On 20 Sep 2010, at 12:39, Adrian Kennard wrote: [...]
>> I understand that the PEN space is infinite. Of course, typing a *very* long >> string of numbers into a configuration might be a bit awkward. > > Now why could they not have done that for IP addresses :-) I was told that variable length IP addresses were considered in the early design stage but we didn't go there because it is cheaper to produce equipment that processes fixed length addresses. Hopefully 128 bits will be enough for the next century. Regards, Leo