[jboss-jira] [JBoss JIRA] Resolved: (JGRP-1095) MPING: doesn't work with IPv6

[Bela Ban (JIRA)]

     [ https://jira.jboss.org/jira/browse/JGRP-1095?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bela Ban resolved JGRP-1095.
----------------------------

    Resolution: Done


The reason for the dailure was that the bind_addr in TCP was link-local and scoped (scope-id=3). This address was then multicast by MPING. The receiver tried to send a response by connecting to the LL scoped IPv6 address, which failed, so the sender never got a response.

The solution was to introduce a utility method Util.connect(), which checks if the destination address is a LL scoped IPv6 address and - if yes - replaces it with an unscoped one.

> MPING: doesn't work with IPv6
> -----------------------------
>
>                 Key: JGRP-1095
>                 URL: https://jira.jboss.org/jira/browse/JGRP-1095
>             Project: JGroups
>          Issue Type: Task
>            Reporter: Bela Ban
>            Assignee: Bela Ban
>             Fix For: 2.8
>
>
> Running MPING with TCP works with IPv4, but not with IPv6 (members don't find each other). The config is
> <MPING mcast_addr="ff0e::8:8:5"
>            mcast_port="7200"
>            num_ping_requests="1"
>            timeout="3000" 
>            num_initial_members="3"/>

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