/etc/init/lxc-net.conf is in lxc 0.7.5-3ubuntu52.
This file is owned by root:root, with mode 0o644.
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 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | description "lxc network"
author "Serge Hallyn <serge.hallyn@canonical.com>"
start on starting lxc
stop on stopped lxc
env USE_LXC_BRIDGE="false"
env LXC_BRIDGE="lxcbr0"
env LXC_ADDR="10.0.3.1"
env LXC_NETMASK="255.255.255.0"
env LXC_NETWORK="10.0.3.0/24"
env LXC_DHCP_RANGE="10.0.3.2,10.0.3.254"
env LXC_DHCP_MAX="253"
env varrun="/var/run/lxc"
pre-start script
[ -f /etc/default/lxc ] && . /etc/default/lxc
[ "x$USE_LXC_BRIDGE" = "xtrue" ] || { stop; exit 0; }
cleanup() {
# dnsmasq failed to start, clean up the bridge
iptables -t nat -D POSTROUTING -s ${LXC_NETWORK} -j MASQUERADE || true
ifconfig ${LXC_BRIDGE} down || true
brctl delbr ${LXC_BRIDGE} || true
}
if [ -d /sys/class/net/${LXC_BRIDGE} ]; then
if [ ! -f ${varrun}/network_up ]; then
# bridge exists, but we didn't start it
stop;
fi
exit 0;
fi
# set up the lxc network
echo 1 > /proc/sys/net/ipv4/ip_forward
mkdir -p ${varrun}
brctl addbr ${LXC_BRIDGE}
ifconfig ${LXC_BRIDGE} ${LXC_ADDR} netmask ${LXC_NETMASK} up
iptables -A POSTROUTING -s ${LXC_NETWORK} -t nat -j MASQUERADE
dnsmasq -u lxc-dnsmasq --strict-order --bind-interfaces --pid-file=${varrun}/dnsmasq.pid --conf-file= --listen-address ${LXC_ADDR} --dhcp-range ${LXC_DHCP_RANGE} --dhcp-lease-max=${LXC_DHCP_MAX} --dhcp-no-override --except-interface=lo --interface=${LXC_BRIDGE} || cleanup()
touch ${varrun}/network_up
end script
post-stop script
[ -f /etc/default/lxc ] && . /etc/default/lxc
[ "x$USE_LXC_BRIDGE" = "xtrue" ] || exit 0;
# if $LXC_BRIDGE has attached interfaces, don't shut it down
ls /sys/class/net/${LXC_BRIDGE}/brif/* > /dev/null 2>&1 && exit 0;
if [ -d /sys/class/net/${LXC_BRIDGE} ]; then
ifconfig ${LXC_BRIDGE} down
iptables -t nat -D POSTROUTING -s ${LXC_NETWORK} -j MASQUERADE || true
pid=`cat ${varrun}/dnsmasq.pid 2>/dev/null` && kill -9 $pid || true
rm -f ${varrun}/dnsmasq.pid
brctl delbr ${LXC_BRIDGE}
fi
rm -f ${varrun}/network_up
end script
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