root@kubernetes:~# kubectl get nodes -o json | jq '.items[].metadata.annotations'
{
  "flannel.alpha.coreos.com/backend-data": "null",
  "flannel.alpha.coreos.com/backend-type": "host-gw",
  "flannel.alpha.coreos.com/kube-subnet-manager": "true",
  "flannel.alpha.coreos.com/public-ip": "192.168.1.20",
  "node.alpha.kubernetes.io/ttl": "0",
  "volumes.kubernetes.io/controller-managed-attach-detach": "true"
}
{
  "flannel.alpha.coreos.com/backend-data": "null",
  "flannel.alpha.coreos.com/backend-type": "host-gw",
  "flannel.alpha.coreos.com/kube-subnet-manager": "true",
  "flannel.alpha.coreos.com/public-ip": "10.0.0.2",
  "node.alpha.kubernetes.io/ttl": "0",
  "volumes.kubernetes.io/controller-managed-attach-detach": "true"
}
{
  "flannel.alpha.coreos.com/backend-data": "null",
  "flannel.alpha.coreos.com/backend-type": "host-gw",
  "flannel.alpha.coreos.com/kube-subnet-manager": "true",
  "flannel.alpha.coreos.com/public-ip": "10.0.0.3",
  "node.alpha.kubernetes.io/ttl": "0",
  "volumes.kubernetes.io/controller-managed-attach-detach": "true"
}
{
  "flannel.alpha.coreos.com/backend-data": "null",
  "flannel.alpha.coreos.com/backend-type": "host-gw",
  "flannel.alpha.coreos.com/kube-subnet-manager": "true",
  "flannel.alpha.coreos.com/public-ip": "10.0.0.4",
  "node.alpha.kubernetes.io/ttl": "0",
  "volumes.kubernetes.io/controller-managed-attach-detach": "true"
}
root@kubernetes:~#