@echo off
for /f "tokens=2 delims=:" %%i in ('ipconfig /all^|findstr /c:"IP Address"') do set "oldip=%%i"
for /f "tokens=2 delims=:" %%a in ('ipconfig /all^|findstr /c:"Default Gateway"') do (
   set "wg=%%a"
   for /f "tokens=1-3 delims=. " %%i in ("%%a") do (
       set "wd=%%i.%%j.%%k."
       for /l %%m in (1,1,255) do start /min ping /n 1 %%i.%%j.%%k.%%m
   )
)
arp -a|findstr "dynamic">ip.txt
for /l %%i in (1,1,255) do (
    set "ip=%%i"
    if "%wd%%%i" neq "%wg:~1%" findstr "\<%wd%%%i\>" ip.txt>nul||goto next
)
:next
netsh interface ip set address "本地连接" static %wd%%ip% 255.255.255.0 %wg:~1% 1 >nul
echo 配置前ip为%oldip:~1%，配置后ip为%wd%%ip%
echo 完成配置，请按任意键退出。
pause>nul
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