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But this is not needed because the mac layer has a default value which will be used if sicslowpan would not set this value.\r\nIn fact changing the max mac transmits setting at the mac layer will therefore not have any effect because of sicslowpan setting a value by itself. This is not a behaviour you would expect or find within a short time without thorough debugging the whole network stack.\r\n\r\nHave been searching for this bug a long time because of network with an insanely high collision percentage and increasing the maximum mac transmit of csma did not have any 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