If you've ever wanted to know all IP addresses assigned to a machine, you should use WMI:
Get-WMIObject win32_NetworkAdapterConfiguration |
Where-Object { $_.IPEnabled -eq $true } |
Select-Object IPAddress
Where-Object { $_.IPEnabled -eq $true } |
Select-Object IPAddress
You can also connect to remote systems and find out their IP addresses since Get-WMIObject supports a -ComputerName and a -Credential parameter.
