Freeradius - radacct session issue

Alan DeKok aland at
Mon Mar 12 12:52:04 CET 2018

On Mar 12, 2018, at 11:00 AM, Pierre Delamotte <pierre.delamotte at> wrote:
> Agreed that the NAS is crappy, but ditching it is not an option for the
> moment (it is one of my main Capwap controller), so I have to leave with it.

  Then complain to the manufacturer, and tell them to fix it.

> Knowing that at least the NAS is signalling Freeradius when it is
> rebooting,

  Is it?  FreeRADIUS has accounting queries which look for a reboot ("Acct-Status-Type = On"), and close all open sessions for that NAS.

  So the problem *should* be fixed on the FreeRADIUS side, if the NAS follows *some* of the RADIUS standards.

> could I consider the option of updating a radacct record
> acctuniqueid (I see that the field is defined as Unique Key NOT NULL)
> targeted by a stop by setting the value to NULL?

  Playing games with the schema is a bad idea.  It's better to fix the problem.

> Should I expect bad side effects?


  The larger questions is why is this happening? Even if the NAS re-uses Acct-Session-Id values, FreeRADIUS will create and use Acct-Unique-Session-Id.  Which will solve the problem.

  So... *why* are these sessions being re-opened?

  Right now, you're trying random solutions.  It would be much better to find the *problem*.  Which then leads you to the correct solution.

  Alan DeKok.

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