bad:                    usage(*argv);
usage(*argv);
show(int argc, char *argv[]){	int	af = 0;        if (argc > 1) {                argv++;                if (argc == 2 && **argv == '-')                    switch (keyword(*argv + 1)) {                        case K_INET:                                af = AF_INET;                                break;#ifdef INET6                        case K_INET6:                                af = AF_INET6;                                break;#endif                        case K_IPX:                                af = AF_IPX;                                break;                        case K_LINK:                                af = AF_LINK;                                break;                        case K_X25:                                af = AF_CCITT;                                break;                        default:                                goto bad;                } elsebad:                    usage(*argv);        }		p_rttables(af, 0);}