Egress Points
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Egress Points. ISP SP Network. Ingress Point. Protocol-Specific Egress Decision. Transit Header. IP Header. IP Header. IP Header. Payload. Payload. Payload. 6RD Border Relay. ISP IPv4 SP Network. IPv6 Transit. 6RD CPE. IPv6 Local Network. IPv4 Header. IPv6 Header. IPv6 Header.

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ISP SP Network

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Isp sp network

Egress Points

ISP SP Network

Ingress

Point

Protocol-Specific

Egress Decision

Transit Header

IP Header

IP Header

IP Header

Payload

Payload

Payload


Isp sp network

6RD Border Relay

ISP IPv4 SP Network

IPv6 Transit

6RD CPE

IPv6 Local Network

IPv4 Header

IPv6 Header

IPv6 Header

IPv6 Header

Payload

Payload

Payload


Isp sp network

MPLS V6PE

ISP MPLS SP Network

IPv6 Transit

MPLS V6PE

IPv6 Local Network

MPLS Header

IPv6 Header

IPv6 Header

IPv6 Header

Payload

Payload

Payload


Isp sp network

CGN NAT

ISP IPv4 Network

(Private Address)

IPv4 Transit

CPE NAT

IPv4 Local Network

(Private Address)

IPv4 Header

IPv4 Header

IPv4 Header

Payload

Payload

Payload


Isp sp network

A+P Gateway

ISP IPv4 Network

IPv4 Transit

Ports: 0-16383

A+P CPE NAT

IPv4 Local Network

(Private Address)

Ports: 16384-32767

Ports: 49152-65535

Ports: 32768-49151

IPv4 Header

IPv4 Header

IPv4 Header

Payload

Payload

Payload


Isp sp network

D-S Lite CGN

ISP IPv6 Network

IPv4 Transit

D-S Lite CPE

IPv4 Local Network

(Private Address)

IPv6 Header

IPv4 Header

IPv4 Header

IPv4 Header

Payload

Payload

Payload


Isp sp network

DNS64

NAT64

ISP IPv6 Network

V6-only

host

IPv4 Transit

IPv4 Header

IPv6 Header

IPv6 Header

Payload

Payload

Payload


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