[amel27]

как вариант:

Код:

@Echo Off

For /F "Skip=1 Tokens=1" %%i In ('WMIC NICConfig WHERE IPEnabled^=TRUE Get MACAddress^,SettingID') Do Set MAC=%%i
For /F "Delims="  %%i In ('WMIC NIC WHERE MACAddress^="%MAC%" Get NetConnectionID /Value^|Find "="') Do Set "%%i"
If "%NetConnectionID:~-1%"=="" Set NetConnectionID=%NetConnectionID:~,-1%

Echo %NetConnectionID%
Pause >Nul