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https://issues.apache.org/jira/browse/ZOOKEEPER-667?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12925923#action_12925923
 ] 

Gunnar Wagenknecht commented on ZOOKEEPER-667:
----------------------------------------------

I'm wondering if there is something else to do for proper connecting on IPv6 
systems. I'm on Windows 7 with Java 6 and I do have the following exception in 
my logs.

When connecting I specified {{localhost:2181}}.
{noformat}
21:20:04.157 [Worker-0-SendThread()] INFO  org.apache.zookeeper.ClientCnxn - 
Opening socket connection to server localhost/0:0:0:0:0:0:0:1:2181
21:20:04.188 [Worker-0-SendThread(localhost:2181)] WARN  
org.apache.zookeeper.ClientCnxn - Session 0x0 for server null, unexpected 
error, closing socket connection and attempting reconnect
java.net.SocketException: Address family not supported by protocol family: 
connect
        at sun.nio.ch.Net.connect(Native Method) ~[na:1.6.0_21]
        at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:507) 
~[na:1.6.0_21]
        at 
org.apache.zookeeper.ClientCnxn$SendThread.startConnect(ClientCnxn.java:1009) 
~[na:na]
        at org.apache.zookeeper.ClientCnxn$SendThread.run(ClientCnxn.java:1036) 
~[na:na]
{noformat}


> java client doesn't allow ipv6 numeric connect string
> -----------------------------------------------------
>
>                 Key: ZOOKEEPER-667
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-667
>             Project: Zookeeper
>          Issue Type: Bug
>          Components: java client
>    Affects Versions: 3.2.2
>            Reporter: Patrick Hunt
>            Assignee: Patrick Hunt
>            Priority: Critical
>             Fix For: 3.3.0
>
>
> The java client doesn't handle ipv6 numeric addresses as they are colon (:) 
> delmited. After splitting the host/port on : we look for the port as the 
> second entry in the array rather than the last entry in the array.

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