poll for private IP

aa.bash

        echo "nslookup-polling address until found on a private IP"
        set +e # allow errors (for now)

        counter=0
        while true; do
          for addr in 10 172.16 192.168 ; do
            nslookup ${{ inputs.address }} | grep "IP Address: ${addr}" > /dev/null
            if [ "$?" -eq 0 ]; then
              exit 0
            fi
          done
          echo "nslookup not resolving private IP, waiting another 5 seconds..."
          sleep 5

          # try reloading resolved
          sudo systemctl daemon-reload
          sudo systemctl restart systemd-networkd
          sudo systemctl restart systemd-resolved

          counter=$((counter + 1))
          if [ $counter -gt 15 ]; then
            echo "nslookup failed more than 15 times, giving up"
            exit 1
          fi
        done