tr_capabilities
if ((tr->tr_capabilities & IFCAP_TRUNK_FULLDUPLEX) &&
tr->tr_capabilities = IFCAP_TRUNK_FULLDUPLEX;
tr->tr_capabilities = IFCAP_TRUNK_FULLDUPLEX;
priv = tr->tr_capabilities & IFCAP_TRUNK_MASK;
tr->tr_capabilities = trunk_capabilities(tr);
tr->tr_capabilities = trunk_capabilities(tr);
tr->tr_capabilities = trunk_capabilities(tr);