After upgrade to RHEL 7.5 PTP does not work any more

Issue

After updating a rhel server to any kernel version higher than kernel-3.10.0-755.el7, PTP (ptp4l ) stopped working.

There are logs in the /var/log/messages :

Jul 26 08:23:36 tell112p ptp4l: ptp4l[160183.230]: selected best master clock 3ca82a.fffe.eb571a
Jul 26 08:23:36 tell112p ptp4l: [160183.230] selected best master clock 3ca82a.fffe.eb571a
Jul 26 08:23:37 tell112p ptp4l: ptp4l[160183.892]: port 1: delay timeout
Jul 26 08:23:37 tell112p ptp4l: ptp4l[160183.893]: delay   filtered        655   raw        659
Jul 26 08:23:38 tell112p ptp4l: ptp4l[160184.892]: port 1: delay timeout
Jul 26 08:23:38 tell112p ptp4l: ptp4l[160184.893]: delay   filtered        656   raw        659
Jul 26 08:23:39 tell112p ptp4l: ptp4l[160185.892]: port 1: delay timeout
Jul 26 08:23:39 tell112p ptp4l: ptp4l[160185.894]: delay   filtered        656   raw        666
Jul 26 08:23:40 tell112p ptp4l: ptp4l[160186.892]: port 1: delay timeout
Jul 26 08:23:40 tell112p ptp4l: ptp4l[160186.894]: delay   filtered        657   raw        658
Jul 26 08:23:41 tell112p ptp4l: ptp4l[160187.892]: port 1: delay timeout
Jul 26 08:23:41 tell112p ptp4l: ptp4l[160187.894]: delay   filtered        657   raw        654
Jul 26 08:23:42 tell112p ptp4l: ptp4l[160188.893]: port 1: delay timeout
Jul 26 08:23:42 tell112p ptp4l: ptp4l[160188.894]: delay   filtered        656   raw        651
Jul 26 08:23:42 tell112p ptp4l: ptp4l[160189.382]: port 1: announce timeout

Jul 26 08:25:37 tell112p phc2sys: [160304.281] reconfiguring after port state change
Jul 26 08:25:37 tell112p phc2sys: [160304.281] selecting p6p1 for synchronization
Jul 26 08:25:37 tell112p phc2sys: [160304.281] nothing to synchronize