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Reload this Page why does my laptop pc have a eth0 and eth1 when i only have 1 network card?
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Old 09-17-2008, 02:32 PM   #1
neilcpp
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why does my laptop pc have a eth0 and eth1 when i only have 1 network card?

is this a bug or can anyone explain this clearly?
 
Old 09-17-2008, 02:44 PM   #2
pixellany
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Open a terminal and enter:
dmesg|grep ^eth

This will tell you the devices which are being assigned to eth0 and eth1. We're looking for lines that are similar to this:
Quote:
eth0: Tigon3 [partno(BCM5752KFBG) rev 6002 PHY(5752)] (PCI Express) 10/100/1000Base-T Ethernet 00:19:b9:21:2a:f6
 
Old 09-17-2008, 03:43 PM   #3
AuroraCA
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Does your laptop have both wifi and a wire network connector?
 
Old 09-17-2008, 03:57 PM   #4
neilcpp
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its just got a single realtek device.- it a fijitsu 1020
 
Old 09-17-2008, 05:20 PM   #5
pixellany
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How about my request???
 
Old 09-18-2008, 01:21 PM   #6
neilcpp
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hi, dmesg|grep ^eth gives this:
eth0:RealTek RTL8139 at 0xe000. 00:f0:01:99:e4, IRQ 9
eth0: Identified 8139 chip type 'RTL-8139C'
eth1394: eth0: IEEE-1394 IPv4 over 1394 Ethernet (fw-host0)
eth1: link down

- get the picture? i dont understand what eth1 is or why wit is there.
 
Old 09-18-2008, 03:28 PM   #7
pixellany
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You could also try lspci for clues.
If you don't find it, don't worry about it (As long as your system is working OK)
 
Old 09-18-2008, 06:17 PM   #8
normscherer
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IEEE 1394 is also known as firewire. For some reason you have networking turned on on your firewire port. Just go into networking tools (depending on distribution) and turn off networking on that interface.
 
Old 05-26-2009, 11:23 AM   #9
vincentq
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Exactly
Quote:
Originally Posted by normscherer View Post
IEEE 1394 is also known as firewire. For some reason you have networking turned on on your firewire port. Just go into networking tools (depending on distribution) and turn off networking on that interface.
eth1394 is the module that allows for Ethernet over FireWire networking, which is really awesome/fast (much more so than 'proper' Ethernet). If you don't use it, don't mind it much, it doesn't hurt.

PS: I used my Linux box as router with it, since I only had one ethernet card:
Internet <->(ethernet)<-> Linux box <->(eth1394)<-> Win box
Last edited by vincentq; 05-26-2009 at 11:26 AM. Reason: Update
 
Old 05-26-2009, 03:01 PM   #10
farslayer
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Blacklist the suggested module.. eth1394 and that network interface will go away.

http://wiki.debian.org/KernelModuleBlacklisting
 
  


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