Index: [Article Count Order] [Thread]

Date: Thu, 12 Jun 2008 18:04:51 +0200
From: Karsten Keil <kkeil@suse.de>
Subject: [users:00765] Re: Self_Test v4.0.1 ICMPv6 test v6LC.5.1.2 Part F
To: users@tahi.org
Message-Id: <20080612160451.GA31713@pingi.kke.suse.de>
In-Reply-To: <E230C7241C9FCF45951E65304AEAB1EC7D65E55E@GVW1103EXC.americas.hpqcorp.net>
References: <20080612120433.GA25632@pingi.kke.suse.de> <E230C7241C9FCF45951E65304AEAB1EC7D65E55E@GVW1103EXC.americas.hpqcorp.net>
X-Mail-Count: 00765

On Thu, Jun 12, 2008 at 12:56:09PM +0000, S, Sreenath wrote:
> Hi Karsten -
>   This is not an official answer, but since I'm working on 4443 I can
> answer this question. It is a requirement for RFC 4291 that packets received
> with destination address as ::1 be dropped and that is what this test case
> ensures. Here's the relevant section from 4291:
> 
> ----
> 2.5.3.  The Loopback Address
> 
>    The unicast address 0:0:0:0:0:0:0:1 is called the loopback address.
>    It may be used by a node to send an IPv6 packet to itself.  It must
>    not be assigned to any physical interface.  It is treated as having
>    Link-Local scope, and may be thought of as the Link-Local unicast
>    address of a virtual interface (typically called the "loopback
>    interface") to an imaginary link that goes nowhere.
> 
>    The loopback address must not be used as the source address in IPv6
>    packets that are sent outside of a single node.  An IPv6 packet with
>    a destination address of loopback must never be sent outside of a
>    single node and must never be forwarded by an IPv6 router.  A packet
>    received on an interface with a destination address of loopback must
>    be dropped.

OK with this I think the test is OK and  makes sense, the test description
should be updated (needed ayway,since it refers to link local address and
not to loopback address) and the description should also refer to this RFC
to avoid such questions.

> ----
> 
>  However, I cannot answer the question about why some tests from RFC 4291
> got implemented in a section that is marked as RFC 4443. Akisada-san would
> be the right person to answer that question.

For me this is OK, as long there is no seperate section for this RFC.

> 
> Hope that helps,

Yes thanks a lot.


-- 
Karsten Keil
SuSE Labs
ISDN and VOIP development
SUSE LINUX Products GmbH, Maxfeldstr.5 90409 Nuernberg, GF: Markus Rex, HRB 16746 (AG Nuernberg)