Apple's [http://www.apple.com/airportexpress/ Airport Express] has and [http://www.apple.com/airportextreme/ Airport Extreme] have some funky settings that make it hard to use with other networking devices, including your Amahi server.

There is no option This trick also applies to disable the AT&T Uverse routers that do not enable to control DHCP in the Airport admin tool, so what you need to do is trick it into being "more pasive"by their users.

* There is no option to disable the DHCP in the Airport admin tool, so what you need to do is trick it into being "more passive". # Set DHCP Beginning Address and DHCP Ending Address to the pool same value: the IP address of addresses your HDA# Create a DHCP Reservation (static IP): enter your HDA MAC address and IP address  :'''NOTE:''' If the Airport Administration tool forces you to only have at least two IP in the DHCP address pool (i.e. if, when entering the same IP address in Ending Address, it adds one to it), it should work fine two. You'll just need to create a second DHCP reservation, and enter any fake MAC address(aa.bb.cc.dd.ee.ff for example). * Set This will basically allow the lease length DHCP server to 8000 days or something long* Have a computer request an only give out one IP address while , and it will only give it to your HDA (if your Amahi HDA is offline* After thatever configured to use DHCP, which it shouldn't). All other DHCP requests will be ignored, put Amahi back onlineallowing your HDA DHCP server to be used for all computers on your local network.* Disconnect the Airport Express* Have BTW, it's much easier if you don't want NAT (i.e. if you have another router that same computer request an address* After does that ), then you can turn on the Airport Expressdisable both NAT and DHCP by choosing bridge mode.You just can't disable DHCP alone.