[android][arm64] System.Net.Sockets.Tests.SendTo_SyncForceNonBlocking.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint fails with NetworkUnreachable

[kotlarmilos]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1167858&view=logs&j=11fc76eb-f2d5-5967-e9b4-f54329587f75&t=071fe9c1-8e24-5546-3854-e555c5768672
Build error leg or test failing: Datagram_UDP_ShouldImplicitlyBindLocalEndpoint

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "Network is unreachable",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

The test fails only on Android arm/arm64, on Android x64 and other platforms it passes.

The detailed failure:

1)   [FAIL] System.Net.Sockets.Tests.SendTo_SyncForceNonBlocking.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint   Test name: System.Net.Sockets.Tests.SendTo_SyncForceNonBlocking.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint
Exception messages: System.Net.Sockets.SocketException : Network is unreachable   Exception stack traces:    at System.Net.Sockets.Socket.UpdateStatusAfterSocketErrorAndThrowException(SocketError error, Boolean disconnectOnFailure, String callerName)
at System.Net.Sockets.Socket.SendTo(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags, EndPoint remoteEP)
at System.Net.Sockets.Tests.SocketHelperArraySync.<>c__DisplayClass11_0.<SendToAsync>b__0()
at System.Threading.Tasks.Task`1[[System.Int32, System.Private.CoreLib, Version=10.0.0.0, Culture=neutral, PublicKeyToken=7cec85d7bea7798e]].InnerInvoke()
at System.Threading.Tasks.Task.<>c.<.cctor>b__288_0(Object obj)
at System.Threading.ExecutionContext.RunFromThreadPoolDispatchLoop(Thread threadPoolThread, ExecutionContext executionContext, ContextCallback callback, Object state)
2)    [FAIL] System.Net.Sockets.Tests.SendTo_SyncForceNonBlocking.Datagram_UDP_AccessDenied_Throws_DoesNotBind   Test name: System.Net.Sockets.Tests.SendTo_SyncForceNonBlocking.Datagram_UDP_AccessDenied_Throws_DoesNotBind
Exception messages: Assert.Equal() Failure: Values differ
Expected: AccessDenied
Actual:   NetworkUnreachable   Exception stack traces:    at System.Net.Sockets.Tests.SendTo`1.<Datagram_UDP_AccessDenied_Throws_DoesNotBind>d__8[[System.Net.Sockets.Tests.SocketHelperSyncForceNonBlocking, System.Net.Sockets.Tests, Version=10.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51]].MoveNext()
3)    [FAIL] System.Net.Sockets.Tests.SendTo_Apm.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint   Test name: System.Net.Sockets.Tests.SendTo_Apm.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint
Exception messages: Assert.NotNull() Failure: Value is null   Exception stack traces:    at System.Net.Sockets.Tests.SendTo`1.<Datagram_UDP_ShouldImplicitlyBindLocalEndpoint>d__7[[System.Net.Sockets.Tests.SocketHelperApm, System.Net.Sockets.Tests, Version=10.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51]].MoveNext()
4)    [FAIL] System.Net.Sockets.Tests.SendTo_Apm.Datagram_UDP_AccessDenied_Throws_DoesNotBind   Test name: System.Net.Sockets.Tests.SendTo_Apm.Datagram_UDP_AccessDenied_Throws_DoesNotBind
Exception messages: Assert.Equal() Failure: Values differ
Expected: AccessDenied
Actual:   NetworkUnreachable   Exception stack traces:    at System.Net.Sockets.Tests.SendTo`1.<Datagram_UDP_AccessDenied_Throws_DoesNotBind>d__8[[System.Net.Sockets.Tests.SocketHelperApm, System.Net.Sockets.Tests, Version=10.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51]].MoveNext()
5)    [FAIL] System.Net.Sockets.Tests.SendTo_MemoryNativeTask.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint   Test name: System.Net.Sockets.Tests.SendTo_MemoryNativeTask.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint
Exception messages: Assert.NotNull() Failure: Value is null   Exception stack traces:    at System.Net.Sockets.Tests.SendTo`1.<Datagram_UDP_ShouldImplicitlyBindLocalEndpoint>d__7[[System.Net.Sockets.Tests.SocketHelperMemoryNativeTask, System.Net.Sockets.Tests, Version=10.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51]].MoveNext()

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1167858
Error message validated: [Network is unreachable]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 10/8/2025 8:01:45 AM UTC

