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Teredo for MacOS X – IPv6 in 2 Minuten

IPv6 in zwei Minuten … auf die Plätzefertiglos!

Schritt 1: Download von teredo für OSX
Schritt 2: Installation des Pakets
Schritt 3: IPv6 genießen

Ok – etwas ausführlicher:

Teredo is a tunneling protocol designed to grant IPv6 connectivity to nodes that are located behind IPv6-unaware NAT devices. It defines a way of encapsulating IPv6 packets within IPv4 UDP datagrams that can be routed through NAT devices and on the IPv4 internet.

[Quelle: wikipedia]

Miredo is an open-source Teredo IPv6 tunneling software, for Linux and the BSD operating systems. It includes functional implementations of all components of the Teredo specification (client, relay and server). It is meant to provide IPv6 connectivity even from behind NAT devices.

[Quelle: miredo]

Miredo is an open-source (GPL) user-space teredo implementation for linux and BSD. Someone went thru the effort to get miredo to work on MacOS X, but setting it up is not something your average joe can accomplish. What is needed is an installer package.

[Quelle: miredo für OSX]

Die Konfiguration ist denkbar simpel – unter den System Preferences erscheint ein weiterer Menüpunkt, dem man aber in der Grund-Konfiguration keine Beachtung schenken muß. IPv6 ist direkt verfügbar.

picture-1

Das reelle Interface wird dabei gar nicht angefasst.

% ifconfig en1
en1: flags=8863 mtu 1500
	inet6 fe80::987:6cff:ffff:ghij%en1 prefixlen 64 scopeid 0x5
	inet 172.XX.YY.ZZZ netmask 0xffffff00 broadcast 172.XX.YY.255
	ether 00:23:de:ad:be:ef
	media: autoselect status: active
	supported media: autoselect

Stattdessen wird ein tun-Interface konfiguriert.

% ifconfig tun0
tun0: flags=88d1 mtu 1280
	inet6 fe80::xxx:dfff:dddd:eeee%tun0 prefixlen 64 scopeid 0x8
	inet6 fe80::ffff:ffff:ffff%tun0 prefixlen 64 scopeid 0x8
	inet6 2001::53aa:ffff:0:eeee:g:87e1 prefixlen 32
	open (pid 89724)

Danke an Michael für den Fingerzeig!

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