SIOCSLIFMTU
if (ioctl(fd, SIOCSLIFMTU, &lifr) == -1) {
if (myioctl(s, SIOCSLIFMTU, &lifr) < 0) {
if (ioctl(s, SIOCSLIFMTU, (caddr_t)&lifr) < 0)
{ (uint_t)SIOCSLIFMTU, "SIOCSLIFMTU", "lifreq" }, /* 121 */
if (ioctl(s, SIOCSLIFMTU, (caddr_t)&lifr) < 0)
/* 121 */ { SIOCSLIFMTU, sizeof (struct lifreq), IPI_PRIV | IPI_WR,