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-rw-r--r--bgpd/bgp_packet.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/bgpd/bgp_packet.c b/bgpd/bgp_packet.c
index 24742b4c07..f372d419b6 100644
--- a/bgpd/bgp_packet.c
+++ b/bgpd/bgp_packet.c
@@ -1037,6 +1037,13 @@ static void bgp_notify_send_internal(struct peer_connection *connection,
/* Add packet to peer's output queue */
stream_fifo_push(connection->obuf, s);
+ /* If Graceful-Restart N-bit (Notification) is exchanged,
+ * and it's not a Hard Reset, let's retain the routes.
+ */
+ if (bgp_has_graceful_restart_notification(peer) && !hard_reset &&
+ CHECK_FLAG(peer->sflags, PEER_STATUS_NSF_MODE))
+ SET_FLAG(peer->sflags, PEER_STATUS_NSF_WAIT);
+
bgp_peer_gr_flags_update(peer);
BGP_GR_ROUTER_DETECT_AND_SEND_CAPABILITY_TO_ZEBRA(peer->bgp,
peer->bgp->peer);