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    SubjectRe: Ethernet Error Correction
    On Tue, Oct 02, 2001 at 11:48:01AM +0200, Pavel Machek wrote:
    > Hi!
    > > > > Also, generic PROMISC mode still drops off received frames
    > > > > with CRC error.
    > > >
    > > > Hmm, sounds good. Someone should create tool for communication over
    > > > ethernet with broken crc's. Such communication would be stealth from
    > > > normal tcpdump. Do it on your provider's network to escape accounting ;^)
    > >
    > > But still you'll see the number of errors on your eth card
    > > skyrocketing, so you'd grow quite suspicious.
    > Yep, but it would be _very_ hard for you to find the cause. You'd
    > probably chase ghosts trying to replace cables, etc, never finding
    > what happens.

    Well, if you checked all the cables, you'd most likely find the device
    capable of sending the bad CRC frames. Also, if you use a switch (not ha
    hub or coax), it won't work at all.

    Vojtech Pavlik
    SuSE Labs
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