And Now for Something Completely Different (was Re: IPv6 news)

Sun Oct 16 08:50:53 UTC 2005

> How is a split between locator / identifier any different logicaly  
> from the existing ipv4 source routing?

IPv4 source routing, as it exists today, is an extremely limited  
mechanism for specifying waypoints along the path to the destination.

This is completely orthogonal to a real identifier/locator split,  
which would divide what we know of as the 'address' into two separate  
spaces, one which says "where" the node is, topologically, and one  
which says "who" the node is.   One might use the identifier in the  
TCP pseudo-header, but not the locator, for one example, immediately  
allowing both mobility and multi-homing.

Tony