Алгоритми маршрутизації в мережах

default:

goto usage;

}

}

argc -= optind;

argv += optind;

if (tracename == 0 && argc >= 1) {

tracename = *argv++;

argc--;

}

if (tracename != 0 && tracename[0] == '\0')

goto usage;

if (argc != 0) {

usage:

logbad(0, "usage: routed [-sqdghmAt] [-T tracefile]"

" [-F net[/mask[,metric]]] [-P parms]");

}

if (geteuid() != 0)

logbad(0, "requires UID 0");

mib[0] = CTL_NET;

mib[1] = PF_INET;

mib[2] = IPPROTO_IP;

mib[3] = IPCTL_FORWARDING;

len = sizeof(ipforwarding);

if (sysctl(mib, 4, &ipforwarding, &len, 0, 0) < 0)