Randy, On 11/30/11 6:09 AM, Randy Bush wrote: >> skype etc. will learn. This does prevent the breakage it just makes >> it more controlled. What's the bet Skype has a patched released >> within a week of this being made available? > cool. then, by that logic, let's use 240/4. the apps will patch within > a week. ok, maybe two. As someone who tried to "Go There", I agree with you that 240/4 is not usable. It would be fine in routers in short order, as it's fairly easy for ISPs to exert influence and get that code changed, but general purpose computing and all the OSS systems are a completely different kettle of fish. But that actually supports the notion that we need to use a different block of address space. So does the argument that 10/8 et al are well deployed within SPs. You wrote also that: > and all this is aside from the pnp, skype, ... and other breakage. > and, imiho, we can screw ipv4 life support. To keep this in the realm of the technical, perhaps you would say (a lot) more on how you think this would break IPv4? For the record, I'm of two minds- I hate the idea that the SPs haven't gotten farther along on transition, and I also wonder whether a rapider deployment of something like 6rd would be better than renumbering all edges into this space. On the other hand, that speaks nothing about all the content on v4 today, and that's where the pain point is. Thanks, Eliot _______________________________________________ Ietf mailing list Ietf@xxxxxxxx https://www.ietf.org/mailman/listinfo/ietf