The linuxptp-daemon container image ships its own version of the leap-seconds.list file, overwriting the one provided by the tzdata package [1][2]. This file has an expiration date of June 28, 2023. After this expiration date, ts2phc fails to parse the file and shows the following error message in the logs:

nmea: unable to find utc time in leap second table

This errors prevents ts2phc from working, since it discards all information received from the GNSS device file.

[1] - https://github.com/openshift/linuxptp-daemon/blob/master/extra/leap-seconds.list
[2] - https://github.com/openshift/linuxptp-daemon/blob/master/Dockerfile#L26

Seen on OpenShift 4.13.x

Always

1. podman run -it quay.io/openshift/origin-ptp:4.13 sh
2. cat /usr/share/zoneinfo/leap-seconds.list

Expiration date shown in the file is:

#    Updated through IERS Bulletin C64
#    File expires on:  28 June 2023
#
#@    3896899200

Expiration date should be the same as the file provided by https://www.ietf.org/timezones/data/leap-seconds.list:

#	Updated through IERS Bulletin C65
#	File expires on:  28 December 2023
#
#@	3912710400