Here's a session after booting to the 'working' kernel which allows me to do wired networking:

 
$ sudo dhclient -v eth0
[sudo] password for stephen: 
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/eth0/5c:26:0a:7a:26:34
Sending on   LPF/eth0/5c:26:0a:7a:26:34
Sending on   Socket/fallback
DHCPREQUEST of 192.168.1.3 on eth0 to 255.255.255.255 port 67 (xid=0x29a3e672)
DHCPACK of 192.168.1.3 from 192.168.1.1
RTNETLINK answers: File exists
bound to 192.168.1.3 -- renewal in 249326 seconds.
 
$ ip link
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN mode DEFAULT 
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000
    link/ether 5c:26:0a:7a:26:34 brd ff:ff:ff:ff:ff:ff
3: eth1: <NO-CARRIER,BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state DORMANT mode DORMANT qlen 1000
    link/ether d0:df:9a:d8:2b:46 brd ff:ff:ff:ff:ff:ff
 
$ ip addr show dev eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
    link/ether 5c:26:0a:7a:26:34 brd ff:ff:ff:ff:ff:ff
    inet 192.168.1.3/24 brd 192.168.1.255 scope global eth0
    inet6 fe80::5e26:aff:fe7a:2634/64 scope link 
       valid_lft forever preferred_lft forever
 
$ sudo service networking restart
networking stop/waiting
networking start/running
                                                                                                                                                                                                      
$ ip link                                                                                                                                             
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN mode DEFAULT                                                                                                                                   
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00                                                                                                                                                          
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP mode DEFAULT qlen 1000                                                                                                               
    link/ether 5c:26:0a:7a:26:34 brd ff:ff:ff:ff:ff:ff                                                                                                                                                             
3: eth1: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT qlen 1000                                                                                                                         
    link/ether d0:df:9a:d8:2b:46 brd ff:ff:ff:ff:ff:ff                                                                                                                                                             
                                                                                                                                                                                                      
$ ip addr show dev eth0                                                                                                                      
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000                                                                                                                            
    link/ether 5c:26:0a:7a:26:34 brd ff:ff:ff:ff:ff:ff                                                                                                                                                             
    inet 192.168.1.3/24 brd 192.168.1.255 scope global eth0                                                                                                                                                        
    inet6 fe80::5e26:aff:fe7a:2634/64 scope link 
       valid_lft forever preferred_lft forever
 
$ sudo dhclient -v 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/eth0/5c:26:0a:7a:26:34
Sending on   LPF/eth0/5c:26:0a:7a:26:34
Sending on   Socket/fallback
DHCPREQUEST of 192.168.1.3 on eth0 to 255.255.255.255 port 67 (xid=0x7c57d9ba)
DHCPACK of 192.168.1.3 from 192.168.1.1
RTNETLINK answers: File exists
bound to 192.168.1.3 -- renewal in 274400 seconds.