From mboxrd@z Thu Jan  1 00:00:00 1970
From: tedheadster <tedheadster@gmail.com>
Subject: Re: mlx4_en SIOCSHWTSTAMP cycles the link
Date: Tue, 17 Dec 2013 07:06:38 -0500
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Cc: Shawn Bohrer <shawn.bohrer@gmail.com>,
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> After hacking around the SIOCSHWTSTAMP issue I've noticed that ptp4l
> synchronizes the PHC, however there must be another bug somewhere
> because it creates a 35 second offset from the PTP master.

There is an option to ptp4l to account for this. You would use "-O 35"
when starting ptp4, or perhaps '-O -35' (I forget exactly).

- Matthew