Date: Tue, 30 Aug 2005 13:26:50 +1200 From: Andrew Thompson <thompsa@freebsd.org> To: "Bruce A. Mah" <bmah@freebsd.org> Cc: freebsd-net@freebsd.org Subject: Re: if_bridge and IPv6? Message-ID: <20050830012650.GC55642@heff.fud.org.nz> In-Reply-To: <1125364782.19062.3.camel@tomcat.kitchenlab.org> References: <1125346643.2344.31.camel@localhost> <20050829211720.GA55642@heff.fud.org.nz> <1125351478.2344.44.camel@localhost> <1125364782.19062.3.camel@tomcat.kitchenlab.org>
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On Mon, Aug 29, 2005 at 06:19:42PM -0700, Bruce A. Mah wrote: > If memory serves me right, Bruce A. Mah wrote: > > If memory serves me right, Andrew Thompson wrote: > > > > > From what I can tell this is from the bridge itself, does bridging work > > > between ipv6 hosts on either side of the bridge? > > > > Hmm...I haven't tried that yet. Unfortunately I'm not in close > > proximity to the system in question at the moment, so it'll be a few > > hours (evening, San Francisco time) until I can try this. I'll test and > > report back. > > Bridging of IPv6 packets going between two hosts on either side of the > bridge appears to work just fine (to the point where I can do ping6 and > ssh across the bridge). Good to hear something works :) > > PS. Food for thought: Should bridge devices have IFF_MULTICAST set? > > Mine doesn't. > > > > hornet# ifconfig bridge0 > > bridge0: flags=41<UP,RUNNING> mtu 1500 > > inet (foo) netmask 0xffffff00 > > inet6 (bar) prefixlen 64 > > ether ac:de:48:cd:e2:32 > > priority 32768 hellotime 2 fwddelay 15 maxage 20 > > member: sis1 flags=3<LEARNING,DISCOVER> > > member: sis0 flags=3<LEARNING,DISCOVER> > > This looks more and more suspicious to me. IPv6 ND requires multicast > to work and there are several explicit checks for IFF_MULTICAST in the > IPv6 output path and neighbor discovery code. I think you are right, i'll look into it. Andrew
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