Re: [Linuxptp-users] Synchronisation

[Keller, J. E <jac...@in...>]

> -----Original Message-----
> From: Richard Cochran [mailto:ric...@gm...]
> Sent: Friday, June 15, 2018 7:47 AM
> To: Jord Pool <jor...@ou...>
> Cc: Cliff Spradlin via Linuxptp-users <lin...@li...>
> Subject: Re: [Linuxptp-users] Synchronisation
> 
> On Fri, Jun 15, 2018 at 09:59:04AM +0000, Jord Pool wrote:
> > So I found that when launching ptp4l it automatically assigns itself
> > a /dev/ptp* device. One time it assigns /dev/ptp2, another time it
> > assigns /dev/ptp4 etc very random. I have a total of 5 devices:
> > /dev/ptp0, /dev/ptp1, /dev/ptp2, /dev/ptp3 and /dev/ptp4.
> 
> How many MACs do you have? Five or more?
> 
> If `ptp4l -i enp0s25` chooses different /dev/ptp* every time you stop
> and start again, then something is very broken in your kernel.  (After
> a reboot, however, the /dev/ptp* number might have changed.  That is
> why you can only give ptp4l the interface.)
> 

Yea, does ethtool -T continuously change /dev/ptpX devices on you? That is probably a kernel or driver bug...

Thanks,
Jake