The American Registry for Internet Numbers (ARIN) is considering sweeping changes to the way they distribute IP addresses that could allow network operators to make money by transferring unused blocks of IPv4 address space to others in need. One result could be lessened incentive to move to IPv6 any time soon.

Until now, IPv4 addresses have not been trade-able goods. When an organization was done using IPv4 address space, it was supposed to return it to one of five regional registries such as ARIN in North America. The only time ISPs can transfer IPv4 address space is when they are acquired.

Read full story: Network World