From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f172.google.com ([209.85.212.172]:61192 "EHLO mail-wi0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751511AbaJTRYp (ORCPT ); Mon, 20 Oct 2014 13:24:45 -0400 Received: by mail-wi0-f172.google.com with SMTP id n3so7781818wiv.17 for ; Mon, 20 Oct 2014 10:24:44 -0700 (PDT) Date: Mon, 20 Oct 2014 19:24:38 +0200 From: Alexander Aring Subject: Re: multicast problems Message-ID: <20141020172435.GA31180@omega> References: <5444F889.5010600@xsilon.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <5444F889.5010600@xsilon.com> Sender: linux-wpan-owner@vger.kernel.org List-ID: To: Simon Vincent Cc: linux-wpan@vger.kernel.org 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