eth1      Link encap:Ethernet  HWaddr 00:21:cc:d2:3d:da
          inet6 addr: fe80::221:ccff:fed2:3dda/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:416393 errors:0 dropped:162 overruns:0 frame:0
          TX packets:11876 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:37687251 (37.6 MB)  TX bytes:2835852 (2.8 MB)
          Interrupt:20 Memory:f2500000-f2520000

lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:203751 errors:0 dropped:0 overruns:0 frame:0
          TX packets:203751 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:24354841 (24.3 MB)  TX bytes:24354841 (24.3 MB)

vmnet1    Link encap:Ethernet  HWaddr 00:50:56:c0:00:01
          inet addr:192.168.44.1  Bcast:192.168.44.255  Mask:255.255.255.0
          inet6 addr: fe80::250:56ff:fec0:1/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10661 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

vmnet8    Link encap:Ethernet  HWaddr 00:50:56:c0:00:08
          inet addr:192.168.145.1  Bcast:192.168.145.255  Mask:255.255.255.0
          inet6 addr: fe80::250:56ff:fec0:8/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:10662 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
wlan1     Link encap:Ethernet  HWaddr 84:3a:4b:49:72:c4
          inet addr:192.168.20.1  Bcast:192.168.31.255  Mask:255.255.240.0
          inet6 addr: fe80::863a:4bff:fe49:72c4/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:10678372 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5487769 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:7989057914 (7.9 GB)  TX bytes:2402707478 (2.4 GB)

Dump of /etc/NetworkManager/NetworkManager.conf is:
[main]
plugins=ifupdown,keyfile
dns=dnsmasq

[ifupdown]
managed=true

sudo apt-get install linux-backports-modules-cw-3.4-precise-generic
sudo modprobe alx