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Date:      Tue, 27 Aug 2002 18:25:22 +0800
From:      "Jui-Nan Eric Lin" <ericlin@ericlin.cabin.idv.tw>
To:        <freebsd-questions@freebsd.org>
Subject:   Question about bridge(4): loop without physical loop
Message-ID:  <000f01c24db4$0dd35180$fe00a8c0@synvision.com.tw>

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Hi, all:

I have installed bridge on my freebsd box, but the message showed on the
screen frequently and the network halted (packet missing):

/kernel: -- loop (0) 55.55.55.55.55.55 to fxp1 from fxp0 (active)
/kernel: -- loop (0) 55.55.55.55.55.55 to fxp0 from fxp1 (active)

It' weird because I didn't have a NIC which has mac address
55.55.55.55.55.55.
I have searched with Google, and found the message below:

http://docs.freebsd.org/cgi/getmsg.cgi?fetch=180949+0+archive/2002/freebsd-n
et/20020707.freebsd-net

It seems that bridge supports only NICs with "SIMPLEX" flag.
Therefore, I checked result of "ifconfig -a", but my two Intel 82550 (fxp0,
fxp1) has "SIMPLEX" flag:

fxp0: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
fxp1: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500

Any suggestion?

P.S. #1 sysctl -a | grep bridge

#sysctl -a | grep bridge
net.link.ether.bridge_cfg: fxp0,fxp1
net.link.ether.bridge: 1
net.link.ether.bridge_ipfw: 1
net.link.ether.bridge_ipf: 0
net.link.ether.bridge_ipfw_drop: 0
net.link.ether.bridge_ipfw_collisions: 749

P.S.#2 Sorry for my poor English :)

Sincerely,
                    Jui-Nan Eric Lin



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