In a single DMVPN cloud topology, there are two headend routers on the same DMVPN subnet. Therefore, the branch router requires an mGRE interface. Because of this mGRE interface, branch routers attempt inter-branch communications if so directed by the routing table. As a result, this model should be considered a spoke-to-spoke topology. The hub-and-spoke deployment model can be configured in a single DMVPN cloud topology with only one headend router. This scenario is not tested or recommended because there is no failover mechanism for the headend router.
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We have configured the outside and inside Interface with official ipv6 adresses, set a default route on outside Interface to our router, we also have definied a rule , which also gets hits, to permit tcp from inside Interface to any6.
In Syslog I also se...