UNP_BINDING
if (unp_flags & UNP_BINDING) {
if (unp->unp_flags & UNP_BINDING) {
unp->unp_flags |= UNP_BINDING;
unp->unp_flags &= ~UNP_BINDING;
unp->unp_flags &= ~UNP_BINDING;
if (unp->unp_vnode != NULL || (unp->unp_flags & UNP_BINDING) != 0)