Linux - Networking This forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game. |
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01-13-2010, 02:51 AM
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#1
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Member
Registered: Sep 2005
Distribution: Suse
Posts: 56
Rep: 
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communication without loopback device
Hi all,
I have two ethernet card on my computer, I want to make a TCP or UDP communication between these two cards, so I disable loopback:
#ifconfig lo down
but with out loopback I can't even ping an eth from another one. how should I do? I want traffic to really pass eth cards.
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01-13-2010, 04:50 AM
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#2
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LQ Guru
Registered: Jan 2006
Location: Ireland
Distribution: Slackware, Slarm64 & Android
Posts: 16,286
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This is very messy, if not impossible. Much software needs the 'lo' interface, and the shortest route between 2 nics is along the pci bus. Others have tried this, and given up.
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01-13-2010, 05:24 AM
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#3
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LQ Guru
Registered: Aug 2001
Location: Fargo, ND
Distribution: SuSE AMD64
Posts: 15,733
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Do you want to route traffic between two networks or subnets? If so, look at the "route" command.
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