root@2[hammer]# dhclient eth1
Internet Systems Consortium DHCP Client V3.0.3
Copyright 2004-2005 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/products/DHCP

SIOCSIFFLAGS: Timer expired
SIOCSIFFLAGS: Timer expired
Listening on LPF/eth1/00:30:b4:00:00:00
Sending on   LPF/eth1/00:30:b4:00:00:00
Sending on   Socket/fallback
receive_packet failed on eth1: Network is down
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 7
send_packet: Network is down
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 9
send_packet: Network is down
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 5
send_packet: Network is down
No DHCPOFFERS received.
No working leases in persistent database - sleeping.
root@2[hammer]#