Problem with ip, why is the game server running but not showing up on the network?

Question

linux

I start the game server, it is not on the network, I connect to the server via ssh, I agree - prntscr.com/9r9hlx - the server is visible, help me solve the problem.
There is OVH hosting, two ips, one of which has a KVM virtual machine running under ip 51.255.235.103
network interfaces

auto lo
iface lo inet loopback

# device: eth0
auto eth0
iface eth0 inet manual

auto vmbr0
iface vmbr0 inet static
address 151.80.230.126
netmask 255.255.255.0
gateway 151.80.230.254
bridge_ports eth0
bridge_stp off
bridge_fd 0

Answer 1

• it is not clear where you run the IP, on a virtual machine?
  
• Virtualka visible from the Internet? Perhaps your network is not configured there. You connect to one server, and write ip of another.
  
• in the config of the game server, the ip on which to run should be specified: 51.255.235.103, maybe it starts on 127.0.0.1
  
• And as Pavel Tananykhin correctly said, check the availability of the port on which the game server is running by its ip
  
• Draw the diagram more precisely
  

Answer 2

the server hangs on some port? Is the port accessible from the outside?