On Tue, Feb 28, 2023 at 09:36:07AM +0100, Erez wrote:
> On Tue, 28 Feb 2023 at 01:49, Andrew Zaborowski <andrew.zaborow...@intel.com>
> > Since the default behaviour changes, in principle this could break
> >
> 
> May break when using non Linuxptp, as far as I understand, linuxptp only
> sets the field, but never checks the value.

The risk is that some hardware implementations may check those fields
and then fail to generate time stamps.

In the case of the PTP minor version field, there are already two
known bad HW devices that fail when the field is non-zero.  Of course,
this violates 1588-2008, but it proves the point that vendors don't
follow the standard.

As a result, customers of those vendors get on our list and complain
the linuxptp is broken!

Thanks,
Richard


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