This guide will show you how to change your DNS on a Technicolor TG582n.
1. First of all login to the router's web interface and then select Home Network from the menu on the left.
2. Now click on Interfaces.
3. Select LocalNetwork. You'll now need to click on configure, in the top right corner.
4. LAN_private is underneath the subheading DHCP Pools. Click on Edit beside this. (If you do not see the edit button, disable DHCP and reload the page)
5. You can now enter the new primary and secondary DNS. Click Apply.