Change default gateway using *netipaddress* cmdlet

Question

Hi, is there a way to change the DFG after the IP is assigned to an adapter?
I am using Server 2012. I created a new IP using "new-netipaddress -Ipaddress 1.2.3.4 -prefixlength 24 -interfaceindex 10". I have forgotten to add the -defaultgateway parameter in the command. IP address was sucessfully assigned, but I cannot figure out
a way to change/add a default gateway.
Does anyone know how to do it via native powershell cmdlets (no gwmi, functions or scripts)?
Cheers

Answer 1

I am having a similar problem and using Remove-NetIPAddress does not really help. Remove-NetIPAddress does not affect gateway settings and gateways remain assigned to the net adapter. Furthermore, after I use RemoveNetIPAddress cmdlet, the NetTCPIP\Get-NetIPConfiguration
cmdlet starts producing a non-terminating error. Here is a repro script:
PS C:\> $IPAddress = '192.168.0.1'
PS C:\> $DefaultGateway = '192.168.0.1'
PS C:\>
PS C:\> # Enumerate NIC configurations.
PS C:\> $networks = NetTCPIP\Get-NetIPConfiguration
Exception setting "NetProfile": "Cannot convert the "System.Object[]" value of type "System.Object[]" to type
"Microsoft.Management.Infrastructure.CimInstance"."
At C:\Windows\system32\WindowsPowerShell\v1.0\Modules\NetTCPIP\NetIPConfiguration.psm1:128 char:13
+             $IPConfig.NetProfile = Get-NetConnectionProfile -InterfaceAlias $IfA ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], SetValueInvocationException
    + FullyQualifiedErrorId : ExceptionWhenSetting
PS C:\> # Look for NIC that is not on corpnet.
PS C:\> $privateNetwork = $networks | ? { $_.IPv4Address.PrefixOrigin -ne 'Dhcp'}
PS C:\> $privateNetworkName = $privateNetwork.InterfaceAlias
PS C:\> $privateNic = NetAdapter\Get-NetAdapter -Name $privateNetworkName
PS C:\> $privateNic | NetTCPIP\Set-NetIPInterface -Dhcp Disabled
PS C:\> $privateNic | NetTCPIP\Remove-NetIPAddress -Confirm:$false
PS C:\> $privateNic | NetTCPIP\New-NetIPAddress -IPAddress $IPAddress -PrefixLength 24 -DefaultGateway $DefaultGateway
NetTCPIP\New-NetIPAddress : Instance DefaultGateway already exists
At line:1 char:15
+ $privateNic | NetTCPIP\New-NetIPAddress -IPAddress $IPAddress -PrefixLength 24 - ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidArgument: (MSFT_NetIPAddress:ROOT/StandardCimv2/MSFT_NetIPAddress) [New-NetIPAddr
   ess], CimException
    + FullyQualifiedErrorId : Windows System Error 87,New-NetIPAddress