Modify macOS system network DNS settings
Open System Preferences
Click "Network"
Select the currently connected network card on the left, and then click the "Advanced" button in the lower right corner
Select the "DNS" tab
Click the "+" add button at the bottom left
Enter and add
223.5.5.5
and223.6.6.6
Click "OK" in the lower right corner, you will return to the network panel, click "Apply" again
Finished