On Aug 22, 2008, at 1:07 PM, Robin D. Bussell wrote: > does anyone know of any nifty protocol tricks > that could be used to ascertain the IP address of a device (that > has no > interface other than Ethernet) given, say , a packet sniffer and a > means > of injecting packets? Broadcast ICMP PING packets. Useful things; we fought hard to keep them allowed when they talked about making them illegal... BillW -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist