I had the same issue but managed to fix by doing the follwing:
- Log into your WN3000RP via www.mywifiext.net (accessible only on your network) from a locally connected computer on your extender.
- username: admin, password: password
- Click IP Address Setup and change it to use Static IP Address.the numbers below are my settings, but should work well for netgear routers.
- IP Address: 192.168.1.250
- IP Subnet Mask: 255.255.255.0
- Gateway IP Address: 192.168.1.1 - this is your router's ip address on the network
- Primary DNS: 192.168.1.1
- An easy way to make sure you have the correct numbers above, in osx go to network > advanced > TCP/IP and compare, the last 3 digits of the IP Address for Extender (above i set it to 250) needs to be a unique number, different than your macbook)
- Finally, Login to your router (in my case that was a Netgear WNDR3700 v1 with the latest firmware) and manually assign an ip address for the WN3000RP (in my case Lan Setup > Address Reservations > Add)
After this, all of your devices should connect properly using automatic settings. I had 2 computers, 2 ipads and 2 iphones that all connected fine but my xbox 360 and apple tv could not obtain an ip address until i used the above method. Hope it helps.