That took a bit to find. Not so much a "button" but a check box hidden in the "About" box and defaulting to on.

Now if you could stop it doing this on bootup :

Jun 13 16:16:03 dnsmasq[4171]: query[A] time.nist[dot]gov from 192.168.3.64
Jun 13 16:16:03 dnsmasq[4171]: query[A] time-nw.nist[dot]gov from 192.168.3.64
Jun 13 16:16:03 dnsmasq[4171]: query[A] time.windows[dot]com from 192.168.3.64
Jun 13 16:16:03 dnsmasq[4171]: query[A] time-a.nist[dot]gov from 192.168.3.64
Jun 13 16:16:03 dnsmasq[4171]: query[A] time-b.nist[dot]gov from 192.168.3.64
Jun 13 16:16:03 dnsmasq[4171]: query[A] time-ios.apple[dot]com from 192.168.3.64
Jun 13 16:16:03 dnsmasq[4171]: query[A] time.apple[dot]com from 192.168.3.64
Jun 13 16:16:03 dnsmasq[4171]: query[A] time.asia.apple[dot]com from 192.168.3.64
Jun 13 16:16:03 dnsmasq[4171]: query[A] 0.android.pool.ntp[dot]org from 192.168.3.64
Jun 13 16:16:03 dnsmasq[4171]: query[A] 1.android.pool.ntp[dot]org from 192.168.3.64
Jun 13 16:16:03 dnsmasq[4171]: query[A] 2.android.pool.ntp[dot]org from 192.168.3.64
Jun 13 16:16:03 dnsmasq[4171]: query[A] 3.android.pool.ntp[dot]org from 192.168.3.64
Jun 13 16:16:03 dnsmasq[4171]: query[A] pool.ntp[dot]org from 192.168.3.64

And this for the remainder of the time :

Jun 13 07:06:45 dnsmasq[4171]: query[A] time.nist[dot]gov from 192.168.3.64
Jun 13 08:06:45 dnsmasq[4171]: query[A] time.nist[dot]gov from 192.168.3.64
Jun 13 09:06:45 dnsmasq[4171]: query[A] time.nist[dot]gov from 192.168.3.64
Jun 13 10:06:45 dnsmasq[4171]: query[A] time.nist[dot]gov from 192.168.3.64
Jun 13 11:06:45 dnsmasq[4171]: query[A] time.nist[dot]gov from 192.168.3.64
Jun 13 12:06:45 dnsmasq[4171]: query[A] time.nist[dot]gov from 192.168.3.64
Jun 13 13:06:46 dnsmasq[4171]: query[A] time.nist[dot]gov from 192.168.3.64
Jun 13 14:06:46 dnsmasq[4171]: query[A] time.nist[dot]gov from 192.168.3.64
Jun 13 15:06:46 dnsmasq[4171]: query[A] time.nist[dot]gov from 192.168.3.64
Jun 13 16:06:46 dnsmasq[4171]: query[A] time.nist[dot]gov from 192.168.3.64

Why is it issuing queries for NTP servers when it has 2 configured and functioning ntp servers on the network?

Edit : Had to edit the last dot out of each address to get past the filter.

  @Fae Okay cant test cause I use OC200 V1

  @Brad_C 

I redirected NTP calls to external sources to my NTP server on the NAS but yeah those NTP servers are frickin annoying in the FW logs AND why soooooo many

Pugs wrote

  @Brad_C 

 

I redirected NTP calls to external sources to my NTP server on the NAS but yeah those NTP servers are frickin annoying in the FW logs AND why soooooo many

  @Pugs 

I have all my embeded devices on an isolated subnet with a dedicated local-only logging dns server. The WAPs happily pick up their time from the local NTP server they are configured for, but they also try and hit a whole list on startup and then hit time_nist_gov every hour regardless.

That's not nice behavior, particular for the poor owner of the NTP server they're hitting.

TP-Link even have form (along with another long list of offenders) at ntp server abuse. Tried to put links in, but blocked at every turn by the forum.

  @Fae 

Any further news on this please (and compatible with OC200 V1)?

  @Fae 

What about the Omada Software Controller?

Not only does it ignore the option when set to not use the TPLink Cloud, it doubles down by bypassing the local network DNS servers by using hard-coded external DNS servers! This is beyond unacceptable!

As an example, this log file containing 87 hours of logs shows 4,231 DNS queries attempting to bypass by local network's DNS servers:

# egrep "n-deventry-smb.tplinkcloud.com|n-use1-devs-smb.tplinkcloud.com" /var/log/messages | grep query | wc -l
4231
 

That's an average of 49 queries per hour over the 3.5 days from Omada Software Controller v5.9.9! 

With Cloud Access disabled:

Why has this not been addressed as well, and when will it be stopped?

  @Fae 

Thank you for the fast reply.

All 3 settings are and have always been disabled, going back many release versions:

And the admin account is a local user type:

I see no settings in Maintenance similar to what you describe -- only "Backup & Restore", "Auto Backup", and "Export for Support" sections. This is the Ubuntu DEB file image.

I have clicked through every possible link in the entire interface multiple times on multiple occasions -- any setting that is remotely connected to something outside my local network or is a cloud-related setting has always been disabled.

What other settings can I review or change?