eth0      Link encap:Ethernet  HWaddr 52:54:00:10:15:01  
          inet addr:10.10.21.1  Bcast:10.10.255.255  Mask:255.255.0.0
          inet6 addr: fe80::5054:ff:fe10:1501/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4160173 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4142224 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:330157600 (314.8 MiB)  TX bytes:829965481 (791.5 MiB)

eth1      Link encap:Ethernet  HWaddr 52:54:00:11:15:01  
          inet addr:192.168.21.11  Bcast:192.168.21.255  Mask:255.255.255.0
          inet6 addr: fe80::5054:ff:fe11:1501/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:14433490 errors:0 dropped:0 overruns:0 frame:0
          TX packets:14336956 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:1150821026 (1.0 GiB)  TX bytes:70967872152 (66.0 GiB)

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:16436  Metric:1
          RX packets:3851 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3851 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:398378 (389.0 KiB)  TX bytes:398378 (389.0 KiB)

