I have i7-6700K (4.7 GHz) Turbo Boost / 64 GB DDR4 / 2x240 SSD / 250 Mbps / Anti-DDoS-GAME server from ovh.ie with installed Centos 6. For virtualisation I am use vmmanager.
Host ip: 164.132.202.XXX
3 Running VPS on this host (CentOS-6-amd64, Windows-Server-2012-R2,Ubuntu-16.04-amd64) Vps ips subnet: 5.39.120.XXX/30 For each ip in subnet I generate MAC adress. So all vps can succesfully connect to internet. Anyone can connect to web server installed on VPS using ip http://5.39.120.XXX.
But no-one can connect to server via UDP port. I have installed on vps Team Speak 3, Rust (game), Counter-Strike: Global Offensive servers. I can sucessfully connect to each server, but other people can't! They have error what says that IP (from VPS) not reachable.
Team Speak 3 log
<11:46:43> Trying to connect to server on 37.59.147.XX
<11:46:48> Failed to connect to server
More interesting I have also install Team Speak 3 Server on HOST machine with IP: 164.132.202.XXX Anyone can sucessfully connect to this server! BTW after this step they are able to connect to server installed on VPS with IP: 37.59.147.XX!
What can be wrong?
Did you checked firewall on HOST and network configuration?
PS: VMManager? Why? If you need CentOS on HOST, you can install Citrix XenServer. OVH have package for install via dashboard. Only you need Citrix XenCenter in your PC/Laptop.