nanog mailing list archives

Re: IPv6 /64 links (was Re: ipv6 book recommendations?)


From: Tim Franklin <tim () pelican org>
Date: Mon, 25 Jun 2012 10:00:16 +0100 (BST)

Even though it may be easy to make end systems and local
LANs v6 capable, rest, the center part, of the Internet
keep causing problems.

Really?  My impression is that it's very much the edge that's hard - CE routers, and in particular cheap, nasty, 
residential DSL and cable CE routers.  Lots of existing kit out there that can't do v6, and the business case for a 
fork-lift upgrade just doesn't stack up.  It's a cost issue, though, not a technology one - it's perfectly possible to 
deliver v6 over these technologies.  Tunnelling, while not ideal, is certainly a workable stop-gap, and I'm *very* 
happy to have real, globally uniquely addressed end-to-end Internet in my house again as a result.

Systems can be a problem too - both in convincing IS people to change things, in getting the budget for changes, and in 
finding all the dark places hidden in the organisation where v4 assumptions are made.

But in the Internet core?  I don't see any huge obstacles at $ISP_DAYJOB, with any of the people I know in the 
industry, or with the ISPs I do business with.  For co-lo, VPS, leased lines, real Ethernet tails, v6 connectivity is 
being delivered and working fine today.

Regards,
Tim.


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