Hello Nikos, On Tue, Sep 27, 2016 at 03:37:18PM +0200, Nikos Mavrogiannopoulos wrote: > > The unique session ID is a freeradius generated field. As far as I > understand you can make it be generated without the port. > http://freeradius.org/radiusd/man/rlm_acct_unique.txt you are right. After excluding NAS-Port from the attributes which are used as base for the key the ID stays the same. So - great, the issue is solved. Thanks a lot, Martin