v2.1 - txts never available under non-PTP traffic load
Peter has noticed that when non-PTP traffic (60-74 bytes, ~200mbps) is
transmitted through the pipelined WB MAC I/F, timing of WRPC gets
corrupted. He starts observing warning messages from WRPC console
shell:
Warning: tx timestamp never became available
and 1-PPS signal starts drifting away the Master reference.