DNS create fails due to network unreachability

• The command dns create fails with following error:

cluster1::> vserver services name-service dns create -domains domain1.local -name-servers 10.xx.xx.20

Error: command failed: Failed to verify the specified DNS configuration.
       10.xx.xx.20: No route to host.
       Verify that the network configuration is correct and that DNS servers are available. Specify "-skip-config-valid           ation" to skip the configuration validation.

• Ping to the DNS IP fails:

cluster1::> network ping -lif lif1 -vserver svm1 -destination 10.xx.xx.20

no answer from 10.xx.xx.20