bgp: ignore NHT when bgpd has never connected zebra
diff --git a/bgpd/bgp_zebra.h b/bgpd/bgp_zebra.h
index 9a592c3..5d4ed62 100644
--- a/bgpd/bgp_zebra.h
+++ b/bgpd/bgp_zebra.h
@@ -48,4 +48,6 @@
 extern struct interface *if_lookup_by_ipv6 (struct in6_addr *);
 extern struct interface *if_lookup_by_ipv6_exact (struct in6_addr *);
 
+extern int bgp_zebra_num_connects(void);
+
 #endif /* _QUAGGA_BGP_ZEBRA_H */