Save the local receive and remote transmit timestamp needed for (re)starting the symmetric protocol when no valid reply was received separately from the timestamps that are used for synchronization of the local clock. This extends the interval in which the local NTP state is (partially) protected against replay attacks in order to complete a measurement in the interleaved symmetric mode from [last valid RX, next TX] to [last TX, next TX], i.e. it should be the same as in the basic mode. |
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