On Thu, Sep 20, 2012 at 5:13 PM, Stephen Sprunk <stephen@sprunk.org> wrote:
On 19-Sep-12 03:46, Alex Harrowell wrote:
On the other hand, the scarcity is of *globally unique routable* addresses. You can make a case that private use of (non-RFC1918) IPv4 resources is wasteful in itself at the moment. To be provocative, what on earth is their excuse for not using IPv6 internally? By definition, an internal network that isn't announced to the public Internet doesn't have to worry about happy eyeballs, broken carrier NAT, and the like because it doesn't have to be connected to them if it doesn't want to be. A lot of the transition issues are much less problematic if you're not on the public Internet.
Actually, they're not any different, aside from scale. Some private internets have hundreds to thousands of participants, and they often use obscure protocols on obscure systems that were killed off by their vendors (if the vendors even exist anymore) a decade or more ago, and no source code or upgrade path is available.
The "enterprise" networking world is just as ugly as, if not uglier than, the consumer one.
I haven't worked much on the commercial private internets, but I did work for someone who connected on the back end into numerous telco cellphone IP data networks. For all of those who argue that these applications should use 1918 space, I give you those networks, where at one point I counted literally 8 different 10.200.x/16 nets I could talk to at different partners (scarily enough, 2 of those were "the same company"...). And hundreds and hundreds of other space conflicts. Yes, you can NAT all of that, but if you get network issues where you need to know the phone end address and do end to end debugging on stuff, there are no curse words strong enough in the English language. -- -george william herbert george.herbert@gmail.com