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Date: Tue, 30 May 2000 17:05:38 +0900 (JST)
From: tateoka@yasai.forus.or.jp
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Subject: kern/18899: if_vr.c can't bridging properly when bpf is opened.
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>Number:         18899
>Category:       kern
>Synopsis:       if_vr.c can't bridging properly when bpf is opened.
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Tue May 30 01:10:01 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Masamichi Tateoka
>Release:        FreeBSD 4.0-RELEASE i386
>Organization:
A Site ForUs.
>Environment:

	FreeBSD machine with 2 VIA-chip LAN-card

>Description:

	Bridging does not work properly when bpf is opened.

	in vr_rxeof() ( if_vr.c )
	When bpf is opened, a packet to other machines is not passed to
	only the ether_input but also bridging code.

>How-To-Repeat:

	Enable BRIDGE option in the kernel and enable
        sysctl -w net.link.ether.bridge=1
	then, open bpf ( for example, use tcpdump )

>Fix:

	delete checking eh->ether_dhost code in BPF code and BRIDGE code.
	and put it just before the ether_input(ifp, eh, m);


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


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