SocketOptionName 0x1b is not supported at IPv6 level Linux Server

[Lifsteinn]

I'm trying to start a Linux dedicated server, but there is this error when I try to start it:

 

Using config file: serverconfig.xml

eac_server.so [x64] :: OnLoad()

System.Net.Sockets.SocketOptionName 0x1b is not supported at IPv6 level

 

 

On the output log file I found:

 

2019-07-29T13:32:54 1.150 INF NET: Starting server protocols

Bind exception: System.Net.Sockets.SocketException: Protocol option not supported

at System.Net.Sockets.Socket.SetSocketOption (SocketOptionLevel optionLevel, SocketOptionName optionName, Boolean optionValue) [0x00000] in <filename unknown>:0

at LiteNetLib.NetSocket.BindSocket (System.Net.Sockets.Socket socket, System.Net.IPEndPoint ep, Boolean reuseAddress) [0x00000] in <filename unknown>:0 , errorCode: ProtocolOption

 

(Filename: ./Runtime/Export/Debug.bindings.h Line: 43)

 

Could anyone help me?