struct aliasHandlers {
  char *(*PacketAliasGetFragment) (char *);
  void (*PacketAliasInit) ();
  int (*PacketAliasIn) (char *, int);
  int (*PacketAliasOut) (char *, int);
  struct alias_link *(*PacketAliasRedirectAddr)
             (struct in_addr, struct in_addr);
  struct alias_link *(*PacketAliasRedirectPort)
             (struct in_addr, u_short, struct in_addr, u_short,
	                 struct in_addr, u_short, u_char);
  int (*PacketAliasSaveFragment) (char *);
  void (*PacketAliasSetAddress) (struct in_addr);
  unsigned (*PacketAliasSetMode) (unsigned, unsigned);
  void (*PacketAliasFragmentIn) (char *, char *);
};

extern int loadAliasHandlers(struct aliasHandlers *);
extern void unloadAliasHandlers();