Getting bonded networking connections working in xen

create mybond in the /etc/xen/scripts dir

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#!/bin/sh
dir=$(dirname "$0")
"$dir/network-bridge" "$@" vifnum=0 netdev=bond0
"$dir/network-bridge" "$@" vifnum=1 netdev=bond1
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edit /etc/xen/xend-config.sxp

comment out:
#(network-script network-bridge)

and add:
(network-script mybond)

restart xen