>> It seems to me, when delegating CE ipv6 prefix, a longest match might
>> be used.
>
> OK, but, again, if a realistic use case is available where longest match is
> indeed REQUIRED, there is no problem to impose longest match.
> What is missing so far is this use case.
can i cite Tetsuya's examples to elaborate that? assume we have three
below rules
1.{2408:db8:100::/40, 10.10.1.0/24, 48}
2.{2408:db8:200::/40, 10.10.2.0/24, 48}
3.{2408:db8::/32, 10.10.0.0/24, 48}
if a 48 CE prefix is delegated, rule 1 and 2 should be checked against
before rule 3. Although in this case, you can not assign 10.10.0.1 and
10.10.0.2 ipv4 addresses to a CE.
Thanks,
washam
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