Two ip addresses on Hassbian 1.1

I have two ip addresses on my network for my pi running Hassbian 1.1. They share a MAC address. Any ideas why this is?
Cheers!

Just taking a stab at it but one for the ethernet and one for the wifi?

I have ethernet connected and have not set up wifi. Indeed when I unplug the ethernet both ip disappear from the network. ifconfig shows them both as Ethernet…?

You’ve checked that there isn’t a second system allocated the same IP? If you’ve allocated the IP statically it could be that your DHCP server is also dishing out IP addresses in that range.

I had this raspberry pi setup with static IP for a previous HA installation, but didn’t setup static IP for this one. I suppose the MAC address is hardware related so even if I put a fresh SD card in the pi my router would still consider this to be the same computer?

So, what are the 2 IP addresses that have that MAC address? Are the MAC addresses for your wlan0 and eth0 interfaces different on the Pi.

OK this is terribly embarrassing, but the MAC addresses were very similar, but slightly different, and not identical as I said. I’ve now confirmed which is the ethernet and which the wifi. Thanks for your help!

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