Subnet not able to manage e-pmp radio

We are subnetting our network to make management easyer. We have not had issues up untill the today with the following subnet which when used on the e-pmp radios with 2.1 SW cannot be managed.

The radio is set to IP:, Mask, GW

In this configuration we try to open up the web manager page which stays blank. It responds to pings but is not manageble and only a defeult can get the radio back. We have used 172.16.240.x with a mask with no problem on other radios, but the above network network cannot be used for some reason.

It appears to be a bug. Are you seeing this issue in the Firefox browser?

Can you try Chrome or IE and see if you are still having the same issue?