Hi Enrico,

On 10/05/2016 01:50 AM, Enrico Sau wrote:
> Hi all,
>
> I'm still trying to make IPV6 work.
> First, I ensured that my modem and network support IPV6 making a
> successful IPV6 connection with linux pppd.

Which modem are you using, if its no secret?

>
> Then I set the ofono context protocol to "dual", removed the check on
> the protocol in at_gprs_activate_primary(), and set +CGDCONT with
> "IPV4V6" which works for my modem.
>
> Result is that the modem successfuly get an IPV6 address because I can
> query it from another AT channel, but ofono does not retrieve any IPV6
> parameters:
>
> [ /le910na1_0/context1 ]
>          Username =
>          AccessPointName =
>          Settings = {
>                      Interface = ppp0
>                      Method = static
>                      DomainNameServers = 172.22.1.201,  0.0.0.0,
>                      Address = 172.22.1.101
>                      Netmask = 255.255.255.255 }
>          AuthenticationMethod = chap
>          Password =
>          Protocol = dual
>          Type = internet
>          Active = 1
>          IPv6.Settings = {
>                      Interface = ppp0 }
>          Name = Internet
> The consequence is that the ppp0 interface only has an IPV4 address.
> I also tried with IPV6 only but same result.
> Any hints?
>

It looks like IPV6CP was never properly integrated into GAtPPP logic. 
At least I don't see ipv6cp_new() inside gatchat/gatppp.c anywhere.  You 
might have to extend gatppp.c to manage IPV6CP as well.

Regards,
-Denis