[TUTORIAL] How to access host's panel via fixed domain/IP when host's IP changes due to network switch in pve bridge mode?

[pve_sword]

As the title says​

• The host machine joins network A and gets an internal IP of 192.168.30.150
• The host machine joins network B and gets an internal IP of 10.24.36.128

Current situation​

• The virtual machine needs to use bridge mode to conveniently allow external access to various ports of the virtual machine
• Unable to unify the internal IPs of networks A and B

At this time​

• When the host machine joins network A, access pve management panel using https://192.168.30.150:8006
• When the host machine joins network B, access pve management panel using https://10.24.36.128:8006

Trouble​

• The IP of the pve management panel opened each time is different

Unacceptable solution​

• Use frp or similar services to penetrate the internal network and access it through the external network

Problem extension​

• If you plan to open a virtual machine A, run openwrt+openclash in virtual machine A, and let other virtual machines use virtual machine A as a side router, there will be similar problems. The IP of this virtual machine A is not fixed. How to solve this problem?