I had the same problem with the router WL889RT4, it was written
Getting IP from DHCP server
Internet: down
then i opened the webpage of manufacturer, downloaded new firmware
 WL889RT4_Streamyx_Router.zip ( 1.9mb ) Number of downloads: 253

then extracted and via menu i upgraded the firmware and new options appeared in it. I made DISABLED the option of VLAN and internet began to work. When it was ticked to enabled the problem remained. I don't know what is the reason, anyhow now it works properly

This post has been edited by mitch81: Mar 9 2015, 11:14 AM