if (argc != 3) badusage();
addr= strtoul(argv[1],&ep,16); if (*ep || addr&~0x0ffffffffUL) badusage();
port= strtoul(argv[2],&ep,16); if (*ep || port&~0x0ffffUL) badusage();
+ if (port >= IPPORT_RESERVED/2) _exit(EPERM);
if (chdir(CONFIGDIR)) perrorfail("chdir " CONFIGDIR);