<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div><blockquote type="cite" class=""><div class="">On 10 Jun 2015, at 13:42, Jeremy Visser <<a href="mailto:jeremy@sunriseroad.net" class="">jeremy@sunriseroad.net</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">On 10/06/15 18:23, Lorenzo Colitti wrote:<br class=""><blockquote type="cite" class="">are *all* IPv6 packets blocked, or just multicast packets? I know<br class="">that a number of devices will drop multicast IPv6 packets.<br class=""></blockquote><br class="">On that note, some wireless access points have the ability to convert multicast packets into unicast packets. Both the Cisco and HP systems I have access to support this.<br class=""><br class="">Believe it or not, it’s actually billed as an optimisation, as unicast packets generally use a faster modulation than multicast. Makes sense, because if you send only one copy of a packet wirelessly, all devices (even the ones with the crappiest signals) need to be able to receive it reasonably reliably.<br class=""><br class="">If that option is available to you, and if this is specific to multicast, this may be an interesting hack.<br class=""></div></blockquote><br class=""></div><div>That reminds me, we had an interesting ‘feature’ here where we were seeing triple copies of RAs and also Bonjour messages. The discussion about that led to this info:</div><div><br class=""></div><div><a href="http://www.cisco.com/c/en/us/td/docs/wireless/controller/8-0/configuration-guide/b_cg80/b_cg80_chapter_0100110.html" class="">http://www.cisco.com/c/en/us/td/docs/wireless/controller/8-0/configuration-guide/b_cg80/b_cg80_chapter_0100110.html</a></div><div><br class=""></div><div>which I assume is aimed at those doing multicast video streaming of IP TV or similar (as we do here). That may have some impact on multicast for IPv6.</div><div><br class=""></div><div>Tim</div><br class=""></body></html>