[arin-ppml] FW: ULA-C and reverse DNS

michael.dillon at bt.com michael.dillon at bt.com
Tue Apr 6 13:57:08 EDT 2010


> If any part - even one address - of ULA can be routed then it 
> is not ULA, it is GUA.  If it is GUA then current policy and 
> pricing apply.  Simple.

GUA (Global Unicast Address) is defined by the IETF as an
address from the 2000::/3 block. ULA is defined by the IETF
as an address from the FC00::/7 block. Clearly ULA is not GUA.

Also quite clearly, ULA addresses can be routed. There is not
restriction on how ULA addresses are to be used, unlike, for
instance, multicast addresses.

On a policy level, routability is determined by network operators
not by ARIN. 

And as far as fees are concerned, this mailing list cannot influence
ARIN's fee structure, nor can it influence how the IETF sets up
the fee structure, nor can it influence the fees that ICANN might
set in the future for one reason or another.

--Michael Dillon



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