On 2024-03-25, Evan Sherwood <[email protected]> wrote:
>>> interface igc1 {
>>>   prefix fdbf:e79a:8e3e::/48
>>                          ^^^^
>> lesser operating systems will refuse to form autoconf addresses if the
>> prefix length is not 64.
>
> Thanks, this was helpful. I got addresses allocated on client machines,
> but they don't seem routable.

> I can ping6 back to my router using the IPv6 address in the prefix
> delegation from my ISP, but I cannot seem to do the same for the
> addresses in my ULA prefix.

Did you configure an address in the ULA prefix on the gateway?
(hostname.if / ifconfig).

> I was following this guide:
> https://www.kuon.ch/post/2022-03-15-openbsd-dhcp-pd/
>
> I modified my /etc/dhcpcd_up.sh to read
>
> ```
> route sourceaddr -ifp igc0
> ```
>
> ... where igc0 is my ISP-facing interface. I assigned a static ULA to
> the same interface as an alias. Not sure if that's relevant, but it felt
> relevant to mention.
>
> On the router, netstat -rn shows a route to my client in the ISP prefix,
> but no route in my ULA prefix.
>
> Is there something additional I need to do to enable communication over
> addresses in my ULA prefix?
>

Better to show what's actually configured (ifconfig -A, rad.conf,
netstat -rnfinet6, etc).

To reach the internet from ULA addresses you'll need NAT. Alternatively
use *both* global and ULA prefixes in rad.conf (or I think you can
use auto prefix). But I don't think you've got that far yet.

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