bgpd: Skip route-map LPM optimisation for AF_FLOWSPEC

Reported-by: Qifan Zhang, Palo Alto Networks
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
(cherry picked from commit 6038df7)

Author: ton31337

lib/routemap.c

@@ -2602,7 +2602,11 @@ route_map_result_t route_map_apply_ext(struct route_map *map,
 	GETRUSAGE(&mbefore);
 	ibefore = mbefore;
 
-	if (prefix->family == AF_EVPN) {
+	if (prefix->family != AF_INET && prefix->family != AF_INET6) {
+		/* LPM tries are IPv4/IPv6-only; non-IP families (AF_EVPN,
+		 * AF_FLOWSPEC, AF_UNSPEC) must walk all clauses or
+		 * IPv4-restricted matches get silently bypassed.
+		 */
 		index = map->head;
 	} else {
 		skip_match_clause = true;