Huawei ME906s-158 (a.k.a. HP lt4132) IPv6 support

[Tore Anderson]

* Tore Anderson

> I'm having problems making IPv6 work with this device. Even though
> Huawei's home page[1] claims it supports IPv6, the "AT+CGDCONT=?" only
> gives a single response line with the "IP" PDP type.

Just in case anyone with the same problem happens to stumble across this
old thread: I've finally figured out how to enable IPv6 support in the
Huawei ME906s-158 / HP lt4132. For the details, see:

https://toreanderson.github.io/2018/12/01/huawei-me906s-hp-lt4132-enabling-ipv6.html

Tore