ptp4l[162058.926]: ethtool
ptp4l[162058.926]: phc_device: /dev/ptp3
ptp4l[162058.926]: selected /dev/ptp3 as PTP clock
ptp4l[162058.929]: port 1: INITIALIZING to LISTENING on INIT_COMPLETE
ptp4l[162058.930]: port 0: INITIALIZING to LISTENING on INIT_COMPLETE