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Behaviour of Cards Under Multicast
==================================

This is how they currently behave, not what the hardware can do--for example,
the Lance driver doesn't use its filter, even though the code for loading
it is in the DEC Lance-based driver.

The following are requirements for multicasting 
-----------------------------------------------
AppleTalk       Multicast       hardware filtering not important but
                                 avoid cards only doing promisc
IP-Multicast    Multicast       hardware filters really help
IP-MRoute       AllMulti        hardware filters are of no help


Board           Multicast       AllMulti        Promisc         Filter
------------------------------------------------------------------------
3c501           YES             YES             YES             Software
3c503           YES             YES             YES             Hardware
3c505           YES             NO              YES             Hardware
3c507           NO              NO              NO              N/A
3c509           YES             YES             YES             Software
3c59x           YES             YES             YES             Software
ac3200          YES             YES             YES             Hardware
apricot         YES             PROMISC         YES             Hardware
arcnet          NO              NO              NO              N/A
at1700          PROMISC         PROMISC         YES             Software
atp             PROMISC         PROMISC         YES             Software
cs89x0          YES             YES             YES             Software
de4x5           YES             YES             YES             Hardware
de600           NO              NO              NO              N/A
de620           PROMISC         PROMISC         YES             Software
depca           YES             PROMISC         YES             Hardware
dmfe            YES             YES             YES             Software(*)
e2100           YES             YES             YES             Hardware
eepro           YES             PROMISC         YES             Hardware
eexpress        NO              NO              NO              N/A
ewrk3           YES             PROMISC         YES             Hardware
hp-plus         YES             YES             YES             Hardware
hp              YES             YES             YES             Hardware
hp100           YES             YES             YES             Hardware
ibmtr           NO              NO              NO              N/A
ioc3-eth        YES             YES             YES             Hardware
lance           YES             YES             YES             Software(#)
ne              YES             YES             YES             Hardware
ni52            <------------------ Buggy ------------------>
ni65            YES             YES             YES             Software(#)
seeq            NO              NO              NO              N/A
sgiseek         <------------------ Buggy ------------------>
sk_g16          NO              NO              YES             N/A
smc-ultra       YES             YES             YES             Hardware
sunlance        YES             YES             YES             Hardware
tulip           YES             YES             YES             Hardware
wavelan         YES             PROMISC         YES             Hardware
wd              YES             YES             YES             Hardware
xirc2ps_cs      YES             YES             YES             Hardware
znet            YES             YES             YES             Software


PROMISC = This multicast mode is in fact promiscuous mode. Avoid using
cards who go PROMISC on any multicast in a multicast kernel.

(#) = Hardware multicast support is not used yet.
(*) = Hardware support for Davicom 9132 chipset only.