nxge_grp_dc_unlink
if ((dc = nxge_grp_dc_unlink(nxge, group, channel)) == 0) {
if (nxge_grp_dc_unlink(nxge, group, channel) != dc) {
static nxge_hio_dc_t *nxge_grp_dc_unlink(nxge_t *, nxge_grp_t *, int);