1. A method for filtering duplicate requests for a cache line in an L2 cache, comprising: receiving at the L2 cache a first request and a second request for the cache line, wherein the first request and the second request are received from one or more L1 caches; storing identifying information for the requests in the L2 cache; loading the cache line into a fill buffer of the L2 cache while creating a first load fill packet for the first request; sending the first load fill packet from the L2 cache to at least one of the one or more L1 caches; and after sending the first load fill packet, using the loaded fill buffer and the stored identifying information to send a subsequent load fill packet for the second request from the L2 cache to at least one of the one or more L1 caches.