> Was just trying to get more info from large networks about whether how some > of the things that make theoretical logical sense actually work out in > practice that way e.g. whether fixed header size and the fewer headers > required to decode to read an IPv6 packet (with respect to IPv4) really may > provide some signifiant performance advantages.
So far, all indications are that the fixed header size means nothing, in terms of speed, but the *extension* headers are a significant complication and source of problems. Some of the other claims (e.g. more secure because IPsec is always available) are simply wrong - there is plenty of IPv6 equipment that doesn't offer IPsec. Steinar Haug, Nethelp consulting, sth...@nethelp.no