dhcp-static.yaml

---
- name: Convert DHCP IP to Static on Windows
  hosts: win-mig
  gather_facts: no
  collections:
    - ansible.windows

  vars:
    interface_name: "Ethernet"

  tasks:

    - name: Get current network info from DHCP
      ansible.windows.win_shell: |
        $nic = Get-NetIPConfiguration -InterfaceAlias "{{ interface_name }}"
        $obj = New-Object PSObject -Property @{
          IP = $nic.IPv4Address.IPAddress
          Mask = $nic.IPv4Address.PrefixLength
          Gateway = $nic.IPv4DefaultGateway.NextHop
          DNS = ($nic.DnsServer.ServerAddresses -join ",")
        }
        $obj | ConvertTo-Json
      register: netinfo
      args:
        executable: powershell

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

    - name: Show detected DHCP details
      debug:
        msg:
          - "DHCP IP: {{ ipinfo.IP }}"
          - "Mask Prefix: {{ ipinfo.Mask }}"
          - "Gateway: {{ ipinfo.Gateway }}"
          - "DNS: {{ ipinfo.DNS }}"
    - name: Convert DHCP IP to Static
      ansible.windows.win_shell: |
        New-NetIPAddress `
          -InterfaceAlias "Ethernet" `
          -IPAddress "{{ ipinfo.IP }}" `
          -PrefixLength {{ ipinfo.Mask }} `
          -DefaultGateway "{{ ipinfo.Gateway }}"
      args:
        executable: powershell