> >" This means in particular that a router using the source address as > > extra qualifier MUST NOT route packets based on a source/destination > > route to a system that doesn't support source/destination routes (and > > hence doesn't understand the route)." > > > >is sufficient but more than necessary and I would correct this. The > >full condition is > > > >" a router using the source address as > > extra qualifier (SD-capable) CAN route packets based on a > >source/destination > > route to a system B that doesn't support source/destination routes > > IIF it can ensure that B's shortest path to destination does not > >include an SD-router again > > (i.e. the packet MUST NOT re-enter the domain of SD-capable routers)" > > Right, with the obvious case being where the adjacent non-SD-capable router > does does an Elvis imitation - “Return to Sender”.
[Tony saiz:] Which leads to "heartbreak hotel" ... > >" Hop-by-hop routing with node-dependent topology information", V > >Fayet, Denis A Khotimsky, T. Przygienda, 1999/3/21, Conference INFOCOM'99. > > An oldie but a goodie ;^) [Tony saiz:] You want an oldie ? Bacon, Francis (1605). "The Advancement of Learning" 6. London. pp. Chapter 1. That's actually first mention in Western thought of what we call simply "binary system" ;-) Now back from shaping electrons into thought transmission (email) to shaping electrons into thought templates (code) ;-) -- tony _______________________________________________ rtgwg mailing list [email protected] https://www.ietf.org/mailman/listinfo/rtgwg
