Apparently the Internet could run out of available addresses by 1995 and the Internet Engineering Task Force is now looking at ways of overcoming address limitations in the current Internet Protocol version 4 standard. Three proposals have been submitted. SIP, Simple Internet Protocol, is compatible with different technologies on different computers and is backwards-compatible with existing IP technology. PIP, P Internet Protocol, is a new address structure which would supplant the current IP structure. And TUBA, TCP and UDP over Big Addresses, is a means to combine TCP/IP and International Standards Organisation standards to accommodate larger Open Systems Interconnection-based addresses that will support both TCP/IP and ISO-based applications.
