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Date: Sun, 24 Sep 2000 23:36:21 -0700 (PDT)
From: x69@x69.net
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Subject: misc/21534: ipfw + bridging + 4.x release = crash
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>Number:         21534
>Category:       misc
>Synopsis:       ipfw + bridging + 4.x release = crash
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Sun Sep 24 23:40:01 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Gerard D.
>Release:        4.1-stable
>Organization:
skycom1
>Environment:
bash-2.04$ uname -a
FreeBSD freebsd.x69.net 4.1-RELEASE FreeBSD 4.1-RELEASE #5: Mon Sep 25 01:02:48 CDT 2000     root@freebsd.x69.net:/usr/src/sys/compile/x69  i386
>Description:
when i enable bridging and firewalling support into the kernel and set a firewall rule ie
ipfw add pipe 1 ip from any to any
ipfw pipe 1 config delay 20ms
or config any pipe it will make the system page fault and crash..
>How-To-Repeat:
add options IPFIREWALL and options DUMMYNET into the kernel
set the sysctl var net.link.ether.bridge=1 and net.link.ether.bridge_ipfw=1 then add a pipe like "ipfw add pipe 1 ip from any to any" then config the pipe like "ipfw pipe 1 config delay 20ms" and soon as any data passes through the bridge it will cause the kernel to pagefault..
>Fix:
i wish i knew..

>Release-Note:
>Audit-Trail:
>Unformatted:


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