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Unmanaged Networks, tunnels, etc.

Unmanaged Networks, tunnels, etc. C. Huitema, T. Chown, J. Palet, S. Satapati, R. van der Pol. Issue: automatic vs. configured. Automatic tunnels allow for automatic deployment, which “applications” like

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Unmanaged Networks, tunnels, etc.

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  1. Unmanaged Networks, tunnels, etc. C. Huitema, T. Chown, J. Palet, S. Satapati, R. van der Pol

  2. Issue: automatic vs. configured • Automatic tunnels allow for automatic deployment, which “applications” like • But automatic solutions tend to work better between users of same technology, require relays towards “native IPv6” or other technologies • Configured or brokered tunnels allow for more controlled service, often better quality • But the economics of providing tunnel services mostly make sense if provided within a single ISP • And it is not automatic…

  3. Tunnel configuration needs work • Current “tunnel broker” RFC is “conceptual” in nature • Need to nail at least one scenario • Tunnel broker is provided by the ISP • ISP customer easily gets the parameters • Tunneling mechanism works through NAT

  4. Native to Teredo requires relays Issue No Teredo relays in the network Every native host has to implement a Teredo Relay This creates a “lock-in” Solution Implement Teredo relays in the network and run them until Teredo is retired? Issue: Teredo relays Native Host Server First Bubble Relay All the traffic… Teredo Host

  5. Do we have some consensus? • Tentative algorithm • If native connectivity, use it • If tunnel service is available, use it • If 6to4 is available, use it • If everything else fails, use Teredo • OK, some [including Pekka] would rather never see people using Teredo or 6to4… • But then, they should provide native or tunnel service!

  6. Incentives to “move forward” • Stable addresses • Native and tunnel solutions provide stable addresses, adequate for entry in DNS, usage in web servers, etc. • Better performance • Native IPv6 has lower overhead, does not involve relays, etc. • Multicast • Neither 6to4 nor Teredo support multicast, configured tunnels could, native should.

  7. Next steps • Update the “unmaneval-00” draft • Incorporate the “tunnel consideration” text • Revise the existing text to reflect the consensus • Move all tunnel comparisons to the tunnel consideration section • Recommend work on Configured and Opportunistic Tunnels over IP and UDP • Example of opportunistic over IP: 6to4, • Example of opportunistic over UDP: Teredo

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