lkml.org 
[lkml]   [2003]   [Sep]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: dual ethernet ports problem.
    Adarsh Daheriya wrote:
    > hi all,
    >
    > i have got a system which has 2 eth ports. i use one of them (eth0) to
    > "network boot" the system
    > using dhcp, tftp and then mount the nfs file system on it.
    >
    > this leaves the other port (eth1) unusable. i cannot ping to the other
    > system through it.
    > but when i ping any of the two eth ports from some other system i get
    > the reply back.
    > but to my amazement the mac entries of both the ports is that of eth0 in
    > arp table. (arp command)
    >
    > why and how eth0 is acting as a proxy (perhaps) for both the ports and
    > how can i disable it?
    >
    > could anybody please help me in this concern.

    Both ports on the same subnet/switch/etc perchance?

    Linux replies to an IP address out of any port it cares to.[1] I've
    seen this come up a number of times, but I can't seem to find references
    to it in google.... Ah, wait, try this:
    http://www.cs.helsinki.fi/linux/linux-kernel/2002-16/0676.html
    LWN writeup about this: http://lwn.net/Articles/45373/
    (Google for 'linux-kernel ping route IP MAC wrong' w/o quotes.)

    HTH,

    Eli

    [1] Over-simplification to the extreme, and probably wrong to boot. 8)
    --------------------. "If it ain't broke now,
    Eli Carter \ it will be soon." -- crypto-gram
    eli.carter(a)inet.com `-------------------------------------------------

    -
    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to majordomo@vger.kernel.org
    More majordomo info at http://vger.kernel.org/majordomo-info.html
    Please read the FAQ at http://www.tux.org/lkml/

    \
     
     \ /
      Last update: 2005-03-22 13:48    [W:0.022 / U:1.288 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site