Реферат: Алгоритми маршрутизації в мережах

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)

LOGERR("sysctl(IPCTL_FORWARDING)");

if (!ipforwarding) {

if (supplier)

msglog("-s incompatible with ipforwarding=0");

if (default_gateway) {

msglog("-g incompatible with ipforwarding=0");

default_gateway = 0;

}

supplier = 0;

supplier_set = 1;

}