Receiving "Error -4089 EAFNOSUPPORT address family not supported" in .Net Core 1.1 Web App on Azure - asp.net-core

Question

I published a Web Api implemented in .Net Core 1.1 to Azure as an App Service but I keep receiving the error message below even when browsing a static html file:
2016-11-29 16:43:05.594 +00:00 [Warning] Unable to bind to http://localhost:28243 on the IPv6 loopback interface.
System.AggregateException: One or more errors occurred. (Error -4089 EAFNOSUPPORT address family not supported) ---> Microsoft.AspNetCore.Server.Kestrel.Internal.Networking.UvException: Error -4089 EAFNOSUPPORT address family not supported
at Microsoft.AspNetCore.Server.Kestrel.Internal.Networking.Libuv.tcp_bind(UvTcpHandle handle, SockAddr& addr, Int32 flags)
at Microsoft.AspNetCore.Server.Kestrel.Internal.Networking.UvTcpHandle.Bind(ServerAddress address)
at Microsoft.AspNetCore.Server.Kestrel.Internal.Http.TcpListener.CreateListenSocket()
at Microsoft.AspNetCore.Server.Kestrel.Internal.Http.Listener.<StartAsync>b__8_0(Object state)
--- End of inner exception stack trace ---
at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions)
at System.Threading.Tasks.Task.Wait(Int32 millisecondsTimeout, CancellationToken cancellationToken)
at System.Threading.Tasks.Task.Wait()
at Microsoft.AspNetCore.Server.Kestrel.Internal.KestrelEngine.CreateServer(ServerAddress address)
at Microsoft.AspNetCore.Server.Kestrel.KestrelServer.Start[TContext](IHttpApplication`1 application)
---> (Inner Exception #0) Microsoft.AspNetCore.Server.Kestrel.Internal.Networking.UvException: Error -4089 EAFNOSUPPORT address family not supported
at Microsoft.AspNetCore.Server.Kestrel.Internal.Networking.Libuv.tcp_bind(UvTcpHandle handle, SockAddr& addr, Int32 flags)
at Microsoft.AspNetCore.Server.Kestrel.Internal.Networking.UvTcpHandle.Bind(ServerAddress address)
at Microsoft.AspNetCore.Server.Kestrel.Internal.Http.TcpListener.CreateListenSocket()
at Microsoft.AspNetCore.Server.Kestrel.Internal.Http.Listener.<StartAsync>b__8_0(Object state)<---
I googled it a bit and realized that there are a couple threads in git but none of them shed a light in resolving this issue. for e.g. one of them suggested to upload hosting.json file but that wasn't conclusive either. Any ideas how to resolve this issue?

Answer 1

Check for global.json file in solution root - do you have sdk version "for 1.1"? Something like
{
"projects": [ "src", "test" ],
"sdk": {
"version": "1.0.0-preview2-1-003177"
}
}