UWF
options = cpr8 (Config5) & ~(UWF | MWF | BWF);
if (wol->wolopts & WAKE_UCAST) options |= UWF;
if (options & UWF) wol->wolopts |= WAKE_UCAST;
r8169_mod_reg8_cond(tp, Config5, UWF, wolopts & WAKE_UCAST);