Peter Onion wrote: > I'm not sure that 255.255.255.255 is even a valid broadcast address ? It is valid. One RFC for this is 919 It says about 255.255.255.255: "The address 255.255.255.255 denotes a broadcast on a local hardware network, which must not be forwarded. This address may be used, for example, by hosts that do not know their network number and are asking some server for it." Sounds like any router or gateway is (or should be) a barrier for this address, but otherwise it's fine to use. Gerhard -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist