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