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  1. #1

    Kernel/network Routing, Kernel/Network Routing

    I have a question maybe someone can help with.

    The O/S I am running is pretty much a vanilla install of Fedora Core 3.

    I have two NIC's in the machine. Eth0 and Eth1

    I am attempting to separate the two networks and its traffic.

    Here is an image:

    ETH0 has a network of mask and gw
    ETH1 has a network of mask and gw

    Since I have to have a default gateway, I have it set to

    However, all traffic from the ETH1 goes out the default gateway, which I guess makes sense.

    I attempted to add a gw for that network through the route command, so I get

    Kernel IP routing table
    Destination Gateway Genmask Flags MSS Window irtt
    Iface UG 0 0 0
    eth1 U 0 0 0
    eth1 U 0 0 0
    eth0 UG 0 0 0

    However the outbound traffic from IP still goes out the default gateway.

    My goal is to essentially create a router or something that directs all traffic for each network to its proper gateway.

    Thanks in advance for any help.


  2. #2
    Linux Enthusiast puntmuts's Avatar
    Join Date
    Dec 2004
    Republic Banana
    It is possible A good read is .
    You could think of using conditional multipath routing using a firewall mark using iptables . I made something like that some years ago and that worked. I head three external ip's in the same network but that is history

    But I think you will find means to accomplish this when reading the HOWTO, at least I did .
    Good luck
    I\'m so tired .....

  3. #3
    Linux Enthusiast
    Join Date
    Feb 2005
    SE, Stockholm
    But what happens to your routing table when you add an extra default route at your command shell?
    route add -net -netmask gw eth1

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