[Bridge] How to bridge a eth0 and usb0 device

E5739C at motorola.com (Sun Zongjun-E5739C) · Tue, 24 Oct 2006 10:46:20 +0800

Hi

 I intent to use brctl to bridge two devices on linux box. One is eth0,
the other is USB net which is recognized as usb0 by linux box.

 Then I run following command 

# ifconfig eth0 down
# ifconfig usb0 down
# brctt addbr ipbr
# brctl addif ipbr eth0
# brctl addif ipbr usb0

# ifconfig eth0 up
# ifconfig eth0 0.0.0.0
# ifconfig usb0 up
# ifconfig usb0 0.0.0.0

# ifconfig ipv6 up

                          eth0            usb0
192.168.16.2
Box1<----------------> Linux bridge <----------------------> Box

Then I connet another device into the eth0 interface of bridge. Its ip
address is 192.168.16.1, the device on the othe end of usb lan is
192.168.16.2

When I ping 192.168.16.2 from 192.168.16.1. The tcpdump on bridge is
message of ARP "who has 192.168.16.2 tell 192.168.16.1", but I neve see
the ARP reply why?

Thanks
Best Regards