[ppml] Effects of explosive routing table growth on ISP behavior
Scott Leibrand
sleibrand at internap.com
Wed Oct 31 14:33:40 EDT 2007
Brian Johnson wrote:
> Scott Leibrand wrote:
>
>> If by "require" you mean "enforce", then you're probably right.
>> However, if by "require" you mean "state what should happen" there is
>> precedent: the IPv6 guidelines say you have to announce your allocation as a single netblock.
>>
>
> Question: Does it say you cannot advertise smaller portions as well as
> the larger block?
>
There's some debate on that, but as I read it, no. My understanding is
that you're free to advertise subnets longer than /32 out of PA space,
but other networks are free to filter them.
I think it may eventually be necessary to move toward something similar
for IPv4, but it's not all that urgent just yet.
-Scott
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