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Navigating the Future of IPv4 Address Transfers Amidst Looming Shortage

As IPv4 shortages loom, understanding the dynamics of IP address transfers is crucial for network growth. The unallocated pool has nearly dried up, with demand for IPv4 addresses continuing to outpace availability, despite the underwhelming deployment of IPv6. IPv4 transfers offer a potential solution, allowing addresses to be exchanged under regulated policies. While these transfers can optimize resource use and assist in transitioning to IPv6, they also present risks, including stockpiling and market price escalation. Strategic and justified transfer policies are essential to manage this evolving landscape.

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Navigating the Future of IPv4 Address Transfers Amidst Looming Shortage

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Presentation Transcript

  1. IP(v4) Address Transfers

  2. Background • IPv4 shortage is looming • IPv4 demand will outlast unallocated pool (2012) • IPv6 deployment by this time is not guaranteed • Where will addresses be found for new networks? • Options • Sorry, “No more IPv4” • RIR recovery of un(der)used addresses • Register transfers under approved policies • Unregistered “blackmarket” transfer

  3. IPv4 lifetime

  4. IPv4 Address Transfer • Currently: • RIRs allocate address to requestors on request • According to demonstrated need • According to agreed policies • While resources are available • Possibly in future: • Addresses can be transferred between parties • From one with addresses to spare • To another who needs addresses

  5. Transfers - Cons/Risks • Stockpiling • Limited by IPv6 deployment • Routing fragmentation • Self-limiting due to ISP filtering • Price escalation • Self-limiting, encouraging IPv6 deployment • Choice of “Expensive” vs “unavailable”?

  6. Transfers - Pros • Marketsoptimiseuse of resources • Resource priced according to its value • and the cost of alternatives (NAT, IPv6…) • Well understood mechanisms • By regulators, service providers, community • Rebalance global IPv4 address distribution • Assist in transition to IPv6 • Maintain accuracy of registration • Assuming that transfers will take place anyway

  7. Transfer policies: Variables • Limit size of transfer • To avoid excessive fragmentation • Limit access to RIR allocations after transfer • For seller and/or buyer, specified period of time • Timing of policy • Before or after exhaustion of IPv4 supplies • Require justification by recipient • According to normal allocation policies • To enforce “need-based” approach

  8. Thanks pwilson@apnic.net

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