While restarting an IOC on cdsioc0 this morning I ran into the IETF GPS leap seconds missing web page issue (reported a year ago in alog71075)

   RuntimeError: Error loading leap file: https://www.ietf.org/timezones/data/leap-seconds.list

The local leapsconds file is managed by the tzdata package, after upgrading this on cdsioc0 the problem was resolved. I checked the leapsecond files are correct on workstations and h1guardian1, it looks like cdsioc0 slipped through.