Ipv6 connection refused with dualstack service

General Discussions
1

Cluster information:

Kubernetes version:
Client Version: version.Info{Major:“1”, Minor:“21”, GitVersion:“v1.21.5”, GitCommit:“aea7bbadd2fc0cd689de94a54e5b7b758869d691”, GitTreeState:“clean”, BuildDate:“2021-09-15T21:10:45Z”, GoVersion:“go1.16.8”, Compiler:“gc”, Platform:“linux/amd64”}
Server Version: version.Info{Major:“1”, Minor:“21”, GitVersion:“v1.21.5”, GitCommit:“aea7bbadd2fc0cd689de94a54e5b7b758869d691”, GitTreeState:“clean”, BuildDate:“2021-09-15T21:04:16Z”, GoVersion:“go1.16.8”, Compiler:“gc”, Platform:“linux/amd64”}

Cloud being used: bare-metal
Installation method: kubespray
Host OS: ubuntu 20.04
CNI and version: calico
Client Version: v3.19.2
Git commit: 6f3d4900
Cluster Version: v3.19.2
Cluster Type: k8s,kdd,kubespray,bgp,kubeadm

CRI and version: Docker
Client: Docker Engine - Community
Version: 20.10.11
API version: 1.41
Go version: go1.16.9
Git commit: dea9396
Built: Thu Nov 18 00:37:08 2021
OS/Arch: linux/amd64
Context: default
Experimental: true

      Server: Docker Engine - Community
       Engine:
        Version:          20.10.11
        API version:      1.41 (minimum version 1.12)
        Go version:       go1.16.9
        Git commit:       847da18
        Built:            Thu Nov 18 00:35:16 2021
        OS/Arch:          linux/amd64
        Experimental:     false
       containerd:
        Version:          1.4.12
        GitCommit:        7b11cfaabd73bb80907dd23182b9347b4245eb5d
       runc:
        Version:          1.0.2
        GitCommit:        v1.0.2-0-g52b36a2
       docker-init:
        Version:          0.19.0
        GitCommit:        de40ad0

Service.yaml

    apiVersion: v1
    kind: Service
    metadata:
      name: api
      namespace: odim
    spec:
      ipFamilies:
      - IPv4
      - IPv6
      ipFamilyPolicy: PreferDualStack
      ports:
      - nodePort: 30080
        port: 45000
      selector:
        app: api
      type: NodePort

Query:

Deploying the above service file and deployment which runs a HTTPS server that accepts both IPv4 and IPv6 input, I see that the NodePort is open with the netstat command.
sudo netstat -tunlp | grep 30080
tcp 0 0 0.0.0.0:30080 0.0.0.0:* LISTEN 171802/kube-proxy
tcp6 0 0 :::30080 :::* LISTEN 171802/kube-proxy

When I try to run a curl request on with IPv6 host IP I get a connection refused error. But curl request via IPv4 goes through.
Any suggestion on why the connection is refused with IPv6?

Thanks,
Shiva