Standard NetDriver does not work, Unable to create, find and join lan sessions.

I can’t get the engine’s basic multiplayer system to work.

[OnlineSubsystem]
DefaultPlatformService=Null

[/Script/Engine.GameEngine]
!NetDriverDefinitions=ClearArray
+NetDriverDefinitions=(DefName="GameNetDriver",DriverClassName="OnlineSubsystemUtils.IpNetDriver",DriverClassNameFallback="/Script/OnlineSubsystemUtils.IpNetDriver")

Build.cs:

PublicDependencyModuleNames.AddRange(new string[] { "Core", "CoreUObject", "Engine", "Slate", "SlateCore", "InputCore", "OnlineSubsystemNull", "OnlineSubsystem", "OnlineSubsystemUtils"});