[fpc-other] Your thoughts on cloud based server instances?

[Luca Olivetti]

El 13/03/17 a les 00:15, Graeme Geldenhuys ha escrit:
> On 2017-03-12 20:22, Luca Olivetti wrote:
>> AFAIK it isn't.
>>
>> https://cr.yp.to/djbdns/ipv6mess.html
>
> Take everything you read on the Internet with a pinch of salt. :)  That
> page seems very old and much out of date. ie: it references multiple
> times articles dated cira 2002 - that's 14 years ago.
>
> eg:
> "Example of the difference: As of 2002.11, Google hasn't published IPv6
> addresses for www.google.com. What exactly is Google's reward for
> spending time setting up useless IPv6 addresses for its perfectly
> functional IPv4 machines? In contrast, they've had IPv6 software for years."
>
> I've got IPv6 enabled here, and my ISP supports IPv6 fully. I enabled
> IPv6 as my preferred IP protocol, and http://ipv6.google.com works
> perfectly for me, and many (if not all web servers) will determine the
> best protocol to use if both IPv4 and IPv6 are enabled for the same URL.

But, correct me if I'm wrong, if you don't run a dual stack os, you 
can't contact an ipv4 host, on an ipv4 address, from an ipv6 host.
Basically, it's true that there's no real transition path: ipv6 is 
useless for servers since they cannot be contacted by ipv4 clients 
(unless they also have an ipv4 address), and it's equally useless for 
clients (unless, again, they also have an ipv4 address to contact 99% of 
the Internet).


Bye
-- 
Luca