Good ${greeting_time}, Michiel!

11 Jun 2019 09:08:12, you wrote to Richard Menedetter:

 MV>>> I still don't see how one can have an IPv6 address on the end
 MV>>> device if the "last mile" does not support IPv6, other than via a
 MV>>> 6to4 tunnel with one of the tunnel end points on the end device.
 RM>> IPv4 and/or IPv6 is tunneled in a GTP tunnel to your home provider.
 RM>> It is unpacked there and handled as if you were in your home network.
 MvdV> I think I am getting it now. I have always wondered why a device
 MvdV> such as a dongle for a laptop that can not be used to make
 MvdV> telephone calls, needs a telephone number.

All they need are two ughm... numbers: IMSI and Ki (ID and key).

However, the operators' billing systems are tied to a contract number:
1. one customer may have many phones (so passport data are non-unique);
2. the customer may require SIM card replacement (change IMSI and Ki);
3. the customer may want to change the number.

 MvdV> Well... it looks like these mobile devices still use an equivalent
 MvdV> of making a POTS modem call to the "ISP home gateway" to get on the
 MvdV> internet... That is a revelation... ;-)

Very unlikely. But I can check that while being 400 km away from home.


--
Alexey V. Vissarionov aka Gremlin from Kremlin
gremlin.ru!gremlin; +vii-cmiii-ccxxix-lxxix-xlii

... that's why I really dislike fools.
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