sudo systemd-resolve --status | more
For the global setting, use the command:
sudo nano /etc/systemd/resolved.conf
The LLMNR value should be to no.
https://www.blackhillsinfosec.com/how-to-disable-llmnr-why-you-want-to/
https://askubuntu.com/questions/1025309/how-can-i-disable-llmnr-in-systemd-resolved