Since the morning of July 25, every time I boot ntpd fails to contact the time server. The problem is that it can no longer resolve the timeservers 0.pool.ntp.org, etc. in /etc/ntp.conf. I found that on July 25, there was a change in the administration of these servers:
So that must have been the immediate cause. If I type
it fails. However, if I explicitly tell it to use one of the DNS servers my router uses, it works:
host 0.pool.ntp.org 18.104.22.168
Now my router internally knows about these DNS servers, and if I use the DNS test in the router configuration, it works. My machine uses the router as its DNS server, and somehow the lookup for these particular hosts isn't being passed through properly. I tried resetting the router, no change. Do I need to do something on the OS side?