Framed-IP-Address Question

Alan DeKok aland at
Sun Jan 18 21:27:36 CET 2009

Stefan Puch wrote:
> I've got a (maybe stupid) question concerning the Framed-IP-Address which is
> shown when using "radwho".

  It comes from accounting packets.  The content of accounting packets
is whatever the NAS sends.

> With the tool radwho which is provided from freeradius a can easily see which
> clients are connected to the different access-points.
> Now I recognized that for some clients also the local IP-address, which was
> given to the clients from the local dhcp-server, is shown as "Framed-IP-Address"
> when running "radwho -R" but only for SOME clients not for ALL.

  Blame the NAS.

> I would like to write a small script using radwho in order to log the ip-adress
> for each client on login/logout. Sure I could get the ip-address from logfile of
> the dhcp-server, but I would like to do it as easy as possible.

  If the NAS doesn't send this data, you will have to find some other
way to get it for yourself.

> Can anyone tell me why the "Framed-IP-Address" is only shown for some clients
> and what I would have to do that it is show for all clients which are connected
> to local network?

  Different NASes send different data.  The same NAS can send different
data in different circumstances.

  Alan DeKok.

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