31 Jan 2011 mjw   » (Master)

Who knew IPv6 would be this easy?

Obvious, with only hours till we run out of ipv4 addresses, I am a little late to the party, but it was ridiculously easy to get an IPv6 tunnel going so that I will be able to happily connect to all those new IPv6-only hosts in the future. It literally took just 5 minutes.

  • On Fedora make sure you also run the network scripts on startup (it seems to default to NetworkManager only these days): chkconfig networking on.
  • Look up your ISP IPv6 tunnel setup procedure (or if they aren’t yet, look for a public one like Sixxs, Freenet6 or Hurricane Electric).
  • Punch in the ipv4 tunnel address and the ipv6 addresses provided into /etc/sysconfig/network-scripts/ifcfg-sit1.
  • Add NETWORKING_IPV6=yes and IPV6_DEFAULTDEV=sit1 to /etc/sysconfig/network.
  • Restart networking: sudo service networking restart.
  • Done! You can now happily explore the IPv6 space: traceroute6 fedoraproject.org. And check http://test-ipv6.com/ to see your are ready for World IPv6 day.

Example /etc/sysconfig/network-scripts/ifcfg-sit1 file:


Apparently things are even easier with 6to4 if you have a direct IPv4 address, but the above works even behind a NAT. The above doesn’t use all the fancy IPv6 features yet like providing automatic configuration for all your devices in your network. Such a tunnel will automagically provide you with at least 2^64 IPv6 addresses, and most likely you get a whole IPv6 /48 network meaning you will be getting 2^16 * 2^64 addresses (yes, that is more addresses than there are currently IPv4 addresses in the world!). But it is a nice start to make sure the future transition will be smooth.

See also /usr/share/doc/initscripts-*/ipv6-tunnel.howto and/or /usr/share/doc/initscripts-*/ipv6-6to4.howto for more information, including setting up all the fancy routing stuff on your local network if you want.

Syndicated 2011-01-31 09:48:13 from Mark J. Wielaard

Latest blog entries     Older blog entries

New Advogato Features

New HTML Parser: The long-awaited libxml2 based HTML parser code is live. It needs further work but already handles most markup better than the original parser.

Keep up with the latest Advogato features by reading the Advogato status blog.

If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!