How many legitimate cases when Origin AS in BGP announcement changed by another AS?

Stephane Bortzmeyer bortzmeyer at
Tue Jan 4 10:27:39 CST 2011

On Tue, Jan 04, 2011 at 08:22:35AM -0800,
 Akmal Shahbaz <akmal_shahbaz at> wrote 
 a message of 44 lines which said:

> >>When the old origin AS was a private one? 
> NO.Even when old origin AS is not private one.

You misunderstood me. I replied to your query "When is it legitimate
to change an origin AS?" by adding a possibility you did not mention:
"When the origin AS is a private one".

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