Comment 2 for bug 1779621

Apparently the issue is just that chrony is not starting up on boot:

$ journalctl -r -u chrony | head -n 20
-- Logs begin at Thu 2018-05-31 12:51:22 WEST, end at Mon 2018-07-02 09:23:49 WEST. --
Jul 02 09:08:04 coulson chronyd[7131]: Selected source 194.8.30.16
Jul 02 09:06:58 coulson chronyd[7131]: Source 91.189.91.157 replaced with 2001:67c:1560:8003::c8
Jul 02 09:06:57 coulson chronyd[7131]: Selected source 91.189.94.4
Jul 02 09:06:49 coulson systemd[1]: Started chrony, an NTP client/server.
Jul 02 09:06:49 coulson chronyd[7131]: Frequency 21.345 +/- 0.131 ppm read from /var/lib/chrony/chrony.drift
Jul 02 09:06:49 coulson chronyd[7131]: chronyd version 3.2 starting (+CMDMON +NTP +REFCLOCK +RTC +PRIVDROP +SCFILTER +SECHASH +SIGND +ASYNCDNS +IPV6 -DEBUG)
Jul 02 09:06:49 coulson systemd[1]: Starting chrony, an NTP client/server...
-- Reboot --
Jun 29 16:01:41 coulson systemd[1]: Stopped chrony, an NTP client/server.
Jun 29 16:01:41 coulson systemd[1]: Stopping chrony, an NTP client/server...
Jun 29 16:01:41 coulson chronyd[14657]: chronyd exiting
Jun 29 15:56:41 coulson chronyd[14657]: Source 195.22.17.7 online
Jun 29 15:56:41 coulson chronyd[14657]: Source 88.157.128.22 online
Jun 29 15:56:41 coulson chronyd[14657]: Source 80.172.224.24 online
Jun 29 15:56:41 coulson chronyd[14657]: Source 91.189.89.198 online
Jun 29 15:56:41 coulson chronyd[14657]: Source 194.8.30.16 online
Jun 29 15:56:41 coulson chronyd[14657]: Source 2001:67c:1560:8003::c8 online
Jun 29 15:56:41 coulson chronyd[14657]: Source 2001:67c:1560:8003::c7 online
Jun 29 15:56:41 coulson chronyd[14657]: Source 91.189.89.199 online

even though it seems to be enabled:

$ systemctl is-enabled chrony
enabled