extern struct in6_addr alldrouters6;
extern int ospf6_serv_sock(void);
+extern void ospf6_serv_close(void);
extern int ospf6_sso(ifindex_t ifindex, struct in6_addr *group, int option);
extern int ospf6_sendmsg(struct in6_addr *, struct in6_addr *, ifindex_t *,