> Does your TCP/IP stack support Multicasting? If no, then unless you are
> planning to make some other use for Multicasting (other than IP
> multicasting) multicasting support in the driver might not be useful. 

(already noted that the IP stack does Multicasting)

The AppleTalk stack relies on link-level multicasting for phase 2. W/o
multicasting support, you can't talk to ethernetted macs. :-)

Take care,

Bill