Hi Manuel, ntpd keeps printing "Soliciting pool server" in syslog
because it can't contact any of the ntp servers in the pool.  This is
most likely a local configuration problem on your machine or network, or
your service provider's network.

Here are some commands that should help work out where the problem lies.

# Check whether your system can resolve DNS names correctly:
dig 0.ubuntu.pool.ntp.org

# Check whether you can ask for time from these hosts:
ntpdate -d 0.ubuntu.pool.ntp.org

To run the above commands successfully, you'll need the dnsutils and
ntpdate packages installed.  Here's what a successful run might look
like (abbreviated): https://pastebin.ubuntu.com/p/zmzgj4nrwS/

If the dig fails, you've got a problem with DNS resolution.  Check for a
broken local DNS resolver or upstream DNS server.

If the dig succeeds but the ntpdate fails, you might have an outbound
firewall blocking access or connection tracking problem in that
firewall.

If both of the above succeed, but NTP still fails, your problem is
likely a firewall blocking outbound NTP access.

The firewalls might be on your local machine, your local network, or
your ISP's network (unfortunately, the last is more common that it
should be).

Other causes might be a local apparmor profile override which prevents
ntpd from doing DNS lookups.

Hope this helps you track it down!

** Changed in: ntp (Ubuntu)
       Status: New => Incomplete

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https://bugs.launchpad.net/bugs/1797872

Title:
  ntpd keeps Soliciting pool server

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