TULIP_DFLAG_ENDRING
eop->di_desc->d_flag &= TULIP_DFLAG_ENDRING|TULIP_DFLAG_CHAIN;
eop->di_desc->d_flag &= TULIP_DFLAG_ENDRING|TULIP_DFLAG_CHAIN;
nextout->d_flag &= TULIP_DFLAG_ENDRING|TULIP_DFLAG_CHAIN;
DESC_FLAG(&ri->ri_last[-1]) = TULIP_DFLAG_ENDRING;