/etc/xen/scripts/network-route is in xen-utils-common 4.4.0-0ubuntu5.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 | #!/bin/bash
#============================================================================
# Default Xen network start/stop script.
# Xend calls a network script when it starts.
# The script name to use is defined in ${XEN_CONFIG_DIR}/xend-config.sxp
# in the network-script field.
#
# Usage:
#
# network-route (start|stop|status) {VAR=VAL}*
#
# Vars:
#
# netdev The gateway interface (default eth0).
# antispoof Whether to use iptables to prevent spoofing (default yes).
#
#============================================================================
dir=$(dirname "$0")
. "$dir/hotplugpath.sh"
. "$dir/xen-script-common.sh"
evalVariables "$@"
netdev=${netdev:-eth0}
echo 1 >/proc/sys/net/ipv4/ip_forward
echo 1 >/proc/sys/net/ipv4/conf/${netdev}/proxy_arp
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