How to force rapid ipv6 adoption

George, Wes at
Fri Oct 2 16:01:54 UTC 2015

On 10/2/15, 10:48 AM, "NANOG on behalf of Cryptographrix"
<nanog-bounces at on behalf of cryptographrix at> wrote:

>For ISPs that already exist, what benefit do they get from
>providing/allowing IPv6 transit to their customers?

If they'd like to continue growing at something above churn rate, they
need additional IP addresses to give their new customers.
Buying those addresses, undertaking projects to free up addresses from
other internal uses, or using CGN to share existing ones all have
nontrivial costs. The fewer things they need to make work on legacy IPv4,
the lower those costs can be (less CGN capacity since IPv6 traffic
bypasses the NAT, less support costs because less stuff breaks by going
through the NAT, etc).[1,2,3] But that's dependent on content and CPE
supporting it, so a number of large ISPs have chosen to go ahead and
deploy[4], and focus on pushing the progress on the other fronts so that
they can see that benefit of deploying.

Wes George





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