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System.Net.NameResolution.Tests DNS failures: Name or service not known #126641

@kotlarmilos

Description

@kotlarmilos

Build Information

Build: https://dev.azure.com/dnceng-public/cbb18261-c48f-4abb-8651-8cdcb5474649/_build/results?buildId=1368622
Build error leg or test failing: System.Net.NameResolution.Tests.GetHostByNameTest.DnsObsoleteBeginEndGetHostByName_EmptyString_ReturnsHostName
Pull request: #125647

Error Message

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

{
  "ErrorMessage": "",
  "ErrorPattern": "System\\.Net\\.Sockets\\.SocketException : Name or service not known|System\\.Exception : Failed for empty hostname",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=1368622
Error message validated: [System\.Net\.Sockets\.SocketException : Name or service not known|System\.Exception : Failed for empty hostname]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 4/8/2026 12:37:43 PM UTC

Report

Build Definition Test Pull Request
1370807 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126587
1370894 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses
1370423 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.Dns_GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126322
1370594 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126621
1370561 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126124
1370564 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126522
1367903 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126348
1367834 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126543
1370568 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #125613
1366930 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126371
1369043 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126112
1368922 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126509
1367818 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126521
1370450 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #125835
1370412 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #125559
1370311 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126562
1370306 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126648
1370295 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #108158
1370287 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126445
1370270 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126587
1370333 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.Dns_GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126152
1370261 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126588
1370239 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #122649
1370220 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126645
1370255 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.Dns_GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #125955
1370161 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126047
1370118 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126622
1368340 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126579
1370070 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126124
1370025 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126629
1369180 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #125900
1369946 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #125347
1369794 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #125559
1369801 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126199
1369758 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #126633
1368420 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #124266
1368622 dotnet/runtime System.Net.NameResolution.Tests.GetHostEntryTest.GetHostEntry_DisableIPv6_ExcludesIPv6Addresses #125647

Summary

24-Hour Hit Count 7-Day Hit Count 1-Month Count
37 37 37

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    Known Build ErrorUse this to report build issues in the .NET Helix tabarea-System.Netblocking-clean-ciBlocking PR or rolling runs of 'runtime' or 'runtime-extra-platforms'

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