300-410 Exam Dumps | A customer is running an mGRE DMVPN tunnel over WAN infrastructure between hub and spoke sites. The existing

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Question 108/301

A customer is running an mGRE DMVPN tunnel over WAN infrastructure between hub and spoke sites. The existing configuration allows NHRP to add spoke routers automatically to the multicast NHRP mappings. The customer is migrating the network from IPv4 to the IPv6 addressing scheme for those spokes' routers that support IPv6 and can run DMVPN tunnel over the IPv6 network.
Which configuration must be applied to support IPv4 and IPv6 DMVPN tunnels on spoke routers?

A. tunnel mode ipv6ip 6to4

B. tunnel mode ipv6ip auto-tunnel

C. tunnel mode ipv6ip 6rd

D. tunnel mode ipv6ip isatap

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