@echo off
set PDC=192.168.6.1
set PDCNAME=GATEKEEPER

set BDC=192.168.89.1
set BDCNAME=KEYMASTER

set mydrive=H:
net use %mydrive% /DELETE

echo ####### %0 #######

for /f "tokens=2,* delims=:" %%A in ('ipconfig ^| find "Gateway"') do set GATEWAY=%%A
set GATEWAY=%GATEWAY:~1%
echo GATEWAY=%GATEWAY%

if /I %GATEWAY% == %PDC% (
  echo using %PDCNAME% as HOMESERVER ...
  net use %mydrive% \\%PDCNAME%\%USERNAME%
)

if /I %GATEWAY% == %BDC% (
  echo using %BDCNAME% as HOMESERVER ...
  net use %mydrive% \\%BDCNAME%\%USERNAME%
)

echo ####### %0 #######