Je ne trouve rien sur google...

je poste ce que j'obtiens dans le fichier log openvnp :
Nov 11 18:25:55 2013 NOTE: OpenVPN 2.1 requires '--script-security 2' or higher to call user-defined scripts or executables
Mon Nov 11 18:25:55 2013 Diffie-Hellman initialized with 1024 bit key
Mon Nov 11 18:25:55 2013 Control Channel Authentication: using 'ta.key' as a OpenVPN static key file
Mon Nov 11 18:25:55 2013 Outgoing Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
Mon Nov 11 18:25:55 2013 Incoming Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
Mon Nov 11 18:25:55 2013 TLS-Auth MTU parms [ L:1560 D:168 EF:68 EB:0 ET:0 EL:0 ]
Mon Nov 11 18:25:55 2013 Socket Buffers: R=[87380->131072] S=[16384->131072]
Mon Nov 11 18:25:55 2013 TCP/UDP: Socket bind failed on local address [undef]: Address already in use
Mon Nov 11 18:25:55 2013 Exiting
Merci de votre aide