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Contiki 2.6: IPv6 For Everything, Everywhere

Posted by Soulskill on from the your-footstool-is-broadcasting-an-IP-address dept.

An anonymous reader writes "The Contiki project just released version 2.6 of its open source operating system for the Internet of Things, used to track city sound pollution, control street lights, read power meters, monitor radiation, among other things. The technology behind it? A really tiny IPv6 stack that fits in a few kilobytes of memory, allowing everything, everywhere to have an IPv6 address."

3 of 62 comments (clear)

  1. Re:Broadcast and IPv6 by Anonymous Coward · · Score: 2, Informative

    IPv6 doesn't support broadcast?

    Err...


    ping6 -I wlan0 ff02::1

    There are alots of "All nodes" IPv6 broadcast addresses.

  2. Re:Broadcast and IPv6 by unixisc · · Score: 5, Informative

    IPv6 doesn't support broadcast. However, a multicast to address ff02::1 would result in a transmission to all nodes within the same local link, resulting in effectively the same thing (In fact, that's how router discovery happens in IPv6). Similarly, one could do a multicast to ff05::1 to reach all nodes in an organization, In other words, there are a lot more scopes in IPv6 that one can address.

  3. Re:Great! Now just solve the routing problem! by unixisc · · Score: 4, Informative

    Precisely - just do a multicast transmission to address ff02::fb to get to all DNS servers on the local link, or to ff02::1:3 for all DHCP6 servers on the local link. In fact, that's how router advertizements would work.