Error binding to 0.0.0.0 port for port 1812

[jose luis sanchez ortiz]

hello friends I'm desperate because I have to support my graduation project
in 1 week and the radius server AROJA me this error:

Error binding to 0.0.0.0 port for port 1812

I'm using Debian 8 jessie
FreeRADIUS Version 2.2.5

only localhost and the server works in clients.conf.
radtest project radtest 123 1812 testing123 192.168.0.1 (router) does not
work

I got the solution "killall freeradius"
but I run it stops working the

radtest project radtest 123 127.0.0.1 1812 testing123 (localhost)
radtest project radtest 123 1812 testing123 192.168.0.2 (server radius

________________________
the ports no listen

freeradiu 2478     freerad   39u  IPv4  17470      0t0  UDP *:radius
freeradiu 2478     freerad   40u  IPv4  17471      0t0  UDP *:radius-acct
freeradiu 2478     freerad   41u  IPv4  17472      0t0  UDP localhost:18120
freeradiu 2478     freerad   42u  IPv4  17473      0t0  UDP *:1814
freeradiu 2478     freerad   43u  IPv4  17474      0t0  UDP *:34602


thanks in advance. please help me ... and excuse me for my English