[c-nsp] Large networks

[Ivan Pepelnjak]

> > > > RPF check? 
> > > 
> > > won't help for  "customer A is 10.0.0.1, customer B is 10.0.0.2, 
> > > your router interface is 10.0.0.254/24".
> > 
> > This is debatable as the host routes point to various L3 
> interfaces ...
> 
> Well, *if* you have "various L3 interfaces", *then* RPF is 
> going to help (but it's ugly as hell, and needs proxy-arp to 
> work, which in itself is ugly).

This was exactly what I started hinting at and Mikael provided a link to a
working configuration. Ugly? Beauty is in the eye of the beholder :)

Ivan
 
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