SIOCSIFMETRIC
if (direct_ioctl(env, SIOCSIFMETRIC, &ifr) == -1)
case SIOCSIFMETRIC:
IOCTL_STRUCT_CONV_TO(SIOCSIFMETRIC, ifreq);
IFREQ_IN(SIOCSIFMETRIC);
IFREQ_IN(SIOCSIFMETRIC);
IFREQ_IN(SIOCSIFMETRIC);
case SIOCSIFMETRIC: /* set IF metric */
case SIOCSIFMETRIC:
case SIOCSIFMETRIC: