How to set up a network on a windows 7 virtual machine?

Question

Computer networks

******Available******
On a dedicated server in the OVH DC , by means of proxmox, a virtual KVM Windows 7 is installed , on which the game server is running.
VDS assigned ip 151.80.230.126
Game server ip 51.255.235.103
Game port open, static ip : prntscr.com/9rjx9p

*****Settings interfaces*******

auto lo
iface lo inet loopback
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

******TSP/IPv4***********
address 51.255.235.103
netmask 255.255.255.0
gateway 151.80.230.254
dns 8.8.8.8
prntscr.com/9rjcxl
******Problem**** *****
The problem is that the game server is not visible on the network, BUT IF ANY USER tries to connect to the server using the server's default ip 151.80.230.126 via SSH , and agrees with the RSA2 KEY information prntscr.com/9rjylv , then it will automatically starts to see the game server in the lists of available servers.
Tell me how to solve this problem?
How to correctly formulate the problem, to search for answers in the network?

Answer 1

Solved the problem, changed the mask on the virtual machine from 255.255.255. 0 to 255.255.255. 255 - servers are visible on the network.