Unhandled exception if graylog goes down

[trampster]

If the graylog server goes down then

Unhandled exception. System.Net.Internals.SocketExceptionFactory+ExtendedSocketException (00000005, 0xFFFDFFFF): Name or service not known at System.Net.Dns.GetHostEntryOrAddressesCore(String hostName, Boolean justAddresses, AddressFamily addressFamily, ValueStopwatch stopwatch) at System.Net.Dns.<>c.<GetHostEntryOrAddressesCoreAsync>b__33_0(Object s, ValueStopwatch stopwatch) at System.Net.Dns.<>c__DisplayClass39_01.<RunAsync>b__0(Task <p0>, Object <p1>) at System.Threading.Tasks.ContinuationResultTaskFromTask1.InnerInvoke() at System.Threading.Tasks.Task.<>c.<.cctor>b__272_0(Object obj) at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state) --- End of stack trace from previous location --- at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.Tasks.Task.ExecuteWithThreadLocal(Task& currentTaskSlot, Thread threadPoolThread) --- End of stack trace from previous location --- at Serilog.Sinks.Graylog.Core.SinkComponentsBuilder.GetIpAddress(String hostnameOrAddress) at Serilog.Sinks.Graylog.Core.SinkComponentsBuilder.MakeTransport() at Serilog.Sinks.Graylog.GraylogSink.<>c__DisplayClass3_0.<.ctor>b__0() at System.Lazy1.ViaFactory(LazyThreadSafetyMode mode) --- End of stack trace from previous location --- at System.Lazy1.CreateValue() at Serilog.Sinks.Graylog.GraylogSink.Dispose() at Serilog.Core.Sinks.RestrictedSink.Dispose() at Serilog.LoggerConfiguration.<>c__DisplayClass32_0.<CreateLogger>g__Dispose|0() at Serilog.Core.Logger.Dispose() at Program.<Main>$(String[] args) in /home/daniel/Work/DataApiTools/dataapi-soak/Program.cs:line 71 at Program.<Main>(String[] args)