[ppml] /48 vs /32 micro allocations, answer: /48

Kevin Loch kloch at hotnic.net
Wed Mar 16 20:21:16 EST 2005

Paul Vixie wrote:
>>In any case there seems to be a strong consensus that /48's are ok for
> not from me.  RIRs should allocate only /32's and /128's, and the latter
> only to critical infrastructure like root name servers.  the dominant cost
> is "routing table slot" and this cost should not be paid unless there is
> a universal benefit.  critical infrastructure is one such benefit.  "enough
> stuff to warrant a /32" is another such benefit.  where's the unique yet
> universal benefit of a /48?

The universal benefit for 2005-1 allocations is "deployment".

I would also put TLD servers in the same category as root servers for
criticality (perhaps even more so since the root zone is easy to
locally mirror in an emergency but tld's are not).


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