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Solved
R7000 DHCP creating multiple IP addresses for one device
I noticed that my R7000 is creating multiple IP addresses for an Apple Airport Extreme (3rd gen) and an Apple Airport Express (2nd gen). When I view the Access Control list, it shows both devices eating up all the available DHCP addresses. For example, the Express is showing 192.168.254.2, 192.168.254.3, 192.168.254.4, etc but the associated MAC addresses are all the same. Both are wired into the router and have been assigned static IP addresses. If I ping one of the "extra" IP addresses (using Terminal in OSX), I see this (where 192.168.254.85 is the static address):
PING 192.168.254.2 (192.168.254.2): 56 data bytes
36 bytes from 192.168.254.85: Redirect Host(New addr: 192.168.254.2)
If I reboot everything, it clears things up temporarily. But over time, these two Apple devices will start using up all of the available DHCP addresses. I've tried toggling the "Disable IGMP Proxying" checkbox. And I also changing the RIP version to RIP_1. Both of the Apple devices are set up in Bridge Mode.
I can't tell if this is actually hurting anything except that new devices can't connect since there are no available IP addresses. I noticed this about a week ago and just updated the router firmware to V1.0.5.48_1.1.79. However, the problem is still persisting.
Glad it's working again,
I think static and reserved get confused more often than not. Some think they are the same which they are not. I believe using address reservations is the best way to avoid problems on SOHO networks, If you want to assign same IP's to certain devices. This also let's you leave all devices to DHCP when on home network they are assigned a specific IP and when traveling you don't have to change settings.
I use 30 reserved addresses and the DHCP works fine and doesn't need any special settings to avoid the reserved IP's. Not sure I understand the setttings you selected for the two apples But, the thing to remember is ONLY one DHCP server per network.