You must enter the IP address of at least on Internet DNS (Domain Name System) server here. This service is normally provided by your ISP and the addresses of their DNS servers should have been supplied to you when your Internet account was created.
The format you must enter the IP address is "nnn.nnn.nnn.nnn" where each "nnn" is a decimal number between 0 and 255, for example "158.152.1.43".
If your ISP has more than one DNS server, you may enter several addresses
with a single space between them, but this field should Never be
left blank.