From owner-freebsd-net Sat Sep 29 1:35:52 2001 Delivered-To: freebsd-net@freebsd.org Received: from shuttle.wide.toshiba.co.jp (shuttle.wide.toshiba.co.jp [202.249.10.124]) by hub.freebsd.org (Postfix) with ESMTP id 86C5037B408 for ; Sat, 29 Sep 2001 01:35:48 -0700 (PDT) Received: from localhost ([3ffe:501:100f:10c1:200:39ff:fe97:3f1e]) by shuttle.wide.toshiba.co.jp (8.9.1+3.1W/8.9.1) with ESMTP id RAA19566 for ; Sat, 29 Sep 2001 17:37:02 +0900 (JST) Date: Sat, 29 Sep 2001 17:35:35 +0900 Message-ID: From: JINMEI Tatuya / =?ISO-2022-JP?B?GyRCP0BMQEMjOkgbKEI=?= To: freebsd-net@FreeBSD.ORG Subject: Re: Ipv6 In-Reply-To: References: <86zo7h2cz1.wl@keiichi01.osaka.iij.ad.jp> User-Agent: Wanderlust/2.6.0 (Twist And Shout-pre) Emacs/21.0 Mule/5.0 (SAKAKI) Organization: Research & Development Center, Toshiba Corp., Kawasaki, Japan. MIME-Version: 1.0 (generated by SEMI 1.13.7 - "Awazu") Content-Type: text/plain; charset=US-ASCII X-Dispatcher: imput version 980905(IM100) Lines: 44 Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org >>>>> On Fri, 28 Sep 2001 08:59:32 -0400, >>>>> "Alex Feldman" said: >> Currently the DNS system requires IPv4 transport. If you disable IPv4 >> completely, you cannot resolve any hostnames. In this case, you must >> set up DNS proxy (ex. totd) from IPv6 to IPv4. Is this your case, >> isn't it? A "DNS proxy" like totd is not related to the issue of DNS transport. Also, "the DNS system requires IPv4 transport" is not necessarily true. We should say that - If you rely on a DNS (cache) server that does not support IPv6 transport, you cannot resolve the IP(v6) address from a host name. In this case, you'll need to turn IPv4 on in your system, or to make the DNS server support IPv6 transport. - Even if there is no problem on name resolution, you cannot communicate with IPv4-only nodes. If you want to do this, you'll need some translation service from IPv6 to IPv4. Such translation service may comprise a "DNS proxy" and an actual translation box. Anyway, > Not, because I connected two machine back to back. > Btw, when I set ipv6_forwarding to 1, I was able to ping6. > But more interesting, when I next time boot this machine (ipv6_forwarding > set to 0 by default), I was still able to ping6. > So, what is happened? Just saying "(not) able to ping6" is not very informative. Be more specific, please. At least you should tell us - the OS name (probably FreeBSD) and its version of each node - (if the node is FreeBSD) the result of + ifconfig -a + netstat -rn + the exact output of the "ping6 execution" (do not describe the situation, just copy and paste the output) JINMEI, Tatuya Communication Platform Lab. Corporate R&D Center, Toshiba Corp. jinmei@isl.rdc.toshiba.co.jp To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message