Binding server port to default IP
UDP initialized on port 28000
Initializing UPnP...
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List of UPNP devices found on the network :
desc: http://192.168.1.1:2555/upnp/9bcffeb3-1e93-3b4e-b418-8c8ef61de437/desc.xml
st: urn:schemas-upnp-org:device:InternetGatewayDevice:1
desc: http://192.168.1.1:2555/upnp/9bcffeb3-1e93-3b4e-b418-8c8ef61de437/desc.xml
st: urn:schemas-upnp-org:device:InternetGatewayDevice:1
desc: http://192.168.1.1:2555/upnp/9bcffeb3-1e93-3b4e-b418-8c8ef61de437/desc.xml
st: urn:schemas-upnp-org:device:InternetGatewayDevice:1
Found valid IGD : http://192.168.1.1:2555/upnp/a64e8f83-ef03-3055-b615-0a912371dcfe/WANIPConn1.ctl
Local LAN ip address : 192.168.1.2
ExternalIPAddress = 173.51.48.159
AddPortMapping(28000, 28000, 192.168.1.2) failed with code 718 (ConflictInMappingEntry)
Binding server port to default IP
UDP initialized on port 28100
There is a conflict. Make sure nothing else is using the port 28000, possibly another server.
Remember, dedicated and listen servers both use ports, and they must be different.