I am running a Raspberry Pi 3 as a weather station at home, and it will crash every couple of days. When I restart, the only clue in syslog is:
Apr 15 13:35:27 weather systemd: Time has been changed Apr 15 13:35:27 weather ntpd: receive: Unexpected origin timestamp 0xde7ce04f.465baf92 does not match aorg 0000000000.00000000 from firstname.lastname@example.org xmt 0xde7dc58f.70ff4546
/etc/ntp.conf is pointing to pool.ntp.org.
The server has a static IP address on an internal LAN.
Perplexed. Any ideas why this is happening?