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https://issues.apache.org/jira/browse/HADOOP-19695?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ferenc Erdelyi reassigned HADOOP-19695:
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Assignee: Ferenc Erdelyi
> Add dualstack/IPv6 Support to HttpServer2
> -----------------------------------------
>
> Key: HADOOP-19695
> URL: https://issues.apache.org/jira/browse/HADOOP-19695
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: hadoop-common
> Reporter: Ferenc Erdelyi
> Assignee: Ferenc Erdelyi
> Priority: Minor
>
> To enable dualstack and IPv6 support, we use
> InetAddress.getAllByName(hostname) to resolve the IP addresses of a host.
> When the system property java.net.preferIPv4Stack is set to true, only IPv4
> addresses are returned and any IPv6 addresses are ignored, so no extra check
> is needed to exclude IPv6.
> When java.net.preferIPv4Stack is false, both IPv4 and IPv6 addresses may be
> returned, and any IPv6 addresses will also be added as connectors.
> To disable IPv4, you need OS level configuration.
>
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