dladm_vnic_up
status = dladm_vnic_up(handle, linkid, 0);
if ((status = dladm_vnic_up(handle, vnicid, 0)) == DLADM_STATUS_OK)
if ((status = dladm_vnic_up(dld_handle, vnic->dlv_vnic_id, 0))
return (dladm_vnic_up(handle, linkid, DLADM_OPT_VLAN));
extern dladm_status_t dladm_vnic_up(dladm_handle_t, datalink_id_t, uint32_t);