Somebody whose email never reaches my inbox alledgedly said:
> IPv6 with unnecessarily lengthy 16B addresses without valid > technical reasoning only to make network operations prohibitively > painful is a garbage protocol.
Apart from its incivility, this sentence is factually untrue. The address length was 8 bytes in the early design of what became IPv6, which was of course essential to overcome the main limitation of IPv4. It was expanded to 16 bytes when the value of an interface identifier in addition to a routeable prefix was considered. That idea was based on existing practice in several non-IP network technologies, and on the IPng requirements process. In other words, on technical reasoning and on running code. Professionalism includes factual accuracy. Brian