Pkg xen devel - Feb 2012 - Bug#639941: Xen "line 118: sigerr: command not found" error for unassigned network interfaces

I'm also seeing this error in a very similar setup

$ cat /etc/xen/scripts/network-dualbridge
#!/bin/sh
dir=$(dirname "$0")
$dir/network-bridge "$@" vifnum=0 netdev=eth0 bridge=xenbr0
$dir/network-bridge "$@" vifnum=1 netdev=eth1 bridge=xenbr1

but in my case, each interface that is setup with a bridge already has
an IP assigned to it via /etc/network/interfaces

but regardless of the error, the networking setup actually works. it's
just annoying to have to wait so long for the command to complete during
the boot process.

-- 
Gabriel Filion