From owner-freebsd-net Sun Jul 23 19: 4:52 2000 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 ABE0137B5A8 for ; Sun, 23 Jul 2000 19:04:48 -0700 (PDT) (envelope-from jinmei@isl.rdc.toshiba.co.jp) Received: from localhost ([3ffe:501:100f:10c1:250:4ff:fefe:d85f]) by shuttle.wide.toshiba.co.jp (8.9.1+3.1W/8.9.1) with ESMTP id KAA16571; Mon, 24 Jul 2000 10:49:52 +0900 (JST) Date: Mon, 24 Jul 2000 11:00:01 +0900 Message-ID: From: JINMEI Tatuya / =?ISO-2022-JP?B?GyRCP0BMQEMjOkgbKEI=?= To: zaks@prioris.mini.pw.edu.pl Cc: freebsd-net@FreeBSD.ORG Subject: Re: "nd6_lookup: failed" after upgrade to 4.1-RC In-Reply-To: In your message of "Fri, 21 Jul 2000 19:27:14 +0200" <20000721192714.A75927@prioris.mini.pw.edu.pl> References: <20000721192714.A75927@prioris.mini.pw.edu.pl> User-Agent: Wanderlust/2.3.0 (Roam) Emacs/20.6 Mule/4.0 (HANANOEN) 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: 43 Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org >>>>> On Fri, 21 Jul 2000 19:27:14 +0200, >>>>> Slawek Zak said: > I have a tunnel v6 over v4. When I try to connect any host using ipv6 > I a flooded with messages saying: > pf39 nd6_lookup: failed to add route for a \ > neighbor(3ffe:8010:0007:0002::0001), errno=17 > When I manualy delete the route to 3ffe:8010:0007:0002::0001 I get: > pf39 nd6_lookup: failed to lookup \ > 3ffe:8010:0007:0002::0001 (if = gif0) > In both cases I can communicate just fine, only the syslog hurts. Please set 128 to the prefix length for a pair of source and destination address on a p2p interface. If not, the kernel will regard the peer as a neighbor and try to check reachability using IPv6 neighbor unreachability detection mechanism, which causes the above warning. So, > ## IPv6 > ifconfig_gif0="inet6 3ffe:8010:7:2::2 3ffe:8010:7:2::1 prefixlen 126" should be ifconfig_gif0="inet6 3ffe:8010:7:2::2 3ffe:8010:7:2::1 prefixlen 128" By the way, > ipv6_route_gif0="default 3ffe:8010:7:2::1" does this mean that the default route is the global address? I recommend you not to use a global address as a gateway in the routing table, since a global gateway annoys routing protocols in some cases (e.g. PIM for IPv6 does not work with a global gateway). 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