Re: [Starlink] Info on IP country ranges

[Alexandre Petrescu <alexandre.petrescu@gmail.com>]

Le 08/12/2023 à 13:46, Alexandre Petrescu via Starlink a écrit :
>
> Le 08/12/2023 à 13:24, Steven a écrit :
>> Alexandre,
>>
>>> Are you sure the DHCPv6-PD server is in Starlink network and not on the
>>> MikroTik router?
>> That would be quite the unusual setup, and even so would require that 
>> I obtain said /56 from elsewhere (such as via a tunnel) to then 
>> delegate back to myself...
> True, it would be unusual, but it is practiced.
>>
>>> It could be that the MikroTik router runs tunnelbroker, obtains a /56
>>> from HE, splits that /56 into multiple /64s and puts it on the 
>>> DHCPv6-PD
>>> local server config files.
>> I am confident this is not the case since I configured these routers 
>> from scratch.
>>
>>> It could also be that the DHCPv6-PD server is run on the Dishy.
>> It is unlikely that it is on the Dishy, as the latency to the DHCPv6 
>> servers IP address, as well as the first IP hop, indicates the usual 
>> Ground->Space->Ground latency I'd expect.
>
> YEs, that latency argument is a good reason.
>
>
>>
>>> It could also be that the DHCPv6-PD server is run on the starlink 
>>> ground
>>> network: maybe on the teleport, maybe deeper on the starlink network.
>> Yes, this is the most likely place they are running this, likely the 
>> PoP you are being routed through.
>>
>>> Do you know the IPv6 address of your DHCPv6-PD Server?
>> The DHCPv6 server address is a Starlink IPv6 address, the same one as 
>> my default gateway (`2406:2d40:xxx:xxx::1`). The /56 I am being 
>> allocated is also from the same /32 as this DHCPv6 server, with the 
>> /32 being 2406:2d40::/32, which you'll note is allocated to Starlink.
>
> Thanks.  That convinces me it is as you say: the /56 is provided by 
> the starlink DHCPv6-PD server situated in the ground network of 
> starlink somewhere.
>
> This makes it for a great tool for many things.


Sorry for having been cryptic  about 'many things' - I meant to say that 
I hope that MikroTik querying the DHCPv6-PD server in the starlink 
infrastructure might work ok from  a car as well.  This would be one big 
advantage of using starlink instead of a 4G-5G link in a car (the 4G-5G 
cellular networks only give /64s to end users, and the android 
smartphones dont run DHCPv6-PD Clients).

Alex

>
> Alex
>
>>
>> Cheers,
>> Steven
> _______________________________________________
> Starlink mailing list
> Starlink@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/starlink