Cannot connect to a private controller

[maxin-cn]

The 691c06852f is my private controller, but I cannot connect to any network created on the private controller. The REQUESTING_CONFIGURATION is displayed.

I used the command nc-zvu xxx.xxx.xxx.xxx 9993 on the local machine to check whether the UDP protocol is available on its port. The result shows:

Connection to xxx.xxx.xxx.xxx 9993 port [udp/*] succeeded!

The udp protocol is available.

BTW, the private controller can access all the planet and moon nodes.

So how do I solve this problem? Thank you very much. I also added the moon server on both the local machine and the controller machine.