[Cerowrt-devel] ipv6 delegations on mobile

2018-10-04 Thread Dave Taht
I'm curious if any cellular provider is actually doing dhcpv6-pd yet?
Can you get a /64? a /60?

(if not, why? the relevant standards and running code have now been
out there for 5+ years)

It would be nice to be able to have a backup 4g or 5g link that did v6

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Dave Täht
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Tel: 1-669-226-2619
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Re: [Cerowrt-devel] hacking on babel 1.8.3

2018-10-04 Thread Dave Taht
On Thu, Oct 4, 2018 at 7:27 AM Mikael Abrahamsson  wrote:
>
> On Wed, 3 Oct 2018, Dave Taht wrote:
>
> > I've been trying to deploy the latest openwrt to all ~40 routers I
> > have. (I did get a reprieve on having to close the lab, but I have to
> > update the whole campus as part of it).
>
> I managed to get Homenet working on 18.06.1. There is a conflict with some
> files so you have to do "opkg remove" on the dhcpv6 server, but after that
> it installs cleanly and seems to work. I installed it on two machines and
> they did all the homenet+hncp+babel things.

Next stop a few hundred. on someone elses testbed...

My main issue with hncp (3 years back) is it wanted to assign an IPv6
address to *everything*
and I only have /60s to spare, and I didn't want to assign public ipv6 addresses
to internal routers at all.

> One thing I discovered is that I would like DHCPv6-PD lifetime capping, so
> I can control the source address selection of hosts. I had two different
> upstreams with PDs and one had much longer lifetime compared to the
> other. So hosts chose the one with the highest lifetime, which wasn't what
> I wanted.

I'm rather impressed with how far odhcp has evolved since I last looked and
had some code in it to manage times better but probably not what you want.

https://github.com/openwrt/odhcpd

In particular I was *really impressed* by the clean interface to netlink.
Netlink is a PITA to deal with.

It could use some more ebpf support.

> --
> Mikael Abrahamssonemail: swm...@swm.pp.se



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Dave Täht
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http://www.teklibre.com
Tel: 1-669-226-2619
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Re: [Cerowrt-devel] hacking on babel 1.8.3

2018-10-04 Thread Mikael Abrahamsson

On Wed, 3 Oct 2018, Dave Taht wrote:


I've been trying to deploy the latest openwrt to all ~40 routers I
have. (I did get a reprieve on having to close the lab, but I have to
update the whole campus as part of it).


I managed to get Homenet working on 18.06.1. There is a conflict with some 
files so you have to do "opkg remove" on the dhcpv6 server, but after that 
it installs cleanly and seems to work. I installed it on two machines and 
they did all the homenet+hncp+babel things.


One thing I discovered is that I would like DHCPv6-PD lifetime capping, so 
I can control the source address selection of hosts. I had two different 
upstreams with PDs and one had much longer lifetime compared to the 
other. So hosts chose the one with the highest lifetime, which wasn't what 
I wanted.


--
Mikael Abrahamssonemail: swm...@swm.pp.se
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