Are there any other technologies like Cisco DMVPN that use dynamic tunneling in layer 3 networks?
closed as not a real question by Michael Hampton♦, Mike Pennington, voretaq7♦ Aug 7 '12 at 1:52
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As hand made solution is possible to register all nodes on dynamic dns, maybe private. and ask dns for IP of other peer to connect.
Central point can be redundant, with replicated DDNS.
This solution can bbe dveloped as deep as necessary.