Log onto Azure > Find VM > Operations, Run Command > Run PowerShell Script
Get-NetAdapter | Select-Object InterfaceAlias , InterfaceIndex
Take a note of the InterfaceIndex
Get-DnsClientServerAddress -InterfaceIndex 7
Checks current DNS servers.
Set-DnsClientServerAddress -InterfaceIndex 7 -ServerAddresses (“10.215.153.11″,”168.63.129.16″,”10.230.160.15”)
Sets DNS servers
Register-DnsClient
PS equivalent of Ipconfig /registerDNS
Get-DnsClientServerAddress -InterfaceIndex 7
Check interface for new DNS servers