sudo rm -rf /etc/resolv.conf && \
sudo touch /etc/resolv.conf && \
echo 'nameserver 10.30.72.17' | sudo tee -a /etc/resolv.conf && \
echo 'nameserver 10.30.72.18' | sudo tee -a /etc/resolv.conf && \
sudo systemctl restart systemd-resolved && \
sudo resolvectl flush-caches

sudo rm -rf /etc/resolv.conf && \
sudo touch /etc/resolv.conf && \
echo 'nameserver 8.8.8.8' | sudo tee -a /etc/resolv.conf && \
echo 'nameserver 1.1.1.1' | sudo tee -a /etc/resolv.conf && \
sudo systemctl restart systemd-resolved && \
sudo resolvectl flush-caches