Re: [javagroups-users] bind_address problems

[Bela B. <be...@ya...>]

If you set bind_addr (or -Djgroups.bind_addr), then JGroups will try to 
use the interface you defined. However, if that interface is not enabled 
for IPv6, then of course this will fail...

Dan Armbrust wrote:
> To followup myself...
>
>
> It appears that this has to do with IPv6.
>
> I was using this code:
>
>         if (System.getProperty("os.name").equals("Linux") &&
> System.getProperty("java.specification.version").equals("1.5"))
>         {
>         	//required due to a bug in Java 1.5 - supposed to be fixed in 1.6.
>         	//see http://wiki.jboss.org/wiki/Wiki.jsp?page=IPv6
>         	System.setProperty("java.net.preferIPv4Stack", "true");
>         }
>
> before I started the  cluster code.  However, that doesn't appear to
> have worked.
>
> JGroups continued trying to multicast on the wrong network interface.
> I confirmed this in 2.5.0, and 2.6.2.
>
> Putting -Djava.net.preferIPv4Stack=true in the JVM startup command
> seems to have fixed the problems I was having.
>
> Seems like there is probably a bug here... but perhaps in the JVM?
>
> I was using a recent 1.5 JVM.
>
>
>   

-- 
Bela Ban
Lead JGroups / Clustering Team
JBoss - a division of Red Hat