ipam: custom vpc: sts ip pool not use the static ipv6 address in ip pool annos

[bobz965]

Expected Behavior

sts ip pool should use the static ipv6 address in ip pool annos

Actual Behavior

sts ip pool not use the static ipv6 address in ip pool annos

Steps to Reproduce the Problem

kube-ovn master 1.12.0

1. make kind-init-dual; make kind-install-dual to init a new cluster
2. create sts in custom vpc with ip pool, ths preset ipv6 ip not set

# the bad sts in custom vpc subnet


k get sts -n slr-5434    sts-53904 -o yaml
apiVersion: apps/v1
kind: StatefulSet
metadata:
  creationTimestamp: "2023-07-18T09:43:51Z"
  generation: 1
  name: sts-53904
  namespace: slr-5434
  resourceVersion: "1224"
  uid: 2b6177ae-74a1-4a2e-b89c-c46ae0173dd6
spec:
  persistentVolumeClaimRetentionPolicy:
    whenDeleted: Retain
    whenScaled: Retain
  podManagementPolicy: OrderedReady
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      app: slr
  serviceName: sts-53904
  template:
    metadata:
      annotations:
        ovn.kubernetes.io/ip_pool: 10.245.233.82,fc00:10:ff:0:5:6bad:b8ae:cd4f
        ovn.kubernetes.io/logical_switch: subnet-53904
      creationTimestamp: null
      labels:
        app: slr
    spec:
      containers:
      - command:
        - sh
        - -c
        - cd /tmp && python3 -m http.server 80
        env:
        - name: IPV4_ADDR
          value: 10.245.233.82
        image: kubeovn/kube-ovn-base:v1.12.0
        imagePullPolicy: IfNotPresent
        name: webserver
        resources: {}
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
      - command:
        - sh
        - -c
        - 'cd /tmp && python3 -m http.server --bind :: 800'
        env:
        - name: IPV6_ADDR
          value: fc00:10:ff:0:5:6bad:b8ae:cd4f
        image: kubeovn/kube-ovn-base:v1.12.0
        imagePullPolicy: IfNotPresent
        name: webv6
        resources: {}
        terminationMessagePath: /dev/termination-log
        terminationMessagePolicy: File
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      schedulerName: default-scheduler
      securityContext: {}
      terminationGracePeriodSeconds: 30
  updateStrategy:
    type: RollingUpdate
status:
  availableReplicas: 1
  collisionCount: 0
  currentReplicas: 1
  currentRevision: sts-53904-564fd9bc5b
  observedGeneration: 1
  readyReplicas: 1
  replicas: 1
  updateRevision: sts-53904-564fd9bc5b
  updatedReplicas: 1

no err log

I test this vpc

Additional Info

• Kubernetes version:

  Output of kubectl version:

  (paste your output here)
  

• kube-ovn version:

  (paste your output here)
  

• operation-system/kernel version:

  Output of awk -F '=' '/PRETTY_NAME/ { print $2 }' /etc/os-release:
  Output of uname -r:

  (paste your output here)