Date: Wed, 08 Jul 2015 20:38:14 +0200 From: Matthias Fechner <idefix@fechner.net> To: freebsd-questions@freebsd.org Subject: IPv6 prefix delegation over a freebsd router that sits between internet router and local network Message-ID: <559D6E16.3020305@fechner.net>
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Dear all, I have a problem with IPv6 configuration and I'm not sure if it is even possible. I'm using an internet connection from mnet (a German internet provider). The fritzbox 7490 will get an /56 IPv6 prefix that changes every 24 hours. Behind the fritzbox I have a FreeBSD router with two network interfaces. Internet | Fritzbox 7490 internet interface Fritzbox 7490 local interface | Freebsd interface re0 Freebsd interface em0 | Internal lan The network interface in the fritzbox is configured to forward the prefix. If I check the interfaces the re0 (interface to fritzbox) is getting an ipv6 address and I can ping6 from the freebsd machine without problems. But if I try to to ping from a computer in "Internal lan" it fails. The internal pc resolves the hostname to ipv6 adress but the freebsd machine shows in /var/log/messages: Jul 8 20:33:01 server kernel: cannot forward src fe80:1::88d:dbdc:2c49:ac3a, dst <target-ipv6-address-i-ping>, nxt 58, rcvif em0, outif re0 So I think I have to forward the delegated prefix to the internal network. Could maybe anyone point me into the right direction what I have to configure/read to continue with the setup? Thanks Matthias -- "Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the universe trying to produce bigger and better idiots. So far, the universe is winning." -- Rich Cook
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