From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from tuna.sandelman.ca (tuna.sandelman.ca [IPv6:2607:f0b0:f:3::184]) by huchra.bufferbloat.net (Postfix) with ESMTP id 2F1F021F19A for ; Wed, 12 Jun 2013 10:15:47 -0700 (PDT) Received: from sandelman.ca (obiwan.sandelman.ca [IPv6:2607:f0b0:f:2::247]) by tuna.sandelman.ca (Postfix) with ESMTP id 3C73120191 for ; Wed, 12 Jun 2013 13:29:05 -0400 (EDT) Received: by sandelman.ca (Postfix, from userid 179) id BD20363A8C; Wed, 12 Jun 2013 13:14:50 -0400 (EDT) Received: from sandelman.ca (localhost [127.0.0.1]) by sandelman.ca (Postfix) with ESMTP id AD5C0639DF for ; Wed, 12 Jun 2013 13:14:50 -0400 (EDT) From: Michael Richardson To: cerowrt-devel X-Mailer: MH-E 8.3; nmh 1.3-dev; XEmacs 21.4 (patch 22) X-Face: $\n1pF)h^`}$H>Hk{L"x@)JS7<%Az}5RyS@k9X%29-lHB$Ti.V>2bi.~ehC0; <'$9xN5Ub# z!G,p`nR&p7Fz@^UXIn156S8.~^@MJ*mMsD7=QFeq%AL4m Sender: mcr@sandelman.ca Subject: [Cerowrt-devel] frequency of RAs from 6relayd X-BeenThere: cerowrt-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: Development issues regarding the cerowrt test router project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 12 Jun 2013 17:15:47 -0000 I am seeing a problem where the IPv6 default on a number of systems that use RA to get it is going away on a regular basis. CeroWrt 3.8 is the source of RA and IPv6 default routes everywhere. A /48 is delegated (manually) from my ISP, and configured for each subnet. There is no way that I can see to specify or find out what the lifetime / frequency of the RAs are in the UI. In /etc/config/6relayd, I see: config server 'default' option rd 'server' option compat_ula '1' option always_assume_default '1' option fallback_relay 'ndp' list network 'VoIP' list network 'gw00' list network 'gw01' list network 'gw10' list network 'gw11' list network 'se00' list network 'services' list network 'sw00' list network 'sw10' list network 'trusted' It is my understanding that 6relayd is responsible for sending out RAs. On my desktop: obiwan-[~] mcr 10187 %sudo rdisc6 eth0 Soliciting ff02::2 (ff02::2) on eth0... Hop limit : undefined ( 0x00) Stateful address conf. : Yes Stateful other conf. : Yes Router preference : medium Router lifetime : 1800 (0x00000708) seconds Reachable time : unspecified (0x00000000) Retransmit time : unspecified (0x00000000) Source link-layer address: 76:44:01:76:5D:CC MTU : 1500 bytes (valid) from fe80::7444:1ff:fe76:5dcc (5dcc is indeed my CeroWRT) while the router lifetime given is 30 minutes, I am wondering if something else is up. I would have thought I'd see a prefix advertised here. As my MP3 streamer one of the machines affected, when it loses it's IP, it either falls off of NFS or the TCP stream breaks, and things go quiet. I've ssh'ed into my MP3 server (over v4), and I'm running: watch ip -6 route ls and sudo tcpdump -i eth0 -n -p ip6 and icmp6 in two windows. -- ] Never tell me the odds! | ipv6 mesh networks [ ] Michael Richardson, Sandelman Software Works | network architect [ ] mcr@sandelman.ca http://www.sandelman.ca/ | ruby on rails [