gistfile1.txt

root@osa-controller-3:~# /usr/local/bin/lxc-veth-wiring infra3_heat_engine_container-37127731 7127731_eth2.41 eth2.41 br-mgmt

# Execution example: lxc-veth-wiring.sh testing VETHTEST eth1 br-mgmt

# CLI variables
CONTAINER_NAME="${1}"
VETH="${2}"
INTERFACE="${3}"
BRIDGE="${4}"
VETH_PEER="$(openssl rand -hex 4)"
openssl rand -hex 4

# PID of running container
PID="$(lxc-info -pHn ${CONTAINER_NAME})"
lxc-info -pHn ${CONTAINER_NAME}

# Exit 0 means no change, exit 3 is changed, any other exit is fail.
EXIT_CODE=0

if ! ip a l "${VETH}";then
  ip link add name "${VETH}" type veth peer name "${VETH_PEER}"
  ip link set dev "${VETH}" up
  EXIT=3
else
  ip link set dev "${VETH}" up
fi
103: 7127731_eth2.41@if102: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master br-mgmt state UP group default qlen 1000
    link/ether 72:e3:38:87:69:6e brd ff:ff:ff:ff:ff:ff link-netnsid 19
    inet6 fe80::70e3:38ff:fe87:696e/64 scope link
       valid_lft forever preferred_lft forever

if ip a l "${VETH_PEER}";then
  ip link set dev "${VETH_PEER}" up
  ip link set dev "${VETH_PEER}" netns "${PID}" name "${INTERFACE}"
  EXIT=3
fi
Device "054677ac" does not exist.

if ! brctl show "${BRIDGE}" | grep -q "${VETH}"; then
  brctl addif "${BRIDGE}" "${VETH}"
  EXIT=3
fi

lxc-attach --name "${CONTAINER_NAME}" <<EOC
  ip link set dev "${INTERFACE}" up
  ifdown "${INTERFACE}"
  ifup "${INTERFACE}"
EOC
ifdown: interface eth2.41 not configured
RTNETLINK answers: File exists
Failed to bring up eth2.41.