metric = 0;
} else
metric = ifr.ifr_metric;
+ printf("The result of SIOCGIFMETRIC is %d\n", metric);
strcpy(ifr.ifr_name, ifname);
if (ioctl(skfd, SIOCGIFMTU, &ifr) < 0)
mtu = 0;
else
mtu = ifr.ifr_mtu;
+ printf("The result of SIOCGIFMTU is %d\n", mtu);
strcpy(ifr.ifr_name, ifname);
if (ioctl(skfd, SIOCGIFDSTADDR, &ifr) < 0) {