Hi, I have been unable to get online now at home for 4 weeks due to 'self assigned ip address' problem. I have tried every fix I have been able to find including: - Adding a new location - Deleting keychain password in keychain access app. - Renewing DHCP lease - Switching airport off and doing all of the above and then rejoining the network. - Diagnostics - Rebooting the hub several times But still I am getting a self-assigned IP address and am unable to connect. If anyone has any further advice it would be hugely appreciated. For info; Around 3 months ago I started to use time machine as a back-up for an external HDD. I didn't experience this problem immediately - but could this have an impact? I haven't had any major system crashed or any other issues. Thanks in desperation!!!