[amel27]

Код:

@echo off
SETLOCAL EnableDelayedExpansion
(
echo:ip              mac
echo:
for /f "tokens=1,2" %%a in ('arp -a^|findstr/brc:" *[0-9]"') do (
 set "$a=%%a        "& set "$b=%%b"
 echo !$a:~,15! !$b:-=!
))>arp.log