Date: Wed, 4 Jan 2012 12:42:48 +0000 From: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> To: Sami Halabi <sodynet1@gmail.com> Cc: freebsd-net@freebsd.org Subject: Re: kernel: nd6_setmtu0: new link MTU on ng29 (1218) is too small for IPv6 Message-ID: <677F88A9-D07A-4FDA-A324-9167B88D9040@lists.zabbadoz.net> In-Reply-To: <CAEW%2BogZyXc9sZDk3OxqwaCmie0DQFnciBCP0RjNOcv9qytsX-g@mail.gmail.com> References: <CAEW%2BogbY_ARtc4mVDQHpYPKgaLWHj64EhmFrQDNXuMcbn5Kz8Q@mail.gmail.com> <20120104120150.GG34721@FreeBSD.org> <CAEW%2BogZyXc9sZDk3OxqwaCmie0DQFnciBCP0RjNOcv9qytsX-g@mail.gmail.com>
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On 4. Jan 2012, at 12:11 , Sami Halabi wrote: > Hi, > i just tested the last log: > %tail /var/log/messages > Jan 3 23:21:50 mpd2 kernel: nd6_setmtu0: new link MTU on ng92 (1218) is > too small for IPv6 > Jan 4 00:00:36 mpd2 kernel: nd6_setmtu0: new link MTU on ng105 (1218) is > too small for IPv6 > Jan 4 00:34:48 mpd2 kernel: nd6_setmtu0: new link MTU on ng105 (1218) is > too small for IPv6 > Jan 4 07:47:37 mpd2 kernel: nd6_setmtu0: new link MTU on ng100 (1218) is > too small for IPv6 > Jan 4 08:31:55 mpd2 kernel: nd6_setmtu0: new link MTU on ng116 (1218) is > too small for IPv6 > Jan 4 09:16:21 mpd2 kernel: nd6_setmtu0: new link MTU on ng123 (1218) is > too small for IPv6 > Jan 4 12:55:32 mpd2 kernel: nd6_setmtu0: new link MTU on ng53 (1218) is > too small for IPv6 > Jan 4 14:17:34 mpd2 kernel: nd6_setmtu0: new link MTU on ng120 (1218) is > too small for IPv6 > %ifconfig ng120 > ng120: flags=88d1<UP,POINTOPOINT,RUNNING,NOARP,SIMPLEX,MULTICAST> metric 0 > mtu 1218 > inet 188.64.96.5 --> 188.64.102.171 netmask 0xffffffff > > so MTU is indeed 1218 But that MTU should be a result of ppp/LCP negotiations of individual sessions. It seems you have peers thinking they want a really small MTU and you allow it? /bz -- Bjoern A. Zeeb You have to have visions! It does not matter how good you are. It matters what good you do!home | help
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