I have issue with resolving name servers on my Rasberry Pi runing ARM Ubuntu server 20.04 LTS. Every time I ping for example Google.com i got:
ping: google.com: Temporary failure in name resolution
This device is reaciving DNS from my router, and it is only affected device.
user@user:~$ nmcli dev show wlan0 | grep IP4 IP4.ADDRESS: 192.168.0.2/24 IP4.GATEWAY: 192.168.0.1 IP4.ROUTE: dst = 0.0.0.0/0, nh = 192.168.0.1, mt = 600 IP4.ROUTE: dst = 192.168.0.0/24, nh = 0.0.0.0, mt = 600 IP4.DNS: 192.168.0.2 IP4.DNS: 188.8.131.52