Network between LXC or/and VM

[demon_mono]

Hy ,

I have a HEtzner proxmox server , which works well .
I have unfoirtunetly a netwrok issue.
My VM can not connect to an service, managed by a LXC.
They are on the same network .
My LXC has rustdeck service . This works from outside ( I can use this service from any external devices ).

But from a VM into proxmox, I can not . It is like I can't reach the LXC .

Any idea ?

 

[demon_mono]

no news ? :'(

In order to be clear , in a LXC our VM , If want to contact myself , through web ( by public ip / dns name ) , it does not work .
But I try with internal IP that works

For exacmple ( the port 25 is only for example, that failed on all ports )

LXC -> telnet "public_ip" 25 -> failed

LXC -> telnet "LXC IP" -> OK
outside -> telnet "public_ip" 25 -> OK

any idea ? a network blocking point ?