I have a GuruPlug Server 003-GP0001 running Debian Linux 6.0.3 with FreeRadius 2.1.10 installed.
I have followed the Basic Configuration HOWTO, but when I get to the point of starting the server for the first time, I get this error:
Fri Nov 11 18:31:49 2011 : Info: Loaded virtual server inner-tunnel
Fri Nov 11 18:31:49 2011 : Info: Loaded virtual server <default>
Fri Nov 11 18:31:49 2011 : Error: Failed binding to authentication
address 127.0.0.1 port 18120 as server inner-tunnel: Cannot assign
requested address
Fri Nov 11 18:31:49 2011 : Error: /etc/freeradius/sites-enabled/