From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pekka Savola Subject: zd1211rw and mac80211: multicast/v6 doesn't work in 2.6.21.5 Date: Thu, 28 Jun 2007 08:51:37 +0300 (EEST) Message-ID: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed To: netdev@vger.kernel.org Return-path: Received: from netcore.fi ([193.94.160.1]:44568 "EHLO netcore.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752375AbXF1GDL (ORCPT ); Thu, 28 Jun 2007 02:03:11 -0400 Received: from netcore.fi (localhost [127.0.0.1]) by netcore.fi (8.13.8/8.13.8) with ESMTP id l5S5pcRA022828 for ; Thu, 28 Jun 2007 08:51:38 +0300 Received: from localhost (pekkas@localhost) by netcore.fi (8.13.8/8.13.8/Submit) with ESMTP id l5S5pbXj022825 for ; Thu, 28 Jun 2007 08:51:37 +0300 Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Hi, On Fedora 7 (kernel 2.6.21-1.3228.fc7, based on 2.6.21.5), my zd1211rw_mac80211 WLAN USB stick and multicast/v6 no longer works. On Fedora 6 (kernel 2.6.20, no mac80211) it was OK. I get "wlan0: duplicate address detected!" on dmesg when the kernel is trying to autoconfigure a global address. I suppose this is caused by the IPv6 stack seeing my own ICMPv6 neighbor solicitation and thinking it was originated by someone else: 08:46:21.762807 00:02:72:5b:dc:28 > 33:33:ff:5b:dc:28, ethertype IPv6 (0x86dd), length 78: (hlim 255, next-header: ICMPv6 (58), length: 24) :: > ff02::1:ff5b:dc28: [icmp6 sum ok] ICMP6, neighbor solicitation, length 24, who has 2001:708:10:90:202:72ff:fe5b:dc28 Strangely, the same error isn't printed with the link-local address which uses the same EUI-64. z1211rw Wiki seems to imply that this might be an issue in generic mac80211 code: http://www.linuxwireless.org/en/users/Drivers/zd1211rw/mac80211Issues It'd be nice to get this fixed. Or has it already been? -- Pekka Savola "You each name yourselves king, yet the Netcore Oy kingdom bleeds." Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings