michael@nettle:~$ sudo ifdown -a && sudo ifup -a
[sudo] password for michael: 
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/f2:3c:91:89:6c:ee
Sending on   LPF/eth0/f2:3c:91:89:6c:ee
Sending on   Socket/fallback
DHCPREQUEST of 104.237.134.58 on eth0 to 255.255.255.255 port 67 (xid=0x63d2968b)
DHCPACK of 104.237.134.58 from 50.116.29.9
RTNETLINK answers: File exists
bound to 104.237.134.58 -- renewal in 39757 seconds.
michael@nettle:~$