Re: Dodgy AS327933 ...?

[Mark Tinka <mark@tinka.africa>]

On 8/11/23 12:56, Nick Hilliard wrote:

> bgp is a policy based distance vector protocol. If you can't adjust 
> the primary inter-domain metric to handle your policy requirements, 
> it's not much use.

I am not talking about appending one's own AS in the AS_PATH. I am 
talking about appending someone else's AS in the AS_PATH.

To be fair, I have never had to do that, since I've always thought it 
would be considered bad form. But I suspect that on the simple BGP 
mechanics of it, no vendor would be able to prevent that in any 
meaningful way.

Then again, path hijacking likely wasn't a thought at the time the 
Border Gateway Protocol was being conceived.

Mark.