> -----Original Message----- > From: Alexandru Petrescu [mailto:alexandru.petre...@gmail.com]
> For one, homenets don't move or at least not as fast as cars. A > homenet > may change its attachment every year or so, whereas a car may change it > every 10 minutes or so. Just as a side FYI, my homenet attachment IP changes every time I reboot the ADSL modem. So even this would not matter greatly, *if* the unique ID of a car were a DNS entry, rather than hardcoded in the IP address in any way. Your point about having multiple IPv6 subnets (prefixes) inside the car is a good one. But it can be solved like it is for home nets, as long as we don't run out of the shortened prefixes we're creating. Side note: Seems to me, with new applications like these IoT concepts (which are nothing new, but promise way more addressable hosts than we might have expected in the 1990s when IPv6 was invented), or vehicles, that allowing for something like 112-bit prefixes would be a good thing. You still get 16-bit IIDs, way more than you are likely to need in a single in-car subnet, and you can assign the individual car a 96-bit prefix. Giving each car the possibility of 64K subnets, while wasting far less address space. I kringe at wanton waste. Bert -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
