New-Item -Force -ItemType file ${l2bridge_conf} | Out-Null
  Set-Content ${l2bridge_conf} `
'{
  "cniVersion":  "0.2.0",
  "name":  "l2bridge",
  "type":  "sdnbridge",
  "master": "Ethernet",
  "capabilities":  {
    "portMappings":  true,
    "dns": true
  },
  "ipam":  {
    "subnet": "POD_CIDR",
    "routes": [
      {