I currently have a Netgear ADSL modem/router connected to the telephone master socket, which has DHCP enabled. I then have a wired connection to an Apple Time Capsule in Bridge Mode, which is a wireless access point for one end of my house, then, via a long, wired connection at the other end of the house (few other devices and switches along the way) is an Apple Airport Extreme in Bridge Mode, which is my wireless access point for the other end of the house. Both of these apple devices have the same SSID and passwords, so they are automatically switched between when walking from one end of the house to the other with any wireless phones, tablets etc.
Recently I have noticed that we've been getting a few IP conflicts (another device on this network is using the same IP Address) which I can't figure out, as the DHCP pool I have given on the Netgear is from 192.168.0.100 – 192.168.0.254. There are no static ip's allocated on the network that fall within this range. Any static ip's that are allocated to a few machines are between 192.168.0.1 – 192.168.0.90.
We have about 10 'wired' devices on the network that use DHCP and probably about 7 or 8 wireless devices that use DHCP.
So I'm wondering what might be the cause of the occasional IP conflict message (which ends up with me usually rebooting the netgear which sorts things out), and what might be a way around it?
I started playing with the Apple Time Capsule, changing it from Bridge Mode to DHCP & NAT mode, and disabling DHCP on the netgear, as the DHCP on the Time Capsule offers a couple more options than the netgear (things like lease time etc), but when I did that, it started giving warnings of Double DHCP etc, even though I'd turned off DHCP on the netgear, so for now I've reverted back to the original configuration above.
Best Answer
Something else is offering DHCP.
Try turning off DHCP on the netgear while leaving it off on the ATC and see if you still get an address. It would appear from your symptoms that you might. Then you can track down what's doing that...