win-mig.yaml

- hosts: win-mig
  gather_facts: no
  collections:
    - ansible.windows

  tasks:

    # 1. Detect active interface automatically
    - name: Detect actual interface
      ansible.windows.win_shell: |
        (Get-NetIPConfiguration | Where-Object {$_.IPv4Address}).InterfaceAlias
      register: iface
      args:
        executable: powershell

    - name: Set interface fact
      set_fact:
        interface_name: "{{ iface.stdout_lines[0] | trim }}"

    # 2. Get current DHCP information
    - name: Get current network info from DHCP
      ansible.windows.win_shell: |
        $nic = Get-NetIPConfiguration -InterfaceAlias "{{ interface_name }}"
        $obj = [PSCustomObject]@{
          IP      = $nic.IPv4Address.IPAddress
          Mask    = $nic.IPv4Address.PrefixLength
          Gateway = $nic.IPv4DefaultGateway.NextHop
          DNS     = ($nic.DnsServer.ServerAddresses -join ",")
        }
        $obj | ConvertTo-Json -Depth 4
      register: netinfo
      args:
        executable: powershell

    - name: Convert JSON to dict
      set_fact:
        ipinfo: "{{ netinfo.stdout | trim | from_json }}"

    # 5. Apply static IP
    - name: Apply static IP
      ansible.windows.win_shell: |
        New-NetIPAddress `
          -InterfaceAlias "{{ interface_name }}" `
          -IPAddress "{{ ipinfo.IP }}" `
          -PrefixLength {{ ipinfo.Mask }} `
          -DefaultGateway "{{ ipinfo.Gateway }}"
      args:
        executable: powershell

    # Override DHCP DNS → your custom DNS
    - name: Set static DNS servers (192.168.1.250, 8.8.8.8)
      ansible.windows.win_shell: |
        Set-DnsClientServerAddress `
          -InterfaceAlias "{{ interface_name }}" `
          -ServerAddresses @("192.168.1.250","8.8.8.8")
      args:
        executable: powershell