Hi, On Sun, Oct 29, 2017 at 02:53:41PM -0700, Scott Weeks wrote: > I was not around for those discussions (and not being a computer > science person, nor wanting to go on this for too long as has been > endlessly done on other lists), but it seems TLV would have allowed > 4 to be a subset of the new space. I never heard that discussed > much and that's what I meant by my comment.
The point is: if you introduce a change to the packet format (and TLV would be), you are no longer compatible with IPv4. Which makes the whole "I want this to be compatible so I do not have to change infra or end points" totally moot. Worse, then you have "old IPv4" and "new IPv4" machines who might or might not be able to talk to each other, depending on which IPv4 address the "new IPv4" got (a long one or a short one) - while with IPv6, you have unmodified old IPv4 to ensure compatibility during the transition, and then you turn it off (in 10 years or so). Gert Doering -- NetMaster -- have you enabled IPv6 on something today...? SpaceNet AG Vorstand: Sebastian v. Bomhard Joseph-Dollinger-Bogen 14 Aufsichtsratsvors.: A. Grundner-Culemann D-80807 Muenchen HRB: 136055 (AG Muenchen) Tel: +49 (0)89/32356-444 USt-IdNr.: DE813185279 _______________________________________________ swinog mailing list email@example.com http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog