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https://issues.apache.org/jira/browse/CASSANDRA-7669?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14084915#comment-14084915
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Robert Stupp commented on CASSANDRA-7669:
-----------------------------------------

It's [~aholmber]'s patch (just did some testing)

> nodetool fails to connect when ipv6 host is specified
> -----------------------------------------------------
>
>                 Key: CASSANDRA-7669
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7669
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Tools
>         Environment: java version "1.7.0_65"
> Java(TM) SE Runtime Environment (build 1.7.0_65-b17)
> Java HotSpot(TM) 64-Bit Server VM (build 24.65-b04, mixed mode)
>            Reporter: Adam Holmberg
>            Assignee: Robert Stupp
>            Priority: Trivial
>             Fix For: 1.2.19, 2.0.10, 2.1.0
>
>         Attachments: nodetool_url_fmt.txt
>
>
> The NodeProbe fmtUrl does not account for ipv6 addresses specified for 
> 'host'. 
> nodetool -h with ipv6 host address fails with cryptic error message
> Adding square brackets as in http://www.ietf.org/rfc/rfc3986.txt section 
> 3.2.2 corrects this behavior. Patch attached.
> {code:title=Before}
> aholmberg-rmbp15:cassandra-2.1.0-rc4 adamholmberg$ for h in localhost 
> 127.0.0.1 ::1 0::1; do cmd="bin/nodetool -h $h -p 7100 version"; echo $cmd; 
> eval $cmd; done
> bin/nodetool -h localhost -p 7100 version
> ReleaseVersion: 2.1.0-rc4-SNAPSHOT
> bin/nodetool -h 127.0.0.1 -p 7100 version
> ReleaseVersion: 2.1.0-rc4-SNAPSHOT
> bin/nodetool -h ::1 -p 7100 version
> nodetool: For input string: ":1:7100"
> See 'nodetool help' or 'nodetool help <command>'.
> bin/nodetool -h 0::1 -p 7100 version
> nodetool: For input string: ":1:7100"
> See 'nodetool help' or 'nodetool help <command>’.
> {code}
> {code:title=After}
> aholmberg-rmbp15:cassandra-2.1.0-rc4 adamholmberg$ for h in localhost 
> 127.0.0.1 ::1 0::1; do cmd="bin/nodetool -h $h -p 7100 version"; echo $cmd; 
> eval $cmd; done
> bin/nodetool -h localhost -p 7100 version
> ReleaseVersion: 2.1.0-rc4-SNAPSHOT
> bin/nodetool -h 127.0.0.1 -p 7100 version
> ReleaseVersion: 2.1.0-rc4-SNAPSHOT
> bin/nodetool -h ::1 -p 7100 version
> ReleaseVersion: 2.1.0-rc4-SNAPSHOT
> bin/nodetool -h 0::1 -p 7100 version
> ReleaseVersion: 2.1.0-rc4-SNAPSHOT
> {code}



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