Loss of Ethernet with BT Home Hub 5
I've just upgraded from BT Home Hub 4 to 5 ahead of having fibre optic broadband and have lost the ability to connect to the internet via my TP-Link AV500 powerline plugs. They worked fine with my Mac Mini (with El Capitan) and HH4. Now, while all the lights on the plug are green, the bottom one doesn't flash indicating that while there is a network nothing is being forwarded to the computer. On my Mac I have the message "Ethernet has a self-assigned IP address and will not be able to connect to the Internet." Meantime wireless is working though because of my circumstances it's a very poor signal and I need an Ethernet connection. Can anyone help please?
Mac Mini, Mac OS X (10.6.2)