6RD on DD-WRT-based Home Router 陳鈺萍 陳伯岡 1

Introduction IPv6 Rapid Deployment A improvement of 6to4 RFC 5569 2

6to4 架構 2002:83F3:812C:1::3 6to4 Router1 6to4 Relay Router IPv4 192.88.99.1 2002::/16 IPv4 6to4 Relay Router The example shows one of the many possible 6to4 tunnel scenarios. It shows Cisco routers connecting IPv6 domains using the 6to4 mechanism. Router1 has the IPv4 address 192.168.99.1. From this IPv4 address, the site 6to4 prefix used for the internal IPv6 network is 2002:c0a8:6301::/48, which can be used subnetted in a site with many subnetworks. The router interface is configured on subnet 1 (SLA = 0x0001) so the interface is assigned the IPv6 address 2002:c0a8:6301:1::/64 with the EUI-64 interface ID. The router 6to4 tunnel interface tunnel0 has no IPv4 or IPv6 address specifically configured for it. It uses the Loopback0 IPv4 address, as the source address for the tunnel. The destination address is unspecified since it is constructed automatically. As packets are forwarded from its internal network to the 6to4 cloud, the router generates a new tunnel with the IPv4 destination used from the IPv4 address embedded inside the IPv6 address of the IPv6 packet being forwarded. The command tunnel mode ipv6ip 6to4 identifies a 6to4 tunnel. Depending on the routing domain and topology, route entries should be added. Except in special cases, the routing entry shown is generally needed to forward all 2002: packets through tunnel0. Router2 has a similar configuration for its end. 2002::/16 IPv6 Network 192.88.99.1 Reference : Internet Protocol Version 6, Spring 2011, Dr. Quincy Wu 3

6RD 架構 IPv4 AND IPv6 customer site Comcast 6RD Border Relays 6rd relays (modified 6 to 4) ASUS RT-N16 Home Router 6rd CPEs (modified 6 to 4) GLOBAL IPv6 INTERNET ISP IPV4 INFRASTRUCTURE IPv4 anycast address => of 6rd relays IPv6 Prefix <= of 6rd relays of ISP IPv4 addresses <= of customer sites Reference RFC 5969 4

改進 IPv6 prefix : 6to4 : 2002:: 6RD : 依照ISP的prefix

實驗環境 PC switch 更改韌體 韌體新設定 ISP prefix IPv4 addr (router) Subnet ID Interface ID 2001:55c: eui-64 address Internet 6

實驗步驟 更新router韌體 開啟6RD設定 SOP dd-wrt.v24-14896_NEWD-2_K2.6_voip.bin Enable IPv6 Enable radvd SOP

Demonstration

Reference RFC 5569 RFC 5969 http://www.dd-wrt.com/wiki/index.php/IPv6 http://www.dd-wrt.com/site/support/router-database http://5i01.com/topicdetail.php?f=110&t=1370458 http://www.comcast6.net/6rd-config.php http://course.ipv6.club.tw/IPv6.992/lab-6to4-v1.ppt