udpfromto works for the server but not from radclient

The server operates properly and returns responses from the correct ip addresses out of multiple on the server, but the radtest client refuses to run and returns radclient: socket: cannot initialize udpfromto: Function not implemented The server does not operate correctly when built without udpfromto. The system is a current testing debian and the package is a custom rebuild based on the current git source. Thanks, Joe