Report

Build	Definition	Step Name	Console log	Pull Request
1308580	dotnet/runtime	Build product	Log	#124836
1307919	dotnet/runtime	Build product	Log	#124804
1307121	dotnet/runtime	Build product	Log	#124663
1306660	dotnet/runtime	Build product	Log	#124664
1305957	dotnet/runtime	Build product	Log	#124326
1304911	dotnet/runtime	Build product	Log	#117261
1304367	dotnet/runtime	Build product	Log	#124374
1303113	dotnet/runtime	Send tests to Helix (Unix)	Log	#124667
1303144	dotnet/runtime	Build product	Log	#123920
1302601	dotnet/runtime	Build product	Log	#124646
1302597	dotnet/runtime	Build product	Log	#124646
1301374	dotnet/runtime	Build product	Log	#124374
1301130	dotnet/runtime	Build product	Log	#124003
1299330	dotnet/runtime	Build product	Log	#124561
1298611	dotnet/runtime	Send to Helix	Log	#124165
1298071	dotnet/runtime	Build product	Log	#124352
1296465	dotnet/runtime	Build product	Log	#124374
1294675	dotnet/runtime	Build product	Log	#124407
1294677	dotnet/runtime	Build product	Log	#124407
1294467	dotnet/runtime	Build product	Log	#124407
1294403	dotnet/runtime	Build product	Log	#124352
1294313	dotnet/runtime	Build product	Log	#124407
1293283	dotnet/runtime	Build product	Log	#123145
1293284	dotnet/runtime	Build	Log	#123145
1293186	dotnet/runtime	Build product	Log	#122093
1292248	dotnet/runtime	Build product	Log	#122526
1292091	dotnet/runtime	Build product	Log	#124303
1291645	dotnet/runtime	Build product	Log	#123145
1290817	dotnet/runtime	Build product	Log	#119109
1289349	dotnet/runtime	Build product	Log	#124258
1289191	dotnet/runtime	Build product	Log	#123145
1289126	dotnet/runtime	Build product	Log	#124258
1288977	dotnet/runtime	Build product	Log	#119432
1287365	dotnet/runtime	Build product	Log	#124107
1287065	dotnet/runtime	Build product	Log	#123614
1286241	dotnet/runtime	Build product	Log	#124173
1285664	dotnet/runtime	Build product	Log	#123145
1285486	dotnet/runtime	Build product	Log	#124003
1284706	dotnet/runtime	Build product	Log	#124077
1283872	dotnet/runtime	Build Tests	Log	#123469
1283800	dotnet/runtime	Build product	Log	#124106
1283229	dotnet/runtime	Build product	Log	#124077
1283134	dotnet/runtime	Build product	Log	#123292
1282624	dotnet/runtime	Build product	Log	#124081
1282295	dotnet/runtime	Build product	Log	#122056
1282104	dotnet/runtime	Build product	Log	#123611
1281922	dotnet/runtime	Build product	Log	#124019
1281890	dotnet/runtime	Build product	Log	#121906
1279744	dotnet/runtime	Build product	Log	#124003
1279260	dotnet/runtime	Build product	Log	#121906
1278201	dotnet/runtime	Build Tests	Log	#123377
2894058	dotnet-runtime	Build SuperPMI	Log
1277226	dotnet/runtime	Build product	Log	#123920
1277263	dotnet/runtime	Build product	Log	#123926
1275085	dotnet/runtime	Build product	Log	#122449
1275040	dotnet/runtime	Build product	Log	#123727
1274884	dotnet/runtime	Build product	Log	#123838
1274479	dotnet/runtime	Build product	Log	#123826
1273873	dotnet/runtime	Build product	Log	#123727
1273035	dotnet/runtime	Build product	Log	#123780
1271352	dotnet/runtime	Build product	Log	#123738
1271354	dotnet/runtime	Build product	Log	#123738
1270685	dotnet/runtime	Build product	Log	#123460
1270602	dotnet/runtime	Build product	Log	#123716
1269967	dotnet/runtime	Build product	Log	#122533
1269562	dotnet/runtime	Build product	Log	#123588
1269227	dotnet/runtime	Build product	Log	#122533
1269230	dotnet/runtime	Build product	Log	#122449
1269064	dotnet/runtime	Build product	Log	#123669
1268886	dotnet/runtime	Send to Helix	Log	#123584
1268379	dotnet/runtime	Send to Helix	Log	#122556
1268236	dotnet/runtime	Send to Helix	Log	#123022
1268160	dotnet/runtime	Send tests to Helix (Unix)	Log	#122386
1268051	dotnet/runtime	Send tests to Helix (Unix)	Log	#123640
1267956	dotnet/runtime	Send tests to Helix (Unix)	Log
1267897	dotnet/runtime	Send to Helix	Log	#123629
1267148	dotnet/runtime	Send to Helix	Log
1267177	dotnet/runtime	Send to Helix	Log	#121007

Build	Definition	Test	Pull Request
1304943	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1304312	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1301202	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1299943	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution	#124582
1298482	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution	#124220
1298564	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution	#124265
1298194	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1297926	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution	#111514
1297008	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1296880	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1296448	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1295158	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1292862	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1292161	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution	#124271
1291214	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1291195	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1291006	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1289925	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1288471	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1287831	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1287531	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1286065	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1284924	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1284564	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1284330	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1283968	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1283474	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1282804	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution	#124000
1281396	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution	#124000
1281149	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1280696	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1280629	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1280344	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1280330	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1279683	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1278595	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1278248	dotnet/runtime	System.Net.Sockets.Tests.SendTo_Eap.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint	#122556
1276232	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1276267	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1275948	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1272660	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1272086	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1271766	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1271202	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1271108	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution
1270642	dotnet/runtime	System.Net.Sockets.Tests.WorkItemExecution	#122373

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
2	22	124

[dotnet-policy-service]

Tagging subscribers to 'arch-android': @vitek-karas, @simonrozsival, @steveisok, @akoeplinger
See info in area-owners.md if you want to be subscribed.

[dotnet-policy-service]

Tagging subscribers to this area: @dotnet/ncl
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[MihuBot]

I'm a bot. Here is a possible related and/or duplicate issue (I may be wrong):

• [android] Connection issues in Sockets and Functional networking tests #104709

[vitek-karas]

Likely related to #119851 and #119852 they all seem to have similar behavior. It's possibly underlying platform issue, not specified to the failing tests.

[kotlarmilos]

It looks like the internet connection is blocked, or something similar. This reminds me of #114450.

[dotnet-policy-service]

Tagging subscribers to this area: @dotnet/ncl
See info in area-owners.md if you want to be subscribed.

[liveans]

Interestingly, the failure seems like the same as #114450, was there any update on Android arm infra lately? My suspicion is that: This is related to environment itself (similar to privacy setting thingy in #114450).