Batch script to toggle a network adapter between static IP and DHCP for TP-Link router recovery mode access.

ToggleNetworkIP.bat

@echo off
REM ==========================================================
REM Title: Toggle Network Adapter IP Between Static and Automatic
REM Description:
REM   This batch script toggles the IP configuration of a specified
REM   network adapter between a static IP and automatic (DHCP)
REM   configuration. It is designed for use with TP-Link router
REM   recovery mode. The script assigns a static IP address when
REM   DHCP is enabled, and reverts to automatic IP configuration
REM   if a static IP is already set.
REM Usage:
REM   1. Replace "Ethernet" with the name of your network adapter
REM      if it differs from "Ethernet".
REM   2. Save the script as a .bat file (e.g., ToggleIP.bat).
REM   3. Run the script with administrator privileges to apply
REM      the changes.
REM ==========================================================

REM Set the network adapter name
REM Replace "Ethernet" with your adapter name if different
set "adapter_name=Ethernet"

REM Set the desired static IP address and subnet mask
REM The IP address 192.168.0.66 is used for accessing TP-Link
REM router recovery mode
set "ip_address=192.168.0.66"
set "subnet_mask=255.255.255.0"

REM Check if DHCP is enabled (automatic IP)
REM Extract whether DHCP is enabled or not from the adapter's IP configuration
for /f "tokens=2 delims=:" %%A in ('netsh interface ip show config name^="%adapter_name%" ^| findstr /C:"DHCP enabled"') do set "dhcp_status=%%A"

REM Remove any leading spaces from the dhcp_status variable
set "dhcp_status=%dhcp_status: =%"

REM Conditional logic to toggle IP configuration
if "%dhcp_status%"=="Yes" (
    REM If DHCP is enabled, set the static IP and subnet mask
    netsh interface ip set address name="%adapter_name%" static %ip_address% %subnet_mask%
    echo DHCP was enabled. Changed IP to %ip_address% with subnet mask %subnet_mask%.
    echo Note: IP %ip_address% is used for TP-Link router recovery mode.
) else (
    REM If DHCP is not enabled, revert to automatic IP configuration
    netsh interface ip set address name="%adapter_name%" source=dhcp
    echo Static IP was set. Now switched to obtaining IP address automatically.
)