Works fine running on Mono 4.6.2 on Ubuntu linux
Works fine running on .NET Framework on Windows

Can connect to local server when running on Mono on Windows

When connecting to a remote server when running Mono on Windows:

Unhandled Exception:
System.TimeoutException: A timeout occured after 30000ms selecting a server using CompositeServerSelector{ Selectors = WritableServerSelector, LatencyLimitingServerSelector

{ AllowedLatencyRange = 00:00:00.0150000 }

}. Client view of cluster state is { ClusterId : "1", ConnectionMode : "Automatic", Type : "Unknown", State : "Disconnected", Servers : [{ ServerId: "

{ ClusterId : 1, EndPoint : "Unspecified/ds058508.mlab.com:58508" }

", EndPoint: "Unspecified/ds058508.mlab.com:5850
8", State: "Disconnected", Type: "Unknown" }] }.
at MongoDB.Driver.Core.Clusters.Cluster.ThrowTimeoutException (MongoDB.Driver.Core.Clusters.ServerSelectors.IServerSelector selector, MongoDB.Driver.Core.Clusters.ClusterDescription description) [0x00013] in <0763d4a07cbf42da8f075cc7041f4302>:0
at MongoDB.Driver.Core.Clusters.Cluster+WaitForDescriptionChangedHelper.HandleCompletedTask (System.Threading.Tasks.Task completedTask) [0x00009] in <0763d4a07cbf42da8f075cc7041f4302>:0
at MongoDB.Driver.Core.Clusters.Cluster.WaitForDescriptionChanged (MongoDB.Driver.Core.Clusters.ServerSelectors.IServerSelector selector, MongoDB.Driver.Core.Clusters.ClusterDescription description, System.Threading.Tasks.Task descriptionChangedTask, System.TimeSpan timeout, System.Threading.CancellationToken cancellationToken) [0x00021] in <0763d4a07cbf42da8f075cc7041f4302>:0
at MongoDB.Driver.Core.Clusters.Cluster.SelectServer (MongoDB.Driver.Core.Clusters.ServerSelectors.IServerSelector selector, System.Threading.CancellationToken cancellationToken) [0x00047] in <0763d4a07cbf42da8f075cc7041f4302>:0
[ERROR] FATAL UNHANDLED EXCEPTION: System.TimeoutException: A timeout occured after 30000ms selecting a server using CompositeServerSelector{ Selectors = WritableServerSelector, LatencyLimitingServerSelector

{ AllowedLatencyRange = 00:00:00.0150000 }

}. Client view of cluster state is { ClusterId : "1", ConnectionMode : "Automatic", Type : "Unknown", State : "Disconnected", Servers : [{ ServerId: "

{ ClusterId : 1, EndPoint : "Unspecified/ds058508.mlab.com:58508" }

", EndPoint:
"Unspecified/ds058508.mlab.com:58508", State: "Disconnected", Type: "Unknown" }] }.
at MongoDB.Driver.Core.Clusters.Cluster.ThrowTimeoutException (MongoDB.Driver.Core.Clusters.ServerSelectors.IServerSelector selector, MongoDB.Driver.Core.Clusters.ClusterDescription description) [0x00013] in <0763d4a07cbf42da8f075cc7041f4302>:0
at MongoDB.Driver.Core.Clusters.Cluster+WaitForDescriptionChangedHelper.HandleCompletedTask (System.Threading.Tasks.Task completedTask) [0x00009] in <0763d4a07cbf42da8f075cc7041f4302>:0
at MongoDB.Driver.Core.Clusters.Cluster.WaitForDescriptionChanged (MongoDB.Driver.Core.Clusters.ServerSelectors.IServerSelector selector, MongoDB.Driver.Core.Clusters.ClusterDescription description, System.Threading.Tasks.Task descriptionChangedTask, System.TimeSpan timeout, System.Threading.CancellationToken cancellationToken) [0x00021] in <0763d4a07cbf42da8f075cc7041f4302>:0
at MongoDB.Driver.Core.Clusters.Cluster.SelectServer (MongoDB.Driver.Core.Clusters.ServerSelectors.IServerSelector selector, System.Threading.CancellationToken cancellationToken) [0x00047] in <0763d4a07cbf42da8f075cc7041f4302>:0

Example code:

using System;
using MongoDB.Bson.Serialization;
using MongoDB.Bson.Serialization.IdGenerators;
using MongoDB.Driver;
using Newtonsoft.Json;

namespace ConsoleApplication1
{
internal class Program
{
public static void Main(string[] args)
{
var mongourl = "<CONNECTION STRING>";
var dbName = "<DATABASE NAME>";

BsonSerializer.RegisterIdGenerator(
typeof(string),
StringObjectIdGenerator.Instance
);

var clientSettings =
MongoClientSettings.FromUrl(new MongoUrl(mongourl));

var mongoClient = new MongoClient(clientSettings);
var db = mongoClient.GetDatabase(dbName);

var collection = db.GetCollection<TestClass>("test");
var test = new TestClass

{Name = "Test"}

;
collection.InsertOne(test);

var result = collection.Find(Builders<TestClass>.Filter.Empty).ToList();

Console.WriteLine(JsonConvert.SerializeObject(result));
Console.WriteLine("Press any key to continue...");
Console.ReadKey();
}
}

public class TestClass
{
public string Id

{ get; set; }
public string Name { get; set; }

}

}