--- zzzz-none-000/linux-4.9.276/include/uapi/linux/sysctl.h	2021-07-20 14:21:16.000000000 +0000
+++ falcon-5530-750/linux-4.9.276/include/uapi/linux/sysctl.h	2023-04-05 08:19:02.000000000 +0000
@@ -769,6 +769,13 @@
 	NET_SCTP_RCVBUF_POLICY		 = 17,
 };
 
+#ifdef CONFIG_MCAST_SNOOPING
+enum {
+	NET_BRIDGE_IGMP_SNOOPING = 1,
+	NET_BRIDGE_MLD_SNOOPING = 2,
+};
+#endif
+
 /* /proc/sys/net/bridge */
 enum {
 	NET_BRIDGE_NF_CALL_ARPTABLES = 1,