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Re: slp on dual stack linux box
by Chuck-66
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Hi,
Thank you for the prompt reply. I went ahead and changed to bind to multicast address = "FF05::1:1000". And it still was not able to locate the services. One thing I noticed in the log though is that calling InetAddress.getLocalHost() returns an IPv4 address - ctaf5/172.16.109.82. Another strange twist is running this application on a dual stack windows XP OS works (and calling InetAddress.getLocalHost() returns an IPv4 address too) ! I've attached a zip file containing the linux log as well as the windows log. Thanks again for the help.
Regards,
Chuck
On Fri, Jan 23, 2009 at 12:38 PM, Simone Bordet <simone.bordet@...> wrote:
Hi,
The specification for SLP on IPv6 is RFC 3111, which specify different
On Fri, Jan 23, 2009 at 17:49, Chuck <foxman74@...> wrote:
> Hello LiveTribe Team,
>
> When I run a service agent and a user agent on a dual stack linux box
> using an IPv6 multicast address, the service discovery does not work. But
> when I run the same code bound to an IPv4 multicast address, it all works
> like a charm. The unfortunate thing is that we need slp discovery to run on
> IPv6. I've attached the log file of my IPv6 run. What could be the reason
> for slp to not run on IPv6?
addresses for binding directory agents and service agents to multicast
addresses so they can be found. This is currently not implemented in
LiveTribe SLP.
So there is SLP for IPv4 and SLP for IPv6, and they're like 2
different beasts (apart the SLP messages which of course are
identical).
I think you are in a mixed situation where you're using SLP for IPv4
on an IPv6 stack. There may be a small chance that this will work, but
I am not sure.
Specifically, from your logs I see that you are binding to FF01::1
(line 317 and 330). This multicast address is the equivalent of
127.0.0.1, so basically no packet ever hits the cable.
Can you configure that correctly ? Most of the times, this is due to
the fact that the host configuration is not setup properly, so double
check your /etc/hosts file. Doing InetAddress.getLocalhost() should
*not* return the loopback address, but the real address of the host.
Simon
--
http://bordet.blogspot.com
---
Finally, no matter how good the architecture and design are,
to deliver bug-free software with optimal performance and reliability,
the implementation technique must be flawless. Victoria Livschitz
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