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The problem - IPv4
32 bit address
- 4,294,967,296 - Addresses
- Except we loose:
- Multicast etc. ~ 537 million
- Localhost ~ 16 million
- RFC 1918/zeroconf ~ 17 million
Rate of allocation
- IANA run out Q4 2010 – Q1 2011
- RIRs – Q2-Q3 2011