Hi, I have a simple question, how to send a packet to a group of nodes but not to all of them? I can do broadcast "AM_BROADCAST_ADDR" and unicast "by specifying the node address" but how to do multicast in AMSend.send( ) ? Thanks for any help! Mona _______________________________________________ Tinyos-help mailing list Tinyos-help@millennium.berkeley.edu https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help