Re: tcpdump broken after rh9 2.4.20-27.9 kernel upgrade

From: Robert Brown (eli_at_typhoon.xnet.com)
Date: 12/28/03

  • Next message: Robert Brown: "Re: problem with ip" 
    To: redhat-list@redhat.com
Date: Sun, 28 Dec 2003 14:09:31 -0600 (CST)

    Robert Brown writes:
    > OK, now I am ready to incriminate the hubs! I started tcpdump on the
    > eth0 port of the NIDS and all it could sniff was packets with its own
    > address or braodcast packets such as arps. I then power cycled the
    > hub. When the hub powered back up, tcpdump siffed 2 packets that did
    > not have its own ip address as either src or dst, then it quit! I
    > power cycled again: same thing -- 2 packets, then nada. It seems that
    > these "hubs" are blocking traffic not destined for a port after a
    > brief period of "proper hub-like" operation.
    >
    > I am not looking forward to the phone call to linksys tomorow. :-<

    I checked the Linksys web page for a tech support number, and it said
    24/7 tech support, so I called. I got a sweet sounding lady with a
    thick Chineese accent. She was obviously trying to fit me into one
    of her pre-scripted categories, as she insisted on determining whether
    I was using the hub for "file sharing" or "connecting to the
    internet", and she also wanted to know the name of my ISP! I asked to
    speak with someone a bit more technical. She asked me to please hold.

    After 15 minutes of hold (God bless speaker phones!) she comes back
    and asks a few more questions trying to show me how "network
    congestion" is causing the packet loss. Good Grief! My kingdom for
    an engineer!

    I think Linksys headquarters is going to receive a call from me
    tomorow morning. 

    -- 
--------  "And there came a writing to him from Elijah"  [2Ch 21:12]  --------
R. J. Brown III  rj@elilabs.com http://www.elilabs.com/~rj  voice 859 567-7311
Elijah Laboratories Inc.    P. O. Box 166, Warsaw KY 41095    fax 859 567-7311
-----  M o d e l i n g   t h e   M e t h o d s   o f   t h e   M i n d  ------
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