~$ sudo dhclient3
There is already a pid file /var/run/dhclient.pid with pid 7251
killed old client process, removed PID file
Internet Systems Consortium DHCP Client V3.0.4
Copyright 2004-2006 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/eth0/00:01:6c:da:70:40
Sending on   LPF/eth0/00:01:6c:da:70:40
Sending on   Socket/fallback
DHCPREQUEST on eth0 to 255.255.255.255 port 67
DHCPACK from 62.162.165.1
bound to 62.162.165.125 -- renewal in 21017 seconds.