[root@demo02 ~]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:0E:A6:76:2F:F9
          inet addr:192.168.21.12  Bcast:192.168.21.255  Mask:255.255.255.0
          inet6 addr: fe80::20e:a6ff:fe76:2ff9/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:87012 errors:0 dropped:0 overruns:0 frame:0
          TX packets:55778 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:17260673 (16.4 MiB)  TX bytes:12588394 (12.0 MiB)
          Interrupt:5 Base address:0x8800

eth1      Link encap:Ethernet  HWaddr 00:40:05:43:07:AA
          inet addr:10.1.1.1  Bcast:10.1.1.255  Mask:255.255.255.0
          inet6 addr: fe80::240:5ff:fe43:7aa/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:36924 errors:1 dropped:0 overruns:0 frame:0
          TX packets:37160 errors:3 dropped:0 overruns:0 carrier:3
          collisions:0 txqueuelen:1000
          RX bytes:10103613 (9.6 MiB)  TX bytes:6195615 (5.9 MiB)
          Interrupt:3 Base address:0xe000

eth2      Link encap:Ethernet  HWaddr 00:01:02:94:0C:40
          inet addr:10.1.2.1  Bcast:10.1.2.255  Mask:255.255.255.0
          inet6 addr: fe80::201:2ff:fe94:c40/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:4241 errors:0 dropped:0 overruns:0 frame:0
          TX packets:708 errors:0 dropped:0 overruns:0 carrier:1
          collisions:0 txqueuelen:1000
          RX bytes:412609 (402.9 KiB)  TX bytes:64376 (62.8 KiB)
          Interrupt:10 Base address:0x2000