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Date: Wed, 3 May 1995 21:20:14 +0200
From: System Operator <operator@alano.diatel.upm.es>
Reply-To: jmrueda@diatel.upm.es
To: FreeBSD-gnats-submit@freebsd.org
Subject: Using tcpdump with DC21040 Ethernet card halts network
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>Number:         379
>Category:       kern
>Synopsis:       Using tcpdump with DC21040 Ethernet card halts network
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs (FreeBSD bugs mailing list)
>State:          closed
>Quarter:
>Keywords:
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Wed May  3 12:30:01 1995
>Closed-Date:    Sat May 6 23:58:01 PDT 1995
>Last-Modified:
>Originator:     Javier Martin Rueda
>Release:        FreeBSD 2.1.0-Development i386
>Organization:
>Environment:
950412-SNAP

	

>Description:

I wanted to look at the packets received from a certain host on the net,
so I decided to use tcpdump for this. However, when I started tcpdump,
the kernel wrote to the console the following message:

de0: enabling 10baseT/UTP port

And from then on, all network connectivity is halted. The console still
works, but the ethernet card doesn't (no more telnet, ftp, not even ping).

Note that when the computer boots and the ethernet card is probed and
attached it says:

de0: enabling Thinwire/AUI port

So, it seems the kernel is trying to change the type of ethernet port to
an incorrect one. My card is a SMC 8432BT (BNC and RJ45 connectors, though
I only use the BNC).

	

>How-To-Repeat:

Execute the following command:

tcpdump -i de0 -w file host myhost

	

>Fix:
	Not known, sorry.

	

>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed 
State-Changed-By: davidg 
State-Changed-When: Sat May 6 23:58:01 PDT 1995 
State-Changed-Why:  
This bug was fixed in rev 1.24 of if_de.c. 
>Unformatted:



