Brief History

• 1974:

• • IPv4 proposed

• 1981:

• • IPv4 standardized

• 1992:

• • The need for a next-generation IP became apparent; proposals were requested
  • The main issue was a perceived shortage of address space, but routing table growth was also a concern

• 1995:

• • The first version of IPv6 was published as RFC 1883 (proposed standard)

• 1996:

• • The 6bone became operational
  • IPv6 tunneled over IPv4

• 1998:

• • The second version of IPv6 was published as RFC 2460 (draft standard
  • A number of features were added beyond the bigger address space