Buffalo with DD-WRT not applying static ip address

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Not sure what’s going on here. I have a Buffalo that came with DD-WRT v24SP2-MULTI(04/12/11)_std firmware.

I go into Services tab and under Static Leases set a Windows Server 2008 R2 machine’s MAC address to a static IP, but it’s not working. I set the static IP to but this setting is ignored and the machine is given an IP address by DHCP, which results in random addresses like or so.

So then I set Static IPv4 address on the machine itself. This works… mostly, except sometimes for some reason the machine likes to change its supposedly static IP address to something completely out of the subnet that is like

Very very weird, I haven’t got a clue what’s going on. I’ve never had this happened to me before.


To set a static IP in Server 2008, follow the instructions on TechNet.

The IPv4 address indicates DHCP error.

You should not have to set up the static IP on the router itself. Make sure that the IP address you are assigning your server is not in the DHCP range.

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