Ubuntu 20.04 DNS Resolution

dns.sh

# Installing resolvconf in Ubuntu
sudo apt update
sudo apt install resolvconf

# Start
sudo systemctl start resolvconf.service
sudo systemctl enable resolvconf.service
sudo systemctl status resolvconf.service

# Edit Nameserver Entries
sudo vim /etc/resolvconf/resolv.conf.d/head
# Add "nameserver 8.8.8.8" or whatever IP you want for your upstream DNS

# Restart
sudo systemctl restart resolvconf.service
sudo resolvconf -u