plugin type="calico" failed (add): invalid character 'd' looking for beginning of value

[13567436138]

What happend:

 Warning  FailedCreatePodSandBox  4s    kubelet            Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "cc39aedf1e6180082fafb684f1fac6813f3c208e92c2e1633a5e398c0685182c": plugin type="multus" name="multus-cni-network" failed (add): [default/samplepod/8aaace7d-f22c-429d-8191-1d160e92c130:k8s-pod-network]: error adding container to network "k8s-pod-network": plugin type="calico" failed (add): invalid character 'd' looking for beginning of value

apiVersion: projectcalico.org/v3
kind: IPPool
metadata:
  name: my-ip-pool
  namespace: kube-system
spec:
  cidr: 192.168.0.0/16         # 你的 IP 范围
  ipipMode: Always             # IPIP 模式
  natOutgoing: true            # 启用 NAT
  blockSize: 26                # 块大小

cat <<EOF | kubectl create -f -
apiVersion: "k8s.cni.cncf.io/v1"
kind: NetworkAttachmentDefinition
metadata:
  name: flannel-conf
spec: 
  config: '{
    "cniVersion": "0.3.1",
    "type": "flannel",
    "delegate": {
      "isDefaultGateway": true
    }
  }'
EOF

cat <<EOF | kubectl create -f -
apiVersion: v1
kind: Pod
metadata:
  name: samplepod
  annotations:
    k8s.v1.cni.cncf.io/networks: default/flannel-conf
spec:
  containers:
    - name: nginx-container
      image: nginx:latest
      ports:
        - containerPort: 80
      volumeMounts:
        - name: nginx-storage
          mountPath: /usr/share/nginx/html
  volumes:
    - name: nginx-storage
      emptyDir: {}
EOF

cat <<EOF | kubectl create -f -
apiVersion: v1
kind: Pod
metadata:
  name: samplepod
  annotations:
    cni.projectcalico.org/ipv4pools: "default-ipv4-ippool"
    k8s.v1.cni.cncf.io/networks: default/flannel-conf
spec:
  containers:
    - name: nginx-container
      image: nginx:latest
      ports:
        - containerPort: 80
      volumeMounts:
        - name: nginx-storage
          mountPath: /usr/share/nginx/html
  volumes:
    - name: nginx-storage
      emptyDir: {}
EOF

with cni.projectcalico.org/ipv4pools: "default-ipv4-ippool" got error ,without no error?

What you expected to happen:

How to reproduce it (as minimally and precisely as possible):

Anything else we need to know?:

Environment:

• Multus version latest
  image path and image ID (from 'docker images')
• Kubernetes version (use kubectl version):1.31.0
• Primary CNI for Kubernetes cluster:calico
• OS (e.g. from /etc/os-release):ubuntu2404
• File of '/etc/cni/net.d/'
• File of '/etc/cni/multus/net.d'
• NetworkAttachment info (use kubectl get net-attach-def -o yaml)
• Target pod yaml info (with annotation, use kubectl get pod <podname> -o yaml)
• Other log outputs (if you use multus logging)