Did check that - shows as installed but inactive, which is what I expected 
having disabled it via systemctl.

Also tried using ptp4l -i enp9s0 -m -2, no change to the results.

Best regards,
Alan

-----Original Message-----
From: Richard Cochran [mailto:richardcoch...@gmail.com] 
Sent: Thursday, December 15, 2016 2:50 PM
To: Taber, Alan (US) <alan.ta...@lmco.com>
Cc: linuxptp-users@lists.sourceforge.net
Subject: EXTERNAL: Re: EXTERNAL: Re: [Linuxptp-users] PTP packets not being 
acted upon by RHEL 7 server

On Thu, Dec 15, 2016 at 08:06:38PM +0000, Taber, Alan wrote:
> Thanks, Richard. We're running IPv4 only. I'll check into Layer2 and report 
> back.
> 
> Since my previous email I've tried the same ptp4l -i enp9s0 -m on a second 
> server on the network, and it also is ignoring the other two asserting 
> sources and declaring itself as the master clock, and I see announce and sync 
> packets from all three sources on Wireshark. So there's something in the 
> setup of the servers that is preventing them from listening for those packets.

Firewall?

Thanks,
Richard


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