When you're an ISP and you receive a BGP route from a customer with a non-pre-approved community value would you typically just strip the community and call it a day, or would you deny the route altogether? I never have and most likely never will have a chance to view an ISP's BGP configurations so I would appreciate it if you would indulge my curiosity. Also, would you typically preserve local preference communities throughout the AS, or would you strip them off once they are processed?
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