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Date: Thu, 27 Dec 2001 01:55:07 -0800 (PST)
From: Ron Holloway <ron@maxitec.co.za>
To: freebsd-gnats-submit@FreeBSD.org
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Subject: kern/33234: dummynet localhost pipe causes machine to hang
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>Number:         33234
>Category:       kern
>Synopsis:       dummynet localhost pipe causes machine to hang
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Thu Dec 27 02:00:01 PST 2001
>Closed-Date:
>Last-Modified:
>Originator:     Ron Holloway
>Release:        4.3-STABLE
>Organization:
MAXITEC
>Environment:
FreeBSD mars.maxitec.co.za 4.3-STABLE FreeBSD 4.3-STABLE #0: Sat May 19 13:20:26 SAST 2001     root@mail.itec.co.za:/usr/obj/usr/src/sys/ITEC-MAIL  i386      
>Description:
ipfw pipe for localhost causes machine to hang.

      
>How-To-Repeat:
I executed the following ipfw commands

ipfw add prob 1 pipe 1 tcp from 127.0.0.1 to any in
ipfw pipe 1 config bw 100MByte/s

Then I "telnet localhost 25" which causes the machine to hang.  Not even CTRL-ALT-DELETE works.  I have to do a hard reset to reboot the machine.  All network connections to the machine is also lost.  
>Fix:
      
>Release-Note:
>Audit-Trail:
>Unformatted:

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