The value of the object tmnxLocUsrDbDhcpDefMsapGroupIf specifies
the name of the group interface where Managed SAP's are
created when there is no Radius server available, or the Radius
server does not specify the group interface.
While the value of sapTlsDefMsapGroupIf is the empty string,
no Managed SAP's are created when there is no Radius server-specified
group interface available.