Still, this is the command:
# dhclient -h
Internet Systems Consortium DHCP Client 4.3.5
Copyright 2004-2016 Internet Systems Consortium.
All rights reserved.
Unknown command: -h
Usage: dhclient [-4|-6] [-SNTPRI1dvrxi] [-nw] [-p <port>] [-D LL|LLT]
[-s server-addr] [-cf config-file]
[-df duid-file] [-lf lease-file]
[-pf pid-file] [--no-pid] [-e VAR=val]
[-sf script-file] [interface]*
exiting.
You have to find the correct lease file, of course...
CCSE / CCTE / CTPS / CCME / CCSM Elite / SMB Specialist