From: Hannes Frederic Sowa <hannes@stressinduktion•org>
To: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6•org>
Cc: Erik Hugne <erik.hugne@ericsson•com>, netdev@vger•kernel.org
Subject: Re: [IPv6] interface-local multicast escapes the local node
Date: Thu, 7 Feb 2013 02:00:10 +0100 [thread overview]
Message-ID: <20130207010010.GD19537@order.stressinduktion.org> (raw)
In-Reply-To: <51128985.2010701@linux-ipv6.org>
On Thu, Feb 07, 2013 at 01:49:09AM +0900, YOSHIFUJI Hideaki wrote:
> >>
> >> NAK.
> >>
> >> Well, do you have relevant RFC?
> >> RFC4291 says that we should drop ff00::/16, but not ff01::/16.
> >
> > I know what you mean, the RFC does not state it directly. Hm, the BSDs seem to
> > drop such destination addresses, too, if they don't originate from a loopback
> > interface. Or did you mean that there is a flaw in the skb->pkt_type !=
> > PACKET_LOOPBACK condition?
>
> We do not drop ff01::/16, because RFC is silent about it.
I just did a little bit of research on this topic and found this:
RFC4541 3. IPv6 Considerations:
MLD messages are also not sent regarding groups with addresses in the
range FF00::/15 (which encompasses both the reserved FF00::/16 and
node-local FF01::/16 IPv6 address spaces). These addresses should
never appear in packets on the link.
It gives a strong indication that we should drop these packets. What do you
think?
Thanks,
Hannes
next prev parent reply other threads:[~2013-02-07 1:00 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-06 8:49 [IPv6] interface-local multicast escapes the local node Erik Hugne
2013-02-06 12:12 ` Hannes Frederic Sowa
2013-02-06 13:07 ` Erik Hugne
2013-02-06 13:49 ` Hannes Frederic Sowa
2013-02-06 15:06 ` Erik Hugne
2013-02-06 15:12 ` Hannes Frederic Sowa
2013-02-06 15:32 ` YOSHIFUJI Hideaki
2013-02-06 16:04 ` Hannes Frederic Sowa
2013-02-06 16:18 ` Eric Dumazet
2013-02-06 16:25 ` Hannes Frederic Sowa
2013-02-06 16:49 ` YOSHIFUJI Hideaki
2013-02-07 1:00 ` Hannes Frederic Sowa [this message]
2013-02-07 7:28 ` Erik Hugne
2013-02-07 15:41 ` YOSHIFUJI Hideaki
2013-02-06 15:24 ` YOSHIFUJI Hideaki
2013-02-06 16:54 ` Hannes Frederic Sowa
2013-02-09 12:10 ` Hannes Frederic Sowa
2013-02-09 14:12 ` YOSHIFUJI Hideaki
2013-02-09 23:08 ` Hannes Frederic Sowa
2013-02-10 9:59 ` Hannes Frederic Sowa
2013-02-10 10:57 ` YOSHIFUJI Hideaki
2013-02-10 15:32 ` Hannes Frederic Sowa
2013-02-10 18:42 ` YOSHIFUJI Hideaki
2013-02-10 18:49 ` Hannes Frederic Sowa
2013-02-11 11:13 ` [PATCH RFC 1/2] ipv6: introdcue __ipv6_addr_needs_scope_id and ipv6_iface_scope_id helper functions Hannes Frederic Sowa
2013-02-11 13:36 ` YOSHIFUJI Hideaki
2013-02-11 11:13 ` [PATCH RFC 2/2] ipv6: use newly introduced helper functions __ipv6_addr_needs_scope_id and ipv6_iface_scope_id Hannes Frederic Sowa
2013-02-09 15:50 ` [IPv6] interface-local multicast escapes the local node YOSHIFUJI Hideaki
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