[arin-ppml] ARIN-PPML 2015-2

Matthew Kaufman matthew at matthew.at
Mon Jun 1 17:04:43 EDT 2015

On 6/1/2015 1:09 PM, William Herrin wrote:
> On Mon, Jun 1, 2015 at 3:33 PM, John Curran <jcurran at arin.net> wrote:
>> On Jun 1, 2015, at 2:50 PM, William Herrin <bill at herrin.us> wrote:
>>> A registration is most emphatically intended to confer upon the
>>> registrant the right to -exclude- others' use of those numbers within
>>> the routing infrastructure on the public Internet.
>> if you think that there’s a legal obligation on the ISPs to follow the
>> registry, then please provide a citation...
> Hi John,
> I sell you hosting services using a block of IPs that I advertise to
> my ISPs. Another end user advertises routes to those same IPs for
> their services. Whichever of us has the solid registration claim wins
> the _tortious interference_ case against end-user and his ISPs.
> Handily. It's almost a cookie-cutter violation.

But in the case at hand, holder X writes a letter to non-holder Y saying 
"sure, I'm ok with you advertising these addresses for the next year"

If holder X then sues non-holder Y and presents the ARIN registration as 
evidence, that letter isn't going to make this a "cookie-cutter 
violation" any more. And further, in the case at hand, holder X 
*doesn't* sue non-holder Y... instead a bunch of relying parties, 
including law enforcement, just can't see who really has the legal use 
of the addresses, because ARIN refused to update their records because 
some arbitrary policies weren't followed.

Matthew Kaufman

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