Autodesk has posted the updated flex license manager, it's 11.11 for the 2014 release. Remember, the license manager is backward compatible so it will grant licenses for older programs. You will (sooner or later) encounter licensing problems if you continue to use the older license managers with newer license files (including 2014). So, get your updated license manager now.
If you're in a strict IPV6 environment then you'll want to download/install the IPV6 version.
If you're running in a mixed IPV4/IPV6 environment, then download & install the IPV4 version.
For more information on why you should upgrade the license manager see:
To see the system requirements for the 11.11 version of flexlm see the Autodesk general solution: