Failed to access the cluster IP of other applications in the cluster within the Pod

[ty-dc]

What happend:
Failed to access the cluster IP of other applications in the cluster within the Pod

What you expected to happen:
Access to the cluster IP of other applications in the cluster from within the Pod

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

1. create multus network-attachment-definition CRD: macvlan-conf

cat <<EOF | kubectl apply -f -
apiVersion: k8s.cni.cncf.io/v1
kind: NetworkAttachmentDefinition
metadata:
  name: macvlan-conf
  namespace: kube-system
spec:
  config: |-
    {
        "cniVersion": "0.3.1",
        "name": "macvlan-conf",
        "plugins": [
            {
                "type": "macvlan",
                "master": "eth0",
                "mode": "bridge",
                "ipam": {
                    "type": "spiderpool"
                }
            },{
                  "type": "veth",
                  "service_cidr": ["10.96.0.0/16"]
              }
        ]
    }
EOF

2. Creating Pods and using annotations："v1.multus-cni.io/default-network"

cat <<EOF | kubectl create -f -
apiVersion: apps/v1
kind: Deployment
metadata:
  name: custom-ippool-deploy
spec:
  replicas: 2
  selector:
    matchLabels:
      app: custom-ippool-deploy
  template:
    metadata:
      annotations:
        ipam.spidernet.io/ippool: |-
          {
            "ipv4": ["default-v4-ippool"]
          }
        v1.multus-cni.io/default-network: kube-system/macvlan-conf
      labels:
        app: custom-ippool-deploy
    spec:
      containers:
      - name: custom-ippool-deploy
        image: ghcr.io/daocloud/dao-2048:v1.2.0
        imagePullPolicy: IfNotPresent
        ports:
        - name: http
          containerPort: 80
          protocol: TCP
EOF

3. Create a service

cat <<EOF | kubectl create -f -
apiVersion: v1
kind: Service
metadata:
  name: custom-ippool-svc
  labels:
    app: custom-ippool-deploy
spec:
  type: ClusterIP
  ports:
    - port: 80
      protocol: TCP
      targetPort: 80
  selector:
    app: custom-ippool-deploy
EOF

4. access service IP

> kubectl exec -ti  custom-ippool-deploy-66d4669dd5-j97rc -- sh

/ # curl 10.96.100.43:80 -I
Connection refused

Anything else we need to know?:

[github-actions]

Hi @ty-dc, Thanks for opening an issue! Please use '/kind '(for example: /kind bug) to label this issue.

[ty-dc]

/kind bug

[cyclinder]

Thanks for the report @ty-dc .

This is fixed by #5

/close