@echo off

set IP=""

set match="10.0.61.0"
set net_target="10.73.0.0"
set net_target_mask="255.255.252.0"

for /F "Tokens=3" %%i in ('netstat -rn^|find %match%') do set IP=%%~i
if "%IP%"=="" (
	echo "gateway not set"
) else (
	route delete %net_target% mask %net_target_mask%
	route add %net_target% mask %net_target_mask% %IP%
)