extern char *pfd_addforward(char *desthost, int destport, char *srcaddr,
int port, void *backhandle, const Config *cfg);
extern void pfd_close(Socket s);
extern char *pfd_addforward(char *desthost, int destport, char *srcaddr,
int port, void *backhandle, const Config *cfg);
extern void pfd_close(Socket s);