Reproduces error on a particular issue I was working on -- replicating a CI test case that was failing because Linux bridge 'linux-br0' was not found.

verification-error-reproducer.sh

read -r -d '' LINUX_BRIDGE <<EOF
interfaces:
  - name: eth1
    type: veth
    state: up
  - name: linux-br0
    type: linux-bridge
    state: up
    bridge:
      port:
        - name: eth1
EOF

read -r -d '' LINUX_BRIDGE_ABSENT <<EOF
interfaces:
  - name: eth1
    type: veth
    state: absent
  - name: linux-br0
    type: linux-bridge
    state: absent
EOF

create_eth1() {
  sudo ip link add eth1 type veth peer eth1_p
}

delete_eth1() {
  sudo ip link delete eth1
}

delete_bridge() {
  sudo ip link delete linux-br0
}

main() {
  sudo systemctl stop NetworkManager

  delete_bridge
  delete_eth1
  create_eth1

  if ! (echo "$LINUX_BRIDGE" | sudo ./rust/target/debug/nmstatectl apply -k -); then
    echo "apply failed"
  fi

  echo "sleeping 3 ..."
  sleep 3

  echo "$LINUX_BRIDGE_ABSENT" | sudo ./rust/target/debug/nmstatectl apply -k -
}

main