This failure group occurred in the following build:

• https://dev.azure.com/dnceng/public/_build/results?buildId=602040
• netcoreapp5.0-Linux-Release-x64-CoreCLR_release-SLES.12.Amd64.Open

Failure text is pretty much the same for all the tests.

    System.Net.Sockets.Tests.UnixDomainSocketTest.Socket_CreateUnixDomainSocket_Throws_OnWindows [SKIP]
      Condition(s) not met: "IsSubWindows10"
    System.Net.Sockets.Tests.SocketOptionNameTest.MulticastInterface_Set_AnyInterface_Succeeds [FAIL]
      System.Net.Sockets.SocketException : Network is unreachable
      Stack Trace:
        /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.cs(5171,0): at System.Net.Sockets.Socket.UpdateStatusAfterSocketErrorAndThrowException(SocketError error, String callerName)
        /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.cs(1420,0): at System.Net.Sockets.Socket.SendTo(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags, EndPoint remoteEP)
        /_/src/libraries/System.Net.Sockets/src/System/Net/Sockets/Socket.cs(1450,0): at System.Net.Sockets.Socket.SendTo(Byte[] buffer, EndPoint remoteEP)
        /_/src/libraries/System.Net.Sockets/tests/FunctionalTests/SocketOptionNameTest.cs(303,0): at System.Net.Sockets.Tests.SocketOptionNameTest.CreateBoundUdpSocket(Int32& localPort)
        /_/src/libraries/System.Net.Sockets/tests/FunctionalTests/SocketOptionNameTest.cs(90,0): at System.Net.Sockets.Tests.SocketOptionNameTest.MulticastInterface_Set_Helper(Int32 interfaceIndex)
        /_/src/libraries/System.Net.Sockets/tests/FunctionalTests/SocketOptionNameTest.cs(72,0): at System.Net.Sockets.Tests.SocketOptionNameTest.MulticastInterface_Set_AnyInterface_Succeeds()
        --- End of stack trace from previous location ---

All the following tests failed in that build

System.Net.Sockets.Tests Work Item 1
System.Net.Sockets.Tests.SendTo+Async+Apm.Datagram_UDP_AccessDenied_Throws_DoesNotBind 1
System.Net.Sockets.Tests.SendTo+Async+Apm.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint 1
System.Net.Sockets.Tests.SendTo+Async+Eap.Datagram_UDP_AccessDenied_Throws_DoesNotBind 1
System.Net.Sockets.Tests.SendTo+Async+Eap.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint 1
System.Net.Sockets.Tests.SendTo+Async+Task.Datagram_UDP_AccessDenied_Throws_DoesNotBind 1
System.Net.Sockets.Tests.SendTo+Async+Task.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint 1
System.Net.Sockets.Tests.SendTo+Sync+ArrayForceNonBlocking.Datagram_UDP_AccessDenied_Throws_DoesNotBind 1
System.Net.Sockets.Tests.SendTo+Sync+ArrayForceNonBlocking.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint 1
System.Net.Sockets.Tests.SendTo+Sync+MemoryArrayTask.Datagram_UDP_AccessDenied_Throws_DoesNotBind 1
System.Net.Sockets.Tests.SendTo+Sync+MemoryArrayTask.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint 1
System.Net.Sockets.Tests.SendTo+Sync+MemoryNativeTask.Datagram_UDP_AccessDenied_Throws_DoesNotBind 1
System.Net.Sockets.Tests.SendTo+Sync+MemoryNativeTask.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint 1
System.Net.Sockets.Tests.SendTo+Sync+Span.Datagram_UDP_AccessDenied_Throws_DoesNotBind 1
System.Net.Sockets.Tests.SendTo+Sync+Span.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint 1
System.Net.Sockets.Tests.SendTo+Sync+SpanForceNonBlocking.Datagram_UDP_AccessDenied_Throws_DoesNotBind 1
System.Net.Sockets.Tests.SendTo+Sync+SpanForceNonBlocking.Datagram_UDP_ShouldImplicitlyBindLocalEndpoint 1
System.Net.Sockets.Tests.SocketOptionNameTest.MulticastInterface_Set_AnyInterface_Succeeds 1
System.Net.Sockets.Tests.SocketOptionNameTest.MulticastOption_CreateSocketSetGetOption_GroupAndInterfaceIndex_SetSucceeds_GetThrows 1