[AusNOG] EdgeRouter IPv6 on AussieBB

Jennifer Sims jenn at jenn.id.au
Sun Sep 8 17:08:32 EST 2019

Hey all,

I have an EdgeRouter working on v6 just fine with Aussie. I’m not at home to grab my config but when I get home I’ll do it.

Don’t forget to opt in for v6 if you haven’t already. 

It’s awkward to copy/pasta from my iPhone via SSH. 



Sent from my iPhone

> On 8 Sep 2019, at 15:43, Karl Auer <kauer at biplane.com.au> wrote:
>> On Sun, 2019-09-08 at 14:12 +1000, Alex Wakefield wrote:
>> My internal interface manages to get IPs out of the range handed out
>> by Aussie but clients never get an address after that. I'm trying to
>> use SLAAC to hand out IPs. Relevant config on my internet facing port
>> below.
> I don't speak EdgeRouter but that secoond-last stanza looks to me as if
> you are asking the interface itself to autoconf its own address. That's
> probably wrong; IIRC a routing interface can't be autoconfed. Odd that
> the router didn't complain if so, however.
> Not sure if that prefix_length refers to what you get from the
> upstream, or the prefix you are trying to advertise. If the latter, be
> aware that nothing will do SLAAC on a prefix length other than 64.
> If clients don't SLAAC themselves IPv6 addresses, it's almost always
> because they are not configured to use IPv6 at all, or they are not
> seeing RAs from the router. Easy to check by sniffing the link on that
> interface - you should be seeing various kinds of IPv6 multicast
> including RA.
> Check that a test client definitely has a link local address; if it
> does, it's doing IPv6. Then check that it doesn't have some kind of
> "kill all ipv6" filter. You'd be amazed how often that's the issue -
> someone turned off or blocked IPv6 to fix some problem they thought
> IPv6 was causing. Some operating systems (like Linux at least) have a
> "don't do SLAAC" switch and/or an "ignore RAs" switch.
> Are those "firewall" stanzas definitely not blocking IPv6?
> Try putting an IPv6 prefix on the link directly (no PD) and seeing if
> the clients do their thing then. At least that will definitely exclude
> client-side issues.
> Regards, K.
> -- 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Karl Auer (kauer at biplane.com.au)
> http://www.biplane.com.au/kauer
> http://twitter.com/kauer389
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