Quick IPv6 related questions

[Alan DeKok]

Panagiotis Georgopoulos wrote:
> a)      Why am I seeing in my radius –X output lines as the following :  
> 
> [unix] IPv6 is not supported!

  The "unix" module stores user login information into a "wtmp" style
file.  It doesn't support IPv6.

> rlm_radutmp: IPv6 not supported!

  Same thing here.  It stores user login information into a "utmp" style
file.  It doesn't support IPv6.

> What could trigger that “IPv6 is not supported” output? Is there
> something that might be going wrong, because clients get authenticated
> successfully as far as I can tell but I am afraid that something else
> might be broken.

  If you don't use "radlast" and "radwho", you can delete the "unix" and
"radutmp" entries from the "accounting" section.

  Nothing else will be affected.

> b)      My FreeRadius machine has “an easy to remember” IPv6 address
> e.g. 2001:a::1 and NAS clients are using this to send packets to FR.
> However it seems that FR is configuring another IPv6 address from the
> router advertisements that it gets from the access network.

  No.  FreeRADIUS doesn't configure IPv6 addresses.  Your OS does.

> The problem
> is that when this happens FR replies to NAS with packets coming from the
> autoconfigured address as source and thus breaks the setup as NAS are
> waiting packets from 2001:a::1. Is there a way to force FR to generate
> packets coming from the manually configured IP (2001:a::1) ?

  Update the "listen" section to bind to that specific IP.

> c)       Is there a plan to get a dual stack FreeRadius? It would be
> really advantageous to be able to run FreeRadius in both ipv4 and ipv6
> at the same time.

  Uh... it's *already* dual stack.  You are running it dual stack right now.

  Alan DeKok.