IPv6 and CDN's

Mon Oct 25 20:20:28 UTC 2021

On Fri, Oct 22, 2021 at 05:13:09PM +0200, Job Snijders via NANOG wrote:
> Hi everyone, goedenmiddag Marco!
> 
> On Fri, Oct 22, 2021 at 01:40:42PM +0200, Marco Davids via NANOG wrote:
> > We currently live in times where is actually fun to go IPv6-only. In my
> > case, as in: running a FreeBSD kernel compiled without the IPv4-stack.
> 
> Indeed, this is fun experimentation. Shaking the (source code) trees
> through excercises like these is a valuable way to identify gaps.
> 
> > It turns out that there underlying CDN's with domain names such as
> > ‘l-msedge.net’ and ‘trafficmanager.net’ (Microsoft) or 'fastly.net', that
> > reside on authoritative name servers that *only* have an IPv4 address.
> 
> As some observant readers noticed (hint: https://ip6.nl/#!deb.debian.org),
> Fastly is working hard with select customers and friends to support IPv6
> for everyone.
> 
> ** SNIP **
> 
> as BGP traffic engineering) might be reluctant to offer IPv6 services
> "as if they are the same as IPv4". More study is required.
> 
> Tl;DR - work in progress! :-)

	Some of the other CDNs do have IPv6 on the authorities and
should work without issues.

eg:

dig -6 +trace www.akamai.com.

	- Jared

-- 
Jared Mauch  | pgp key available via finger from jared at puck.nether.net
clue++;      | http://puck.nether.net/~jared/  My statements are only mine.