@EderRock
Tive um problema similar e todos aqui sabem que o problema pode variar de hardware para hardware. Vou de dar um exemplo: Na minha hospedagem as máquinas tem duas placas de rede, uma para a VPN e outra publica, para fazer os servidores se comunicarem, eu tive que configurar assim:
Login_athena
// Login Server Port
login_port: 6101
char_athena
// Login Server IP
// The character server connects to the login server using this IP address.
// NOTE: This is useful when you are running behind a firewall or are on
// a machine with multiple interfaces.
login_ip: 186.202.10.75
// Login Server Port
login_port: 6101
// Character Server IP
// The IP address which clients will use to connect.
// Set this to what your server's public IP address is.
char_ip: 186.202.10.75
// Character Server Port
char_port: 6102
map_athena
// Character Server IP
// The map server connects to the character server using this IP address.
// NOTE: This is useful when you are running behind a firewall or are on
// a machine with multiple interfaces.
char_ip: 186.202.10.75
// Character Server Port
char_port: 6102
// Map Server IP
// The IP address which clients will use to connect.
// Set this to what your server's public IP address is.
map_ip: 186.202.10.75
// Map Server Port
map_port: 6103
Tenta seguir esse modelo para ver se dar certo.