BootP doesn't not work after updating to Exec Firmware version 4.1

Issue
BootP doesn not work after updating to Exec Firmware version 4.1

Product Line
140NOE77101 version 4.1 and greater.

Environment
Windows 7

Resolution
The reason why this happens is because a verification step was added in 'Exec Frimware version 4.1'
This step caused the 140NOE77101 to perform a check for the subnet mask other than 000.000.000.000.
To resolve the problem, specify a subnet mask in the bootp configuration.