BT SmartHub 2 Enable IP Subnets Outside 192.168.X.X range

BT-SmartHub-2.txt

Rather annoying that the BT SmartHub hub 2 cannot have IP addresses assigned which are outside the 192.168.X.X range 

My WAN side of my network has the 10.15.0.1 while my network side has 10.25.0.1 and i did not want to change this. 

Here is some code which will allow you to set ANY ip and DHCP range to your BT SmartHub 2

1) goto the IPV4 page where you change the IP address of the router
2) open your browsers javascript console. Normally you can right click, anywhere on the page, and click inspect, then click the console tab
3) enter the following into the console changing the values as you need and hit enter. 

###########
dhcpStart="10.15.0.2";
dhcpEnd="10.15.0.255";
gatewayIP="10.15.0.1";
subnetMask="255.255.0.0";
###########

4) now paste in the following code

###########
setCfg("ip4addr", gatewayIP);
setCfg("ip4mask", subnetMask);
setCfg("dhcp4s_eb", "1");
setCfg("dhcp4pool_s", dhcpStart);
setCfg("dhcp4pool_e", dhcpEnd);
setCfg("dhcp_change", "1");
sendForm("my_network.htm", "", "");
sending = 1;
statusChange("statusSavingChange","statusChangeNTBsaved");
glo_changeNeedSave=0;
var page = "http://"+gatewayIP;
setTimeout( function(){location.href =page;}, 3000);
############

You should be redirected to your new IP. For me the first time i did this, DHCP was still assigning 192.168.X.X until i restarted the router
If you cannot access the BT SmartHub 2, manually set your IP on your computer to something in your new range. 

If all else fails, just factory restore the BT SmartHub 2 and try again