# ifdown eth0 && ifup eth0
There is already a pid file /var/run/dhclient.eth0.pid with pid 6848
killed old client process, removed PID file
Internet Systems Consortium DHCP Client V3.0.2
Copyright 2004 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/products/DHCP

sit0: unknown hardware address type 776
sit0: unknown hardware address type 776
Listening on LPF/eth0/00:0f:b0:73:00:4f
Sending on   LPF/eth0/00:0f:b0:73:00:4f
Sending on   Socket/fallback
DHCPRELEASE on eth0 to 128.210.11.72 port 67
There is already a pid file /var/run/dhclient.eth0.pid with pid 0
Internet Systems Consortium DHCP Client V3.0.2
Copyright 2004 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/products/DHCP

sit0: unknown hardware address type 776
sit0: unknown hardware address type 776
Listening on LPF/eth0/00:0f:b0:73:00:4f
Sending on   LPF/eth0/00:0f:b0:73:00:4f
Sending on   Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 4
DHCPOFFER from 128.211.207.1
DHCPREQUEST on eth0 to 255.255.255.255 port 67
DHCPACK from 128.211.207.1
bound to 128.211.207.134 -- renewal in 2887 seconds.