cemoi@cemoi-gusty:~$ sudo /etc/init.d/networking restart
 * Reconfiguring network interfaces...                                          There is already a pid file /var/run/dhclient.eth0.pid with pid 10779
killed old client process, removed PID file
Internet Systems Consortium DHCP Client V3.0.5
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/eth0/00:0e:a6:43:f4:33
Sending on   LPF/eth0/00:0e:a6:43:f4:33
Sending on   Socket/fallback
DHCPRELEASE on eth0 to 192.168.0.1 port 67
There is already a pid file /var/run/dhclient.eth0.pid with pid 134519120
Internet Systems Consortium DHCP Client V3.0.5
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/eth0/00:0e:a6:43:f4:33
Sending on   LPF/eth0/00:0e:a6:43:f4:33
Sending on   Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4
DHCPOFFER from 192.168.0.1
DHCPREQUEST on eth0 to 255.255.255.255 port 67
DHCPACK from 192.168.0.1
bound to 192.168.0.10 -- renewal in 110578 seconds.
Ignoring unknown interface eth1=eth1.
Ignoring unknown interface eth2=eth2.
Ignoring unknown interface ath0=ath0.
Ignoring unknown interface wlan0=wlan0.
Set 'tap0' persistent and owned by uid 1000
                                                                         [ OK ]
cemoi@cemoi-gusty:~$