Symbol: SIOCGIFCAP
sbin/ifconfig/ifconfig.c
1094
if (ioctl(s, SIOCGIFCAP, &ifr) < 0)
sbin/ifconfig/ifconfig.c
1288
if (ioctl(s, SIOCGIFCAP, &ifr) == 0) {
sys/net/if.c
2047
case SIOCGIFCAP: