Re: [v6ops] [*SPAM* Score/Req: 3.9/3.3] Re: [*SPAM* Score/Req: 3.9/3.3] Re: reclassify 464XLAT as standard instead of info

[Mikael Abrahamsson <[e-mail]>]

On Thu, 21 Sep 2017, Alexandre Petrescu wrote:

> Ok, I can agree if you say so.  I can not capture packets on the UE to 
> confirm or infirm; the "UE" is the "modem", that's how Balong calls it; 
> there is no source code for that part.
>
> It seems that you tried to capture on modem?  Or is it that somebody 
> told this to you?  Or is it that it is in the 3GPP specs?

It's in the 3GPP spec. In 3G it's GTP GGSN-RNC, and then it's handled by 
the RLC layer between RNC and UE. I'd imagine it's something similar in 
LTE but then instead between UE and eNodB (since there is no RNC).

> The doubt I have is the following: operator tells that the Terminal does 
> some form of connection setup.  I dont see it.  Operator does not see it
>  either.  I speculate that that connection setup includes GTP.  It's a 
> speculation.
>
> I do see packets on PGW that show IPv6 encapsulated in GTP (an IPv4 
> protocol).

GTP can be either IPv4 or IPv6, and the encapsulated packets can be either 
IPv4 or IPv6 (and probably other protocols as well, I haven't used it for 
anything else).

-- 
Mikael Abrahamsson    email: [e-mail]