Hi !

I installed two nic cards on the machine.
this is the output of ifconfig -a
eth0 Link encap:Ethernet HWaddr 00:50:8B:B8:EA:19
inet addr:213.137.71.58 Bcast:213.137.71.255 Mask:255.255.255.0
inet6 addr: fe80::250:8bff:feb8:ea19/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:5465 errors:0 dropped:0 overruns:0 frame:0
TX packets:706 errors:0 dropped:0 overruns:0 carrier:0
collisions:10 txqueuelen:1000
RX bytes:621440 (606.8 Kb) TX bytes:133384 (130.2 Kb)

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:35 errors:0 dropped:0 overruns:0 frame:0
TX packets:35 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4233 (4.1 Kb) TX bytes:4233 (4.1 Kb)

sit0 Link encap:IPv6-in-IPv4
NOARP MTU:1480 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

Does sit0 is the second card ?

thanks !!

sit0 is usually a wifi card

No... sit0 is nothing to do with WiFi.

sit0 is to do with IPv6 and tunnels (in this case it looks like it's tunnelling IPv6 connections through your IPv4 setup)

WiFi cards will identify themselves as wlan0, wlan1 etc

lo is the loopback interface.

Ethernet (nic) cards will be eth0, eth1 etc. I suspect the second interface you are looking for is called eth1.

Oh wow! I really blew that one. You are absolutely correct. My wifi is dealing with ipv6, so I wrote that. Send coffee! I am asleep