[Idr] Mirja Kühlewind's No Objection on draft-ietf-idr-ix-bgp-route-server-11: (with COMMENT)

["Mirja Kuehlewind" <[e-mail]>]

Mirja Kühlewind has entered the following ballot position for
draft-ietf-idr-ix-bgp-route-server-11: No Objection

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COMMENT:
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Quick question: Why is the following statement a SHOULD and not a MUST:
"the route server SHOULD NOT prepend its own AS number to the AS_PATH
   segment nor modify the AS_PATH segment in any other way. "
Is this because the clients might eitherwise not accept the message? 
Maybe add one sentence to explain the SHOULD!