[jboss-jira] [JBoss JIRA] Commented: (JGRP-1189) Convert IPv4 multicast addresses to IPv6 multicast addresses in an IPv6 stack

[Bela Ban (JIRA)]

    [ https://jira.jboss.org/jira/browse/JGRP-1189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12525107#action_12525107 ] 

Bela Ban commented on JGRP-1189:
--------------------------------

Okay, the system property of the prefix is jgroups.ipmcast.prefix, the default is FF0e::

> Convert IPv4 multicast addresses to IPv6 multicast addresses in an IPv6 stack
> -----------------------------------------------------------------------------
>
>                 Key: JGRP-1189
>                 URL: https://jira.jboss.org/jira/browse/JGRP-1189
>             Project: JGroups
>          Issue Type: Feature Request
>            Reporter: Bela Ban
>            Assignee: Bela Ban
>             Fix For: 2.10
>
>
> When we run a config with mcast_addr="239.5.5.5" in an IPv6 stack, then the channel won't be created due to the sanity check exception.
> Solution: map the IPv4 multicast address to an IPv6 equivalent, e.g.
> 239.5.5.5 --> FF0e::239.5.5.5, as outlined in [1]
> [1] http://www.6net.org/publications/standards/draft-venaas-mboned-v4v6mcastgw-00.txt
> [2] http://www.faqs.org/rfcs/rfc2529.html 

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