Subj : IPv6 and mobile
To   : Michiel van der Vlist
From : Andre Grueneberg
Date : Wed Aug 28 2013 22:20:26

Hi Michiel

Michiel van der Vlist schrieb:

 MvdV> All of the ISP that offer mobile internet here seem to have gone
 MvdV> CGNAT. They all give me an IPv4 address in the range 10.*.*.*.

Oh, in Germany they have been doing the same ever since (for nitpickers: there were some exceptions with the right APN).

Standard-wise an IPv4v6 (dual-stack) PDP context is a rather new feature which is hard to implement with existing roaming partners in mind. Basically these became available with 3GPP release 8 networks (3GPP LTE is also specified in release 8). So the devices would need to open two PDP contexts (with different APNs) for IPv4 and IPv6 to have dual stack. This of course doubles ressources in the network.

I've seen it working in the mid-200x years on Nokia mobile phones. Other mobile vendors still had problems with IPv6 bearers in 2011. Even modern LTE devices (from some asian vendors) had problems with interoperability when you had IPv4v6 PDP contexts.

Many baseband chip vendors asked extra license fees for IPv6 support ... so it will take another while until we see proper IPv6 in our 3GPP networks ... operators are rather cautious -- every support call reduces their margin.

 MvdV> But no IPv6 address. How about other parts of the world? Are
 MvdV> there ISPs out there offering (native) IPv6 on mobile internet?

T-Mobile US is said to offer IPv6.

CU Andre               E-Mail: andre@grueneberg.de 
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