Subj : NANOG 73
To   : Markus Reschke
From : Michiel van der Vlist
Date : Mon Jul 30 2018 22:37:41

Hello Markus,

On Monday July 30 2018 18:11, you wrote to me:

 MvdV>> What I find remarkable is that T-Mobile US is working towards
 MvdV>> an IPv6 only mobile network by switching off IPv4 and
 MvdV>> accomodating "legacy" with transition mechanisms. While here in
 MvdV>> my part of the world they are still IPv4 only. Even their
 MvdV>> website is IPv4...

 MR> I assume they didn't get sufficient IPv4 address space from ARIN for
 MR> the US market. So they were forced to go for IPv6.

Arin depleted ger IPv4 stock in Sept 2015, so it is a reasonable assumption that T-mobile US can't get ant more IPv4 address space. But the the same would apply to RIPE and the European obile providers. Ripe exhausted her IPv4 space Sept 2012. But here (Netherlands) none of the mobile providers offer IPv6 yet. They offer IPv4 CGNAT though... :-(


Cheers, Michiel

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