[Building Sakai] Protocol family unavailable error

[David Horwitz]

Hohum well that didn't fix it :-(

D
On 09/07/2012 02:27 PM, David Horwitz wrote:
> I sometimes think we will move to IPv6 round the time the IPv8 spec is
> published ;-)
>
> I set the javaopts bellow and it seems to have fixed the issue. Thanks!
>
> D
>
> On 09/06/2012 01:13 PM, Matthew Buckett wrote:
>> On Thu, Sep 6, 2012 at 10:08 AM, David Horwitz <david.horwitz at uct.ac.za> wrote:
>>>> 2012-09-06 10:58:48,064 ERROR TP-Processor28
>>>> org.sakaiproject.calendar.impl.BaseExternalCalendarSubscriptionService
>>>> - Unable to read calendar subscription
>>>> '/calendar/ical/*************%40group.calendar.google.com/public/basic.ics'
>>>> from URL (I/O Error):
>>>> https://www.google.com/calendar/ical/rv9klcp1bn06etdd4aarcm735c%40group.calendar.google.com/public/basic.ics
>>>> java.net.SocketException: Protocol family unavailable
>>> All seem to be from Google. Now googling and looking at our config I
>>> suspect that this is IPv6 related - the DNS lookup is returning  an IPv6
>>> address but our Vula nodes don't have IPv8 support.
>> IPv8 wow!
>>
>> Have you tried telling the JVM to prefer IPv4 stack (system property):
>>
>> java.net.preferIPv4Stack=true
>>
>> although it should be using the IPv4 addresses in preference to IPv6
>> ones even when using the IPv6 stack, the other one to try is:
>>
>> java.net.preferIPv6Addresses=false
>>
>
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