KMS Server

Windows Server: Using the Key Management Service (KMS) for Activation of Volume-Licensed Systems

A - Install: (In OpenWRT shell)

opkg install wget (if not installed)
opkg update

(Transfer files by SCP, from linux console):
scp luci-app-vlmcsd_1.0.2-1_all.ipk root@192.168.13.1:/tmp/
scp vlmcsd_svn1111-1_ramips_24kec.ipk root@192.168.13.1:/tmp/

(By ssh in OpenWRT):
cd /tmp
opkg install vlmcsd_svn1111-1_ramips_24kec.ipk 
opkg install luci-app-vlmcsd_1.0.2-1_all.ipk 
opkg update

B - Check if the automatic activation is configured correctly: (In windows client shell)

nslookup -type=srv _vlmcs._tcp.lan

C - Establish key management service: (In windows client shell)

slmgr -skms 192.168.13.1

D - Activate: (In windows client shell)

slmgr -ato