redundant ethernet interfaces

[Marko Lerota]

I have two nic bge0 and bge0, and I would like them 
to have the same IP address in case that my redundant 
switch stop responding. Bridge is not an option, 
I tried with netgraph but I did not succeed. 
Does anyone have some solution?

I followed the examples from google groups and I stuck with
duplicated packets when both ethernets are plugged and 
50% packet loss when one ethernet is unplugged, damn !!#@!#@!$%^@$#@

here is my config 

rc.conf 
ifconfig_bge0="1.2.3.4 netmask 255.255.0.0 media 100baseTX mediaopt
full-duplex"
ifconfig_bge1="media 100baseTX mediaopt full-duplex"

and  /usr/local/etc/rc.d/bonding.sh

 #!/bin/sh
ifconfig bge1 up
kldload /boot/kernel/ng_ether.ko
kldload /boot/kernel/ng_one2many.ko
ngctl mkpeer bge0: one2many upper one
ngctl connect bge0: bge0:upper lower many0
ngctl connect bge1: bge0:upper lower many1
ngctl msg bge1: setpromisc 1
ngctl msg bge1: setautosrc 0
ngctl msg bge0:upper setconfig "{xmitAlg=1 failAlg=1 enabledLinks =[ 1
1 ] }" 

manual for this sucks 

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