-void dummy_ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err,
- __be16 port, u32 info, u8 *payload) {}
-int dummy_ipv6_chk_addr(struct net *net, const struct in6_addr *addr,
- const struct net_device *dev, int strict)
+static void dummy_ipv6_icmp_error(struct sock *sk, struct sk_buff *skb, int err,
+ __be16 port, u32 info, u8 *payload) {}
+static int dummy_ipv6_chk_addr(struct net *net, const struct in6_addr *addr,
+ const struct net_device *dev, int strict)