Scripts i (ab)use

Config NIC as DHCP Client -->

$IPType = "IPv4"
$adapter = Get-NetAdapter | ? {$_.Status -eq "up"}
$interface = $adapter | Get-NetIPInterface -AddressFamily $IPType

If ($interface.Dhcp -eq "Disabled") {
    # Remove existing gateway
    If (($interface | Get-NetIPConfiguration).Ipv4DefaultGateway) {
        $interface | Remove-NetRoute -Confirm:$false
    }

    # Enable DHCP
    $interface | Set-NetIPInterface -DHCP Enabled

    # Configure the  DNS Servers automatically
    $interface | Set-DnsClientServerAddress -ResetServerAddresses
}

Config NIC with static IP -->

$IP = "172.29.106.41"
$MaskBits = 27 # 24 = 255.255.255.0 | 27 = 255.255.255.224
$Gateway = "172.29.106.62"
$Dns = "172.29.10.69"
$IPType = "IPv4"

# Retrieve the network adapter that you want to configure
$adapter = Get-NetAdapter | ? {$_.Status -eq "up"}

# Remove any existing IP, gateway from our ipv4 adapter
If (($adapter | Get-NetIPConfiguration).IPv4Address.IPAddress) {
    $adapter | Remove-NetIPAddress -AddressFamily $IPType -Confirm:$false
}

If (($adapter | Get-NetIPConfiguration).Ipv4DefaultGateway) {
    $adapter | Remove-NetRoute -AddressFamily $IPType -Confirm:$false
}

# Configure the IP address and default gateway
$adapter | New-NetIPAddress `
    -AddressFamily $IPType `
    -IPAddress $IP `
    -PrefixLength $MaskBits `
    -DefaultGateway $Gateway

# Configure the DNS client server IP addresses
$adapter | Set-DnsClientServerAddress -ServerAddresses $DNS