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Date: Wed, 16 Jul 2008 10:35:37 +0900
From: Yukiyo Akisada <akisada@tahi.org>
Subject: [users:00828] Re: Questions about Interoperability Test for phase2-core
To: Toyo Abe <tabe@miraclelinux.com>
Cc: users@tahi.org
Message-Id: <20080716103537.7285b479.akisada@tahi.org>
In-Reply-To: <487D4F14.6030103@miraclelinux.com>
References: <4871AD9A.6010303@miraclelinux.com>	<20080714120336.9054abfa.akisada@tahi.org>	<487D4F14.6030103@miraclelinux.com>
X-Mail-Count: 00828

Abe-san,

> BTW, I found the way to enlarge the queue length.
> I'd like to note it for the record. Just run the following command.
>   # sysctl -w net.inet6.icmp6.nd6_maxqueuelen=10
> This works on FreeBSD6.1 or later.
> On NetBSD4.0 or later, the command should be changed like this.
>   # sysctl -w net.inet6.icmp6.maxqueuelen=10

Thanks for useful information.
I didn't know it!



On Wed, 16 Jul 2008 10:29:56 +0900
Toyo Abe <tabe@miraclelinux.com> wrote:

> Akisada-san,
> 
> Thanks for your kind response.
> 
> Yukiyo Akisada wrote:
> > Hi, Abe-san.
> > 
> > For 1st question)
> > 
> >     You can use them for your environment.
> >     Your list satisfies IPv6 Ready Logo requirements,
> >     but I have a suggestion about it.
> >     I feel that using other OS (ex, Open BSD) is better than KAME
> >     because KAME already had stopped the activity long time ago.
> >     If you have the product other than free software OS,
> >     using the product is the best.
> >
> Indeed. I'll consider it.
> 
>  
> > For 2nd question)
> > 
> >     It is the correct behavior according to RFC 4861.
> > 
> >     7.2.2.  Sending Neighbor Solicitations
> >     ------------------------------------------------------------------------
> >     3440    While waiting for address resolution to complete, the sender MUST,
> >     3441    for each neighbor, retain a small queue of packets waiting for
> >     3442    address resolution to complete.  The queue MUST hold at least one
> >     3443    packet, and MAY contain more.  However, the number of queued packets
> >     3444    per neighbor SHOULD be limited to some small value.  When a queue
> >     3445    overflows, the new arrival SHOULD replace the oldest entry.  Once
> >     3446    address resolution completes, the node transmits any queued packets.
> >     ------------------------------------------------------------------------
> >
> Thanks for the information.
> BTW, I found the way to enlarge the queue length.
> I'd like to note it for the record. Just run the following command.
>   # sysctl -w net.inet6.icmp6.nd6_maxqueuelen=10
> This works on FreeBSD6.1 or later.
> On NetBSD4.0 or later, the command should be changed like this.
>   # sysctl -w net.inet6.icmp6.maxqueuelen=10
> 
> 
> Thank you,
> -toyo
>  
> > Thanks,
> > 
> > 
> > On Mon, 07 Jul 2008 14:46:02 +0900
> > Toyo Abe <tabe@miraclelinux.com> wrote:
> > 
> >> Hello,
> >>
> >> I have two questions WRT interoperability test for host category of phase2-core.
> >>
> >> One is whether the test environment is acceptable or not.
> >> My environment is as follows.
> >> LOGO:
> >>   Our product, which is Linux box.
> >> REF-1:
> >>   FreeBSD 6.0-RELEASE-p7
> >> REF-2:
> >>   FreeBSD 6.0-RELEASE-p7
> >> TAR-Host1:
> >>   FreeBSD 6.0-RELEASE-p7
> >> TAR-Host2:
> >>   USAGI(usagi-linux26-stable-20050714.tar.bz2) on Debian3.1r8
> >> TAR-Router1:
> >>   NetBSD 2.0.2
> >> TAR-Router2:
> >>   KAME(kame-20080601-netbsd20-snap.tgz) on NetBSD 2.0.2
> >>
> >>
> >> Another one is related to IP6Interop.1.6(spec version is 2.8.4), which is
> >> Path MTU Discovery and Fragmentation test.
> >> This kind of question might be inappropriate here, but I'd like to know
> >> if anyone had seen the same problem before or has a workaround.
> >>
> >> interop.1.6.x requires TAR/REF box to send fragmented ICMPv6 ECHO packets
> >> to LOGO. However, all BSDs listed above conditionally fail to send out only
> >> the 1st fragmented packet.
> >> Usually they successfully send the fragmented pings. But they fail in case that
> >> no NCE for ping destination exist. When there isn't NCE for destination, BSD box
> >> initiates ND to figure out who is the destination. After it's completed, only 
> >> the 1st fragmented packet appears to be dropped on BSD box.
> >> I'm wondering why, and worrying that if this will be a serious problem for 
> >> getting Logo application.
> >>
> >>
> >> Thank you,
> >> -toyo
> >>
> >>
> > 
> > 
> 
> 
> 


-- 
Yukiyo Akisada <akisada@tahi.org>