On Thu, Dec 10, 2015 at 12:06:19PM -0500, Brian Walsh wrote: > It is an Intel 82574L. 8086:10d3
Ok, I have that card. The driver is the e1000e (and not the e1000). Can you send me your iptables script so that I can try and reproduce the problem? > Looking again it appears it may be the opposite of what I thought. > ptp4l is maintaining the > offset value while the hardware clock has switched back to UTC time. I > am not seeing > anywhere that ptp4l is reseting the offset to 0 during this state. Right, it is in the driver or HW. I remember that card resetting the clock after link loss. I complained about this, but Intel said it was as HW limitation, IIRC. However, I wouldn't expect this to happen just from the action of the firewall. That sounds more like a driver bug. Thanks, Richard ------------------------------------------------------------------------------ _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users