Faster 'Net growth rate raises fears about routers

Tue Apr 3 16:00:36 UTC 2001

On Tue, 3 Apr 2001, Yakov Rekhter wrote:

> > It's possible to 'solve' these problems in the future:
> > Forbid IP level multihoming for IPv6 which crosses aggregation boundaries.
> > I.e. absolutly no multihoming that inflates more then your providers
> > routing tabling, connect to whoever you want, but no AS should emit a
> > route for any other AS without aggregating it into their own space without
> > a special agreement of limited scope (i.e. not globally!)
> 
> Who is going to "forbid" this ? And who is going to enforce this ?

Ahem.

The same people who prevent the current global routing table from being
flooded by /25 - /30s.

> > We need to stop looking at IP addresses as host-identifyers (thats what
> > DNS is for) and look at them as path-identifyers.
> 
> Perhaphs. But (stating the facts) for now, both in IPv4 *and* in
> IPv6 IP addresses carry dual semantics - host-identifiers (aka
> end-point identifiers) *and* path-identifiers (aka locators).

I though it was explicit with IPv6 that end-nodes are not-host
identifyers.

In the real world today, IPv6 addresses are certantly not
host-identifyers: Many hosts (including the one I'm typing on) have
multiple IP addresses, and sites have a farm of web serverers behind a
single IP address. We may pretend that a IP address means a host, but it
doesn't.