We're seeing some strange packet dropping behavior with a monitoring host on PacBell DSL - if we send two packets back to back, the probability that both get dropped is actually higher than the probability of losing one packet if it's sent alone. We're trying to explain the behavior to understand in what situations some of our tools won't work, and I'd like to chat with someone in the know. (PacBell's trouble@ address didn't seem like the right place). Or, if anyone knows what kind of traffic shaping equipment or other such would exhibit that behavior, I'd love to know. The only places we've seen this are on DSL and Cable modem links. Thanks! -Dave -- work: dga@lcs.mit.edu me: dga@pobox.com MIT Laboratory for Computer Science http://www.angio.net/