PD broken in v4.3.2? prefix6 start prefix is outside the subnet

[Chris Buechler]

On Wed, Jul 15, 2015 at 3:59 AM, Christian Kratzer <ck-lists at cksoft.de> wrote:
>
> a couple of quick points on this:
>
> 1. this would require one to enlargeng the access network to emcompass
> the whole pool of prefixes one wishes to delegate. This would definetely
> be considered a broken design.
>

Yes, especially considering there's no reason the PD subnet needs to
be even close to the interface's subnet. As things stand now after
that change, in some circumstances you'd need a subnet6 2000::/3 or
close to it for PD to work.


> 2. Just having the network large enough would still only route towards
> the net.  This would not help with getting the ultimate next hop for the
> assigned prefix resolved.
>
> 3. ipv6 relay agents on routers that support PD sniff the traffic and
> transparently add the route to the delegated prefix to the correct next hop.
>
> Such a change would definetely be broken and would have to be backed out.
>

Yes, agree.


On Wed, Jul 15, 2015 at 12:17 AM, Shawn Routhier <sar at isc.org> wrote:
>
> However I do think you are confused about the configuration file
> showing class support from the KB article.  I have tried the three
> configuration files in that kb article and all of them seem to work
> correctly for me with the prefixes being within the subnet.
>

Correct, the issue is where they're outside the subnet, sorry I wasn't
clear on that part.