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I've changed jobs and been off the NANOG list for some time, so please excuse the question. I know some providers (such as SPRINT) filter BGP routing announcements based on minimum announcement size. The questions are: 1) Who all has such policies? 2) What are the specific sizes and address blocks being filtered? 3) Do they affect "portable" (provider independent) and "non-portable (provider supplied) addressing in the same way. Thanks.
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