I was playing around with multicast on 9front the other week and

managed to get something working (for some definition of working). I

have attached 2 test programs for sending and receiving multicast

datagrams. Unfortunately, it seems you can't send/receive messages

from the same host. I'm not sure what's missing to get that part

working.

Also, note that the dial in mcastrecv.c is just a hack to get the

local address via getnetconninfo, which doesn't seem to work given the

announce directory.

Hopefully these are of some use. Would be interested to hear how to

fix the mentioned (and unmentioned) shortcomings.