Okay, I tried how you can do it with Android and found a working path for our debugging.
Install the App IPv6 and More on one of your devices, select Tools and configure it to use 192.168.111.6 as DNS server:
Afterwards, chose a valid domain and click on Dig. If everything works out you should see something like the following (note the QUERY status: NOERROR and that there is a result under ;; ANSWERS:).
