Which two technologies can encapsulate an IPv6 payload in an IPv4 packet for transmission across a network? (Choose two)
A. L2TPv3
B. trunking
C. AToM
D. ISATAP
E. NAT-PT
Which two technologies can encapsulate an IPv6 payload in an IPv4 packet for transmission across a network?
Guess it’s AD
Unlike the above discussed tunneling methods, a translation method provides a way to translate IPv6 to IPv4 traffic and vice versa. When using translation, the traffic is not encapsulated but is converted to the destination type (be that IPv4 or IPv6). There are two methods that are typically used with translated IPv6 networks; these include:
Network Address Translation—Protocol Translation (NAT-PT) – The NAT-PT method enables the ability to either statically or dynamically configure a translation of a IPv4 network address into an IPv6 network address and vice versa. For those familiar with more typically NAT implementations, the operation is very similar but includes a protocol translation function. NAT-PT also ties in an Application Layer Gateway (ALG) functionality that converts Domain Name System (DNS) mappings between protocols.
AD
https://www.accyotta.com/assets/uploads/docs/l2tpv3_ethernet_pseudowire_feature_config_guide_rev_b.pdf
L2TPv3 can also be used to transport IPv6 traffic over an IPv4 network.
AD
DE
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/interface/configuration/xe-3s/ir-xe-3s-book/ip6-isatap-xe.html
Overlay Tunnels for IPv6
Overlay tunneling encapsulates IPv6 packets in IPv4 packets for delivery across an IPv4 infrastructure (a core network or the figure below).
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_nat/configuration/15-mt/nat-15-mt-book/ip6-natpt.html
Network Address Translation (NAT)-Port Translation (PT) for Cisco software based on RFC 2766 and RFC 2765 is a migration tool that helps customers transition their IPv4 networks to IPv6 networks.