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Re: Variable length internet addresses in TCP/IP: history



Brian E Carpenter wrote:

>> With a fully backwards compatible transparent addressing scheme,
>> a much larger fraction of the nodes would have switched to actively
>> use IPv6 many years ago.

> Why? They would have needed updated stacks. The routers would
> have need updated stacks. The servers would have needed updated
> stacks. The firewalls would have needed updated stacks. The load
> balancers would have needed updated stacks. Many MIBs would have
> needed to be updated. DHCP servers would have needed to be updated.
> ARP would have needed to be updated, and every routing protocol.

With Realm Specific IP [RFC3102]:

   This document examines the general framework of Realm Specific IP
   (RSIP).  RSIP is intended as a alternative to NAT in which the end-
   to-end integrity of packets is maintained.  We focus on
   implementation issues, deployment scenarios, and interaction with
   other layer-three protocols.

what is necessary are minor modification on IPv4/transport stack
of new (but not existing) hosts and minor extension of DHCP.

						Masataka Ohta
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