--- zzzz-none-000/linux-4.19.183/include/net/transp_v6.h	2021-03-24 10:07:39.000000000 +0000
+++ bcm63-7530ax-756/linux-4.19.183/include/net/transp_v6.h	2023-06-28 08:54:20.000000000 +0000
@@ -58,6 +58,10 @@
 
 /* address family specific functions */
 extern const struct inet_connection_sock_af_ops ipv4_specific;
+#if defined(CONFIG_BCM_KF_MPTCP) && defined(CONFIG_BCM_MPTCP)
+extern const struct inet_connection_sock_af_ops ipv6_mapped;
+extern const struct inet_connection_sock_af_ops ipv6_specific;
+#endif
 
 void inet6_destroy_sock(struct sock *sk);