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Bug#301249: marked as forwarded (tcptraceroute: Locks up network device

Subject: Bug#301249: marked as forwarded tcptraceroute: Locks up network device unless tcpdump is running
From: Debian Bug Tracking System
Date: Fri, 01 Apr 2005 00:35:36 -0800
Your message dated Thu, 31 Mar 2005 20:29:34 -0500
with message-id <[email protected]>
has caused the Debian Bug report #301249,
regarding tcptraceroute: Locks up network device unless tcpdump is running
to be marked as having been forwarded to the upstream software
author(s) Adrian Irving-Beer <[email protected]>.

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To: Adrian Irving-Beer <[email protected]>
Cc: [email protected]
Cc: "Michael C. Toren" <[email protected]>
Subject: Re: Bug#301249: tcptraceroute: Locks up network device unless
 tcpdump is running
References: <[email protected]>
From: David Coe <[email protected]>
Date: Thu, 31 Mar 2005 20:29:34 -0500
In-Reply-To: <[email protected]> (Adrian Irving-Beer's message
 of "Thu, 24 Mar 2005 12:49:41 -0500")
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Adrian,
I'm unable to reproduce this, with the same kernel and
libraries, but different hardwrae.

Michael,
Any ideas?  What can Adrian tell us to help?

Thanks.

Adrian Irving-Beer <[email protected]> writes:

> Package: tcptraceroute
> Version: 1.5beta6-1
> Severity: important
>
> When used on my laptop (via Ethernet), tcptraceroute fails to
> function, and (IIRC) has done so for as long as I've tried it.
>
> Further, while active, the system cannot receive packets on the
> Ethernet interface, for *any* application.  tcpdump on other machines
> shows that packets are being sent properly, including the
> tcptraceroute packets, but the machine now silently ignores the
> replies and other incoming packets.
>
> Pings freeze with no error messages (but continue to transmit ICMP
> echo-requests) until tcptraceroute is aborted, and incoming pings from
> other machines are ignored.
>
> Running tcpdump on the same system while tcptraceroute is active
> prevents the network 'freeze', but does not allow tcptraceroute to
> receive its own packets.
>
> This occurs both with standard firewalling rules and with all tables
> flushed.  Ethernet is a BroadCom, b44 driver.
>
> -- System Information:
> Debian Release: 3.1
>   APT prefers testing
>   APT policy: (500, 'testing'), (300, 'unstable')
> Architecture: i386 (i686)
> Kernel: Linux 2.6.10-1-686
> Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8)
>
> Versions of packages tcptraceroute depends on:
> ii  libc6                       2.3.2.ds1-20 GNU C Library: Shared libraries 
> an
> ii  libnet1                     1.1.2.1-2    library for the construction and 
> h
> ii  libpcap0.7                  0.7.2-7      System interface for user-level 
> pa
>
> -- no debconf information


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