/* Prototypes. */
extern int str2sockunion(const char *, union sockunion *);
extern const char *sockunion2str(const union sockunion *, char *, size_t);
+int in6addr_cmp(const struct in6_addr *addr1, const struct in6_addr *addr2);
extern int sockunion_cmp(const union sockunion *, const union sockunion *);
extern int sockunion_same(const union sockunion *, const union sockunion *);
extern unsigned int sockunion_hash(const union sockunion *);
union sockunion *);
extern int sockopt_ttl(int family, int sock, int ttl);
extern int sockopt_minttl(int family, int sock, int minttl);
-extern int sockopt_cork(int sock, int onoff);
extern int sockunion_socket(const union sockunion *su);
extern const char *inet_sutop(const union sockunion *su, char *str);
extern enum connect_result sockunion_connect(int fd, const union sockunion *su,