[please trim your quotes] On Sat, 2009-12-12 at 22:40 +1100, Vitalik Nikolyenko wrote: > Sorry for not being very clear. I'm capturing on C and just want to > check if B acked A's frame (if that's possible) Oh. Of course, just check if you see an ACK frame. You can't see whether it arrived on A, of course, or if maybe B sent it, A received it, but C didn't for some reason. johannes
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