype;
+	zl.local_label = label;
+	zl.nexthop_num = 1;
+	znh = &zl.nexthops[0];
+	if (p->family == AF_INET)
+		IPV4_ADDR_COPY(&znh->gate.ipv4, &p->u.prefix4);
+	else
+		IPV6_ADDR_COPY(&znh->gate.ipv6, &p->u.prefix6);
+	if (ifindex == IFINDEX_INTERNAL)
+		znh->type = (p->family == AF_INET) ? NEXTHOP_TYPE_IPV4
+						   : NEXTHOP_TYPE_IPV6;
+	else
+		znh->type = (p->family == AF_INET) ? NEXTHOP_TYPE_IPV4_IFINDEX
+						   : NEXTHOP_TYPE_IPV6_IFINDEX;
+	znh->ifindex = ifindex;
+	znh->vrf_id = vrf_id;
+	if (num_labels == 0)
+		znh->label_num = 0;
+	else {
+		if (num_labels > MPLS_MAX_LABELS)
+			znh->label_num = MPLS_MAX_LABELS;
+		else
+			znh->label_num = num_labels;
+		for (i = 0; i < znh->label_num; i++)
+			znh->labels[i] = out_labels[i];
+	}
+	/* vrf_id is DEFAULT_VRF */
+	zebra_send_mpls_labels(zclient, cmd, &zl);
+}
+
+bool bgp_zebra_request_label_range(uint32_t base, uint32_t chunk_size)
+{
+	int ret;
+	uint32_t start, end;
+
+	if (!zclient_sync || !bgp_zebra_label_manager_ready())
+		return false;
+
+	ret = lm_get_label_chunk(zclient_sync, 0, base, chunk_size, &start,
+				 &end);
+	if (ret < 0) {
+		zlog_warn("%s: error getting label range!", __func__);
+		return false;
+	}
+
+	if (start > end || start < MPLS_LABEL_UNRESERVED_MIN ||
+	    end > MPLS_LABEL_UNRESERVED_MAX) {
+		flog_err(EC_BGP_LM_ERROR, "%s: Invalid Label chunk: %u - %u",
+			 __func__, start, end);
+		return false;
+	}
+
+	bgp_lp_event_chunk(start, end);
+
+	return true;
+}
+
+void bgp_zebra_release_label_range(uint32_t start, uint32_t end)
+{
+	int ret;
+
+	if (!zclient_sync || !bgp_zebra_label_manager_ready())
+		return;
+
+	ret = lm_release_label_chunk(zclient_sync, start, end);
+	if (ret < 0)
+		zlog_warn("%s: error releasing label range!", __func__);
+}