--- zzzz-none-000/linux-4.19.183/include/uapi/linux/if.h	2021-03-24 10:07:39.000000000 +0000
+++ bcm63-7530ax-756/linux-4.19.183/include/uapi/linux/if.h	2023-06-28 08:54:20.000000000 +0000
@@ -132,6 +132,11 @@
 #define IFF_ECHO			IFF_ECHO
 #endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO */
 
+#if ((defined(CONFIG_BCM_KF_MPTCP) && defined(CONFIG_BCM_MPTCP)) || !defined(CONFIG_BCM_IN_KERNEL))
+#define IFF_NOMULTIPATH	0x80000		/* Disable for MPTCP 		*/
+#define IFF_MPBACKUP	0x100000	/* Use as backup path for MPTCP */
+
+#endif
 #define IFF_VOLATILE	(IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_ECHO|\
 		IFF_MASTER|IFF_SLAVE|IFF_RUNNING|IFF_LOWER_UP|IFF_DORMANT)