Re: "Programmers can't get IPv6 thus that is why they do not have IPv6 in their applications"....

[Joseph Holsten <joseph () josephholsten com>]

On 2012-11-27, at 21:07, Jeroen Massar wrote:
> As such, if an application does not do proper IPv6 today the people in
> charge of the thing simply did not care...

Or do care. 

From http://wiki.apache.org/hadoop/HadoopIPv6:
> Apache Hadoop does not currently support IPv6 networks, it uses IPv4 addresses for communicating between nodes. This 
> is because Hadoop is designed to work in private datacenters, which usually have private IP addresses in the 10.x.x.x 
> address space.
>
>       • Using IPv4 addresses everywhere provides a single form of TCP addressing for all our tests. Different network 
> configurations (DNS, reverse DNS, DNS caching) still provide lots of problems and performance issues, but there is no 
> need to worry about which IP protocol version is used.
>       • Shorter addresses make for shorter packets, which can have a benefit on busy networks.
>
> This does not mean that the Hadoop team thinks that IPv4 is the best ever network protocol and that there is no 
> reason to upgrade ever, only that it works well in datacenters. 

(Yes, I am technically trolling. But mostly because I don't have the energy to fight for IPv6 any more. Maybe you do?)
--
http://josephholsten.com