User`s manual

Test Condition
Ping Primary
Domain Name
Server
Pass: Indicates that the device can communicate with the
primary Domain Name Server (DNS).
Fail: Indicates that the device was unable to communicate with
the primary Domain Name Server (DNS). It may not have an
effect on your Internet connectivity. Therefore, if this test fails
but you are still able to access the Internet, there is no need to
troubleshoot this issue.
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