--- zzzz-none-000/linux-2.6.39.4/include/linux/igmp.h	2011-08-03 19:43:28.000000000 +0000
+++ puma6-arm-6490-729/linux-2.6.39.4/include/linux/igmp.h	2021-11-10 13:23:10.000000000 +0000
@@ -219,6 +219,7 @@
 
 extern int ip_check_mc_rcu(struct in_device *dev, __be32 mc_addr, __be32 src_addr, u16 proto);
 extern int igmp_rcv(struct sk_buff *);
+extern int ip_mc_join_group_for_mode(struct sock *sk, struct ip_mreqn *imr, int omode);
 extern int ip_mc_join_group(struct sock *sk, struct ip_mreqn *imr);
 extern int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr);
 extern void ip_mc_drop_socket(struct sock *sk);