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Old 05-15-2009, 06:03 AM   #1
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What does this ifconfig output mean?

Hi guys

I have been using FC6 and FC10 for quite a few months now. My network connection and functionality all work just 100% fine.

Just for curiosity's sake, I did "ifconfig -a" today, and saw this:

[root@development ~]# /sbin/ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:0E:A6:38:E5:E4
          inet addr:  Bcast:  Mask:
          inet6 addr: fe80::20e:a6ff:fe38:e5e4/64 Scope:Link
          RX packets:433074 errors:0 dropped:0 overruns:0 frame:0
          TX packets:218496 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:109619940 (104.5 MiB)  TX bytes:20758314 (19.7 MiB)

lo        Link encap:Local Loopback
          inet addr:  Mask:
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:5510 errors:0 dropped:0 overruns:0 frame:0
          TX packets:5510 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:4037844 (3.8 MiB)  TX bytes:4037844 (3.8 MiB)

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)

[root@development ~]#
The "eth0" and "lo" parts I've seen many times before, they are fine. However, what the heck does the "sit0" part mean?? I only have one network card (eth0, a 3com card, on board) in my system, and "lo" I know is the local loopback.

What is "sit0"??
Old 05-15-2009, 06:11 AM   #2
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Check this out:
Old 05-15-2009, 06:13 AM   #3
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sitX is used for ipv6 over ipv4 (tunneling ipv6 thru a ipv4 connection). sit stands for: simple internet transition.

Feed your search engine with sit0 for a lot more info.


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