Job,

On Sun, Jan 29, 2023 at 11:26:02AM +0100, Job Snijders wrote:
> On Wed, Jan 25, 2023 at 05:17:08PM +0000, Sriram, Kotikalapudi (Fed) wrote:
> > Please let us also know if you would have interest in providing an
> > implementation.
> 
> Perhaps it is worthwhile adding a suggestion to the document for BGP
> stack vendors to make it super easy to reject BGP routes that contain an
> AS_SET anywhere in the AS_PATH?

That's intended to be covered by the first paragraph of section 3:
: BGP speakers conforming to this document (i.e., conformant BGP speakers)
: SHOULD NOT locally generate BGP UPDATE messages containing AS_SETs or
: AS_CONFED_SETs. Conformant BGP speakers SHOULD NOT send BGP UPDATE messages
: containing AS_SETs or AS_CONFED_SETs. Upon receipt of such messages,
: conformant BGP speakers SHOULD use the "treat-as-withdraw" error handling
: behavior as per [RFC7606].

I know you want to say "add a knob", but we generally try to avoid talking
about the knobs in IDR specs.

-- Jeff

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