Lorenzo Colitti <lore...@google.com> wrote: >> I think that we should design our protocols to work independent of >> what prognostications we are able to make about what users might do >> today, rather than making decisions that will ensure that certain >> perfectly valid uses of the network will fail tomorrow.
> But you're saying you want ULAs because you want to continue to do what > you were doing yesterday: persistent connections, like SSH and > X-windows. I think you're trying to fix the problem at the wrong > layer. But I don't expect we'll agree with me on that. It's not about whether or not SSH and X-windows can reconnect or not. It's that, even if they try, the target host has been given a new address, and there are long-lived credentials which have been tied to the name and the address. We did this in the days when we didn't have mDNS, and we couldn't trust that well DNS, and putting the IPv6 address (the ULA), of that ssh-enabled powered bar into my /etc/hosts (or .ssh/config or registry, or shell script) seems like an entirely sensible thing to do. I will go back and read James' message about joins and splits. It seems that we have this problem with GUAs as well, and it seems that the whole address selection issue exists without ULAs, as long as one has multiple ISPs. And LLNs will be installed with ULAs, and in some cases, we might really want to route that into the homenet, so ULAs show up even if CPE devices don't create them. {BTW: I've never been a fan of ULA-Random, and I really really would like to fine some way to make non-routable IPv6 globally unique addresses, that include reverse DNS and whois, available for a low enough price that nobody has to think twice about getting them. But, in this case for the home of the unsophisticated user, ULA-Random, seems correct} -- Michael Richardson <mcr+i...@sandelman.ca>, Sandelman Software Works -= IPv6 IoT consulting =-
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