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root@mws64:~# ifconfig 
eth1      Link encap:Ethernet  HWaddr 00:13:46:3b:8b:c5  
          inet addr:192.168.0.111  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::213:46ff:fe3b:8bc5/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1738 errors:0 dropped:27 overruns:0 frame:0
          TX packets:1258 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:180015 (175.7 KiB)  TX bytes:179696 (175.4 KiB)
          Interrupt:16 Base address:0x4000 

eth1:name1 Link encap:Ethernet  HWaddr 00:13:46:3b:8b:c5  
          inet addr:172.16.1.5  Bcast:172.16.1.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:16 Base address:0x4000 

eth1:name2 Link encap:Ethernet  HWaddr 00:13:46:3b:8b:c5  
          inet addr:172.16.2.5  Bcast:172.16.2.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:16 Base address:0x4000 

eth1:name3 Link encap:Ethernet  HWaddr 00:13:46:3b:8b:c5  
          inet addr:172.16.3.5  Bcast:172.16.3.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:16 Base address:0x4000 

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:151 errors:0 dropped:0 overruns:0 frame:0
          TX packets:151 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:13456 (13.1 KiB)  TX bytes:13456 (13.1 KiB)

root@mws64:~# echo 1 >  /proc/sys/net/ipv4/ip_forward 
root@mws64:~#