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 ([email protected]) http://www.biplane.com.au/kauer http://twitter.com/kauer389 GPG fingerprint: 8D08 9CAA 649A AFEF E862 062A 2E97 42D4 A2A0 616D Old fingerprint: A0CD 28F0 10BE FC21 C57C 67C1 19A6 83A4 9B0B 1D75 _______________________________________________ AusNOG mailing list [email protected] http://lists.ausnog.net/mailman/listinfo/ausnog
