sudo dhclient -4 -v -d -1 eth0
Internet Systems Consortium DHCP Client 4.2.4
Copyright 2004-2012 Internet Systems Consortium.
All rights reserved.
For info, please visit
https://www.isc.org/software/dhcp/Listening on LPF/eth0/bc:5f:f4:60:eb:8d
Sending on LPF/eth0/bc:5f:f4:60:eb:8d
Sending on Socket/fallback
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0x70bdedfc)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0x70bdedfc)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 (xid=0x70bdedfc)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 7 (xid=0x70bdedfc)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 13 (xid=0x70bdedfc)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 20 (xid=0x70bdedfc)
DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 20 (xid=0x70bdedfc)