BGP (in)security makes the AP wire

Eugen Leitl eugen at
Sun May 9 17:17:30 UTC 2010

On Sun, May 09, 2010 at 12:47:53PM -0400, Steven Bellovin wrote:

> It was discussed during the IPng days.  

I realize the scheme is old, I myself reinvented it around 1990.
I guess give that the idea hasn't gone very far since kind answers
my own question. 

> My view at the time -- and my view today -- is that there's 
> an inherent conflict between that and multiple competitive ISPs.  

It'd be a standard. Surely people were thinking that before TCP/IP
suite became dominant speaking a particular protocol was a 
competitive advantage against a competitor. 

> Suppose there's an IP address corresponding to 40.75013351 west 
> longitude, 73.99700928 north latitude (my building, according 
> to Google maps).  To which ISP should it be handed for delivery?  
> Must all ISPs in a given area peer with each other?

Let's say I buy a mesh radio which speaks the protocol. Who's
the ISP? By putting it up on a pole or a roof I've become a transit 
point for traffic which potentially originated far away. I could
use QoS to prioritize traffic by distance, so that far away 
traffic doesn't expire.

In larger networks, you could tag packets with your ISP's tag,
until it is being delivered to a "closest" point (of course geographic
distance is not a single metric) of exchange. That way you could
guarantee traffic doesn't exit your network unless it hasn't got
any choice.

Of course you could tunnel anything you want over a geographic link.
Any LoS laser satellite constellation would presumably do that.

Eugen* Leitl <a href="">leitl</a>
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