Summary

  • At ARIN 58, Kevin Blumberg supported defining out-of-region use but challenged the draft’s exemption for “simultaneous use” inside and outside the ARIN region. A proxy service, he suggested, could make predominantly external use look local.
  • Chris Woodfield offered a different test: a redundant network can move the same address space between places without being Anycast. The exchange left a practical question for the draft’s authors: what, exactly, must be operating at the same time?

Kevin Blumberg brought a proxy to a policy meeting. He did not bring a server. He brought the possibility that one could be placed in just the right spot to make an address block look as if it lived in two regions at once.

The occasion was ARIN 58 on 22 October. Draft Policy ARIN-2026-5 proposed a definition that the rulebook had lacked: out-of-region use would mean the sole use of ARIN-allocated resources outside the service region. A resource used simultaneously inside and outside would sit beyond that definition. The obvious case was Anycast, in which a service can be reached through announcements from multiple locations.

Blumberg backed the effort, then aimed at its widest word. Why say “simultaneous use” instead of Anycast? Could a proxy service, mostly operating abroad but appearing to have a foothold inside ARIN’s region, qualify? His concern was specific: if an exception admits too many arrangements, a regional registry may be treated as the easiest global address counter. The draft was still under discussion; he was testing its wording, not reporting an actual proxy loophole.

Chris Woodfield pushed back with a network that moves rather than duplicates. A disaster recovery arrangement might shift the same addresses from one location to another. It is not Anycast, yet Woodfield thought the policy ought to account for it. Blumberg reached for an airport: flying from Miami to Amsterdam does not put him in both cities simultaneously. The line got a laugh-sized point across. Operators may share a goal while disagreeing over the clock that determines whether a network occupies two places.

The next question came from a branch-office example: could an ARIN holder use a fraction of its block at a new office overseas? ARIN’s John Sweeting called that out-of-region use. Three ordinary architectures—Anycast, failover and a remote office—had produced three different tests for one adjective. Blumberg’s ARIN biography places him on the NRO Number Council and at The Wire; at the microphone he was talking as an operator who has to describe where a network actually runs.

The meeting did not turn a draft into a rule. It supplied a better editing assignment. The phrase needs a measurable event: concurrent routing, active service delivery, a particular address’s presence, or something else the registry can verify. Until the authors choose, “simultaneous” is less a definition than an invitation to argue over the timestamp.