* multicast problems
@ 2014-10-20 11:56 Simon Vincent
2014-10-20 17:24 ` Alexander Aring
0 siblings, 1 reply; 2+ messages in thread
From: Simon Vincent @ 2014-10-20 11:56 UTC (permalink / raw)
To: linux-wpan
Has anyone had any luck using Site-Local or Realm-Local multicast over
14.5/6lowpan?
I find if I subscribe to a multicast group using a site-local or
realm-local scope I can't ping the multicast group. If I try the same on
a ethernet interface I can ping the multicast group no problems.
Simon
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: multicast problems
2014-10-20 11:56 multicast problems Simon Vincent
@ 2014-10-20 17:24 ` Alexander Aring
0 siblings, 0 replies; 2+ messages in thread
From: Alexander Aring @ 2014-10-20 17:24 UTC (permalink / raw)
To: Simon Vincent; +Cc: linux-wpan
Hi Simon,
On Mon, Oct 20, 2014 at 12:56:57PM +0100, Simon Vincent wrote:
> Has anyone had any luck using Site-Local or Realm-Local multicast over
> 14.5/6lowpan?
>
> I find if I subscribe to a multicast group using a site-local or realm-local
> scope I can't ping the multicast group. If I try the same on a ethernet
> interface I can ping the multicast group no problems.
mhh, did you also tried it without the overwritten pkt_type value
PACKET_HOST? Just drop it in 802.15.4 6LoWPAN for testing case.
Maybe, you hit the problem at [0].
This occurs when "Type 131 - Multicast Listener Report" arrived. [1]
Don't know much about Multicast Listener Report at the moment and if this
is really necessary for your use case.
Just give it a try. It's something with multicast and I know there is
some issue right now.
- Alex
[0] http://lxr.free-electrons.com/source/net/ipv6/mcast.c#L1426
[1] http://www.iana.org/assignments/icmpv6-parameters/icmpv6-parameters.xhtml#icmpv6-parameters-codes-9
^ permalink raw reply [flat|nested] 2+ messages in thread
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