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https://issues.apache.org/jira/browse/SOLR-9183?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15314207#comment-15314207
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Keith Laban commented on SOLR-9183:
-----------------------------------

Stepping through the code: 
https://github.com/apache/lucene-solr/blob/master/solr/core/src/java/org/apache/solr/cloud/rule/ImplicitSnitch.java#L168
 
is returning an internal {{10.xx.xx.xxx}} ip address. Which seems to be because 
the DNS is defaulting to some internal ip address. The following produced the 
same ip.

{code}
$ dig 192.168.1.2.1 +short
10.xx.xx.xxx
{code}

Perhaps different validation should be done if the validity of the ip address 
format is required.

> Test ImplicitSnitchTest.testGetTags_with_wrong_ipv4_format_ip_returns_nothing 
> is failing
> ----------------------------------------------------------------------------------------
>
>                 Key: SOLR-9183
>                 URL: https://issues.apache.org/jira/browse/SOLR-9183
>             Project: Solr
>          Issue Type: Bug
>            Reporter: Keith Laban
>
> This is causing tests to fail for me on 6x and master
> The test introduced in SOLR-8522
> {{ImplicitSnitchTest.testGetTags_with_wrong_ipv4_format_ip_returns_nothing}} 
> is failing for me.
> {code}
> java.lang.AssertionError: 
> Expected: is <0>
>      got: <1>
>       at org.junit.Assert.assertThat(Assert.java:780)
>       at org.junit.Assert.assertThat(Assert.java:738)
>       at 
> org.apache.solr.cloud.rule.ImplicitSnitchTest.testGetTags_with_wrong_ipv4_format_ip_returns_nothing(ImplicitSnitchTest.java:101)
>       at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>       at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
>       at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>       at java.lang.reflect.Method.invoke(Method.java:497)
>       at 
> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45)
>       at 
> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
>       at 
> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42)
>       at 
> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
>       at 
> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
>       at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:68)
>       at 
> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47)
>       at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
>       at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
>       at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
>       at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
>       at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
>       at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
>       at 
> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
>       at 
> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
>       at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
>       at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
>       at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
>       at 
> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
> {code}
> I suspect that 
> https://github.com/apache/lucene-solr/blob/master/solr/core/src/java/org/apache/solr/cloud/rule/ImplicitSnitch.java#L130
>  should be returning null causing the failures.
> I'll run the test at home to see if it has something to do with the corporate 
> network I'm running on.



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