Posted by user8446 on Apr 04, 2016; 1:29am
URL: https://itus.accessinnov.com/Update-script-fw-upgrade-tp43p630.html

Make the edit directly in the file: /etc/config/network

In the file, just delete and copy and paste the lan and wan portions of the file I posted above into yours. Don't forget to save. Then reboot: reboot -f