UNP_BINDING
if (unp->unp_flags & (UNP_BINDING | UNP_CONNECTING))
unp->unp_flags |= UNP_BINDING;
unp->unp_flags &= ~UNP_BINDING;
if (unp->unp_flags & (UNP_BINDING | UNP_CONNECTING))
if (unp->unp_flags & (UNP_BINDING | UNP_CONNECTING))