IPv6 and CDN's

Marco Davids mdavids at forfun.net
Fri Oct 22 12:08:26 UTC 2021

Hi Jens,

Op 22-10-21 om 14:03 schreef Jens Link:

> I ran into this some time ago with deb.debian.org on an IPv6 only Debian
> VM with a locally installed resolver. I opened a ticket which was closed
> in record time: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=961296

Just for the record; your issue is slightly different:

You wrote:

"deb.debian.org is a CNAME for debian.map.fastly.net. There are no AAAA 
records for fastly.net so any DNS querys from an IPv6 only resolver will 
not work."

At the moment debian.map.fastly.net has an AAAA-record though.

The thing is; the authoritative name servers of fastly.net are only 
willing to hand out that AAAA-record via IPv4. So it still doesn't work 
with the (locally installed) IPv6-only resolver ;-)



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