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Subject: zebra interface flags problem on 4.7-RC2 (IFF_PROMISC)
From: "Vladimir B. " Grebenschikov <vova@sw.ru>
To: sumikawa@FreeBSD.org
Cc: freebsd-net@freebsd.org, sobomax@freebsd.org
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Hi

I have tried to install fresh zebra (from ports) on 4.7-RC2

have a problem - zebra turns on promiscuity mode on interface,
it is completely unacceptable when interface connected to HUB (not
switch) - router begins resend all packets.

# ifconfig fxp1
fxp1: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet 193.125.143.129 netmask 0xffffff00 broadcast
193.125.143.255
        ether 00:a0:c9:41:a3:a3
        media: Ethernet autoselect (10baseT/UTP)
        status: active
# zebra -d
2002/10/04 16:33:42 ZEBRA: can't get ip6forwarding value
# ifconfig fxp1
fxp1: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 
1500
        inet 193.125.143.129 netmask 0xffffff00 broadcast
193.125.143.255
        ether 00:a0:c9:41:a3:a3
        media: Ethernet autoselect (10baseT/UTP)
        status: active


Nothing special in zebra config, just installed 4.7-RC2, just upgraded
zebra.

I am not sure is it Zebra-related or FreeBSD-related problem
digging into zebra code do not show any abnormal interface flags
installed.

May be problem related to following commit:

date: 2002/08/30 14:23:38;  author: sobomax;  state: Exp;  lines: +25 -4
MFC: user-setable promisc mode. The code is slightly diffrent (and
uglier)
than in HEAD, because we have had to preserve kernel ABI, so that
increasing
if_flags to 32 bits was not an option.


-- 
Vladimir B. Grebenschikov
vova@sw.ru, SWsoft, Inc.

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