BUG: brief description of the bug

[Ulysess-Z]

Sealos Version

v4.3.0

How to reproduce the bug?

您好，在使用sealos 4.3.0版本部署k8s环境时遇到了coredns必须要连接公网才能让组件访问速度正常的情况，否则在服务器断开公网链接后再访问k8s应用时就比较慢，链接到公网就又变快了【k8s版本v1.27.5和calico 3.26.1以及k8s版本v1.24和calico 3.24.1 这两个组合都复现了此种情况】，请见附件，麻烦帮忙看下，谢谢，期待回复

What is the expected behavior?

What do you see instead?

No response

Operating environment

- Sealos version:4.3.0
- Containerd version:v1.7.15
- Kubernetes version:1.27.5
- Operating system:ubuntu 20.04.6 LTS
- Runtime environment:Containerd 
- Cluster size: single
- Additional information:

Additional information

No response