Re: [Starlink] dhcpv6-pd details

[Dave Taht <dave.taht@gmail.com>]

On Mon, May 17, 2021 at 12:48 PM Nick Buraglio <nick@buraglio.com> wrote:
>
> I have this working now between my providers with straight routing and gateway checking, but it’s pretty easily doable other ways with platforms like routerOS or pfsense.
> FWIW, I’m working with some others on an IETF draft proposal that will hopefully solve the plaguing problem of multiple IPv6 PD or otherwise provider assigned address blocks that will make a lot of that easier, too.

Hmm? We solved this long ago in  cerowrt, openwrt, and in linux, by
using "source specific routing", which is the default for many openwrt
derived OSes.

Basically it looks like this:

ip route add from 2001:abcd::/56 via whatever
ip route add from 2001:dbcd::/56 via whatever2

You then distribute both sets of ipv6 addresses to the clients. Simple
clean and it solved the bcp38 problem because there is no
default route for any but these ipv6 addresses in the system. It works
well for vpns also.

Happy eyeballs takes care of the rest.

https://datatracker.ietf.org/doc/html/draft-ietf-babel-source-specific-08
describes how we added it to the babel routing protocol
as well, so best hops can be easily chosen in a more complex network.
In case I had 5+ comcast uplinks spread across a wifi campus so having
multiple uplinks and failover was needed. It's been up and running
for... 7 years?

https://en.wikipedia.org/wiki/Source-specific_routing also made it
into a few other places.

I'm pretty certain every other OS completely missed this key feature
of course including your mikrotik




>
> nb
>
>
> On Mon, May 17, 2021 at 2:36 PM David Lang <david@lang.hm> wrote:
>>
>> On Mon, 17 May 2021, Nick Buraglio wrote:
>>
>> > Inline
>> >
>> > On Mon, May 17, 2021 at 2:15 PM Dave Taht <dave.taht@gmail.com> wrote:
>> >>
>> >> Starlink provides a router, also? I'm so confused. I thought the dishy
>> >> was all there was. Care to tear it apart and describe what's in it?
>> >
>> > As far as the "router" is concerned, it's very much a consumer grade
>> > device that is managed via the mobile app. I hated it, so I took it
>> > out. It's still up in the attic. near the cable conduit, if I recall.
>>
>> Fantastic, I was hoping it would be something like this. I think this opens up a
>> lot of more useful options (including more easily doing failover between the
>> dish and other network options)
>>
>> David  Lang



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