fallback to family specific %any(6) if kernel lookup fails

src/charon/sa/ike_sa.c

@@ -1102,6 +1102,12 @@ static void resolve_hosts(private_ike_sa_t *this)
 			{
 				host->set_port(host, IKEV2_UDP_PORT);
 			}
+			else
+			{	/* fallback to address family specific %any(6), if configured */
+				host = host_create_from_dns(
+									this->ike_cfg->get_my_addr(this->ike_cfg),
+									0, IKEV2_UDP_PORT);
+			}
 		}
 	}
 	if (host)

src/libstrongswan/utils/host.c

@@ -374,6 +374,10 @@ host_t *host_create_from_string(char *string, u_int16_t port)
 	{
 		return host_create_any(AF_INET);
 	}
+	if (streq(string, "%any6"))
+	{
+		return host_create_any(AF_INET6);
+	}
 	
 	this = host_create_empty();
 	if (strchr(string, '.'))