我的 OpenBSD 主机正在运行 NTPD，但慢了 26 秒，尽管它说“时钟同步”：
user@host:~# ntpctl -sa
4/4 peers valid, clock synced, stratum 3
peer
wt tl st next poll offset delay jitter
216.239.35.0 time1.google.com
1 10 2 1063s 1078s -1.951ms 101.103ms 0.594ms
216.239.35.4 time2.google.com
* 1 10 2 481s 1067s -1.742ms 112.251ms 0.447ms
216.239.35.8 time3.google.com
1 10 2 729s 991s -1.472ms 11.454ms 0.169ms
216.239.35.12 time4.google.com
1 10 2 830s 1051s -2.203ms 268.285ms 8.564ms
/etc/ntpd.conf 内容：
server time1.google.com
server time2.google.com
server time3.google.com
server time4.google.com
/etc/rc.conf.local 内容：
nsd_flags=
ntpd_flags=-s …