[Starlink] Starlink ISL data

[David Lang]

I'm seeing some IPv6 on starlink (and had to troubleshoot another person on 
starlink that had a corporate access problem that was resovled by disabling 
IPv6)

David Lang

  On Mon, 27 Mar 2023, David Fernández via Starlink wrote:

> Date: Mon, 27 Mar 2023 12:44:26 +0200
> From: David Fernández via Starlink <starlink at lists.bufferbloat.net>
> Reply-To: David Fernández <davidfdzp at gmail.com>
> To: starlink at lists.bufferbloat.net
> Subject: Re: [Starlink] Starlink ISL data
> 
> I thought Starlink was not supporting IPv6, because of this:
>
> https://twitter.com/elonmusk/status/967712110661615616
>
>> Date: Sun, 26 Mar 2023 19:32:31 -0700
>> From: Dave Taht <dave.taht at gmail.com>
>> To: Dave Taht via Starlink <starlink at lists.bufferbloat.net>
>> Subject: Re: [Starlink] Starlink ISL data
>> Message-ID:
>> 	<CAA93jw4kcfXiwMw0zKAuQV3BjpWp6ZvQ2TQFbtEy9CFRN5aY2w at mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Nate gave me the opportunity to test a bit of ipv6 access on one of
>> his dishys today. I am going to give p2p a shot, also, and he
>> conveniently has bbr2 installed. It is of course difficult to discern
>> the difference between transport behaviors and their underlying
>> connectivity - for example the BBR2 result attached has a baseline
>> (idle!) latency jump of over 40ms which is hard to explain.
>>
>> Despite these plots saying downloads, they were essentially uploads
>> from his box over the internet.
>>
>> The summary of the data I have so far on this direction is:
>>
>> Cubic, looks like cubic, usually, but not always. BBR rarely looks like BBR.
>>
>> On Fri, Mar 24, 2023 at 2:46 PM Dave Taht <dave.taht at gmail.com> wrote:
>>>
>>> Vint just asked me a difficult question over here about the
>>> performance of the ISL links for my upcoming AMA next week
>>>
>>> https://twitter.com/mtaht/status/1639361656106156032
>>>
>>> And to date, we really don't know. We do know it is up!? but...
>>>
>>> has anyone managed to measure p2p ipv6 performance starlink to
>>> starlink over an ISL link as yet? Do we know anyone at the poles? In
>>> general I always look for flent and irtt data, but I'd settle for a,
>>> oh, call it 5-10 minute long packet capture of single iperf flow,
>>> running over tcp cubic (bbr would be great too).... one test in each
>>> direction.
>>>
>>> (in fact that would be great from any starlink terminal to any of my
>>> servers around the world)
>>>
>>> I have some data from a couple of you (thx ulrich in particular!), but
>>> I have not sat down to take it apart as I have been far, far too busy
>>> with libreqos and a bunch of nice, small, competent ISPs deploying
>>> that, to worry about fixing a billionaire's network all that much....
>>> but I've set aside next week to answer AMAs about everything from all
>>> and sundry, so if you got data, please share?
>>>
>>> --
>>> Come Heckle Mar 6-9 at: https://www.understandinglatency.com/
>>> Dave Täht CEO, TekLibre, LLC
>>
>>
>>
>> --
>> https://www.youtube.com/watch?v=tAVwmUG21OY&t=6483s
>> Dave Täht CEO, TekLibre, LLC
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