TRILL_NO_TCI
tci = TRILL_NO_TCI;
(tci != TRILL_NO_TCI ? sizeof (struct ether_vlan_extinfo) : 0);
tci != TRILL_NO_TCI ? ETHERTYPE_VLAN : etype, mp, extra_hdr_len);
if (tci != TRILL_NO_TCI) {
tci = TRILL_NO_TCI;