--- fwsync/patches/ip_fw2.patch	2022/08/13 18:08:19	1.4
+++ fwsync/patches/ip_fw2.patch	2022/08/19 09:41:25	1.5
@@ -1,5 +1,5 @@
 diff --git a/sys/netpfil/ipfw/ip_fw2.c b/sys/netpfil/ipfw/ip_fw2.c
-index 99d3a9c58cb..cba964f3202 100644
+index 99d3a9c58cb..0f9badd08a0 100644
 --- a/sys/netpfil/ipfw/ip_fw2.c
 +++ b/sys/netpfil/ipfw/ip_fw2.c
 @@ -186,6 +186,10 @@ ipfw_nat_cfg_t *ipfw_nat_del_ptr;
@@ -23,3 +23,13 @@ index 99d3a9c58cb..cba964f3202 100644
  				break;
  
  			case O_SKIP_ACTION:
+@@ -3200,6 +3207,9 @@ do {								\
+ 				 * non IPv4 packets. Libalias expects only IPv4.
+ 				 */
+ 				if (!is_ipv4 || !IPFW_NAT_LOADED) {
++					/* purge waiting aliases for sync */
++					if (V_sync_alias)
++						V_sync_alias(NULL, NULL);
+ 				    retval = IP_FW_DENY;
+ 				    break;
+ 				}