On Tue, Jan 04, 2011 at 04:38:19AM -0800, Akmal Shahbaz <akmal_shah...@yahoo.com> wrote a message of 443 lines which said:
> I am looking for example routing policies when any AS receiving BGP > advertisement changes Origin AS in BGP AS set attribute to remove > the received AS number and puts its own AS number.[legitimate cases] When the old origin AS was a private one? Today, with 32bits AS, everyone should have a public AS number but, in the real world, some people do BGP with private AS that the upstream provider has to change.
