I have BT Infinity, a Business Hub 3 and 5 static IP Addresses. One of the addresses was allocated to a CCTV DVR, this failed and was replaced under maintenance. The new DVR obviously has a different MAC address and I have allocated it my last spare address. However, I can't find or re-use the original address allocated to the DVR that was replaced. It seems to me that the only way to make a static address available again is the router needs to to see the device it's currently allocated to so that you can de-select the static address. I can't do this as the old DVR was taken away by the maintenance contractor. How can I get that address back as I'd like to re-use it for something else?
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