This document summarizes lessons learned about deploying Dual-Stack Lite (DS-Lite) and supporting customer premises equipment (CPEs) on an IPv6 network. It discusses that DS-Lite works well for DHCPv6/prefix delegation and router advertisement functions with various CPE models tested. However, custom configuration may be needed for IPv6 routing, filtering, and setting the Address Family Translation Router address. The document also reviews DS-Lite deployments by other Internet service providers and compatible CPE models from several vendors.

1. 1
Deployment with Dual-Stack Lite (DS-Lite)
and lesson learned about CPEs
on IPv6 network
Takeshi MOTOHASHI
Internet Multifeed Co.
motohashi@mfeed.ad.jp
March 2015 at APRICOT-APAN2015

2. 2
The Services of Internet Multifeed

3. • IPv6 IPoE (IP over Ethernet) on NTT East & West
Flet‘s Hikari Next
• VNE (Virtual Network Enabler)
• IPv4 over IPv6 service started since October 2014
3
transix
IPv6 Internet
IPv4 Internet
B4(CPE)
AFTR
B4 (Basic Bridging BroadBand) AFTR (Address Family Translation Router)

4. 4
Dual-Stack Lite (DS-Lite)
IPv6 Network (Encapsulation)
EndUser B4 AFTR IPv4 Internet
NAPT
RFC 6333, "Dual-Stack Lite Broadband Deployments Following IPv4 Exhaustion"
NAPT （Network Address Port Translation)
B4 (Basic Bridging BroadBand) AFTR (Address Family Translation Router)
• The IPv4 over IPv6 service is based on DS-Lite
• AFTR is ready on transix network
• End users (or ISPs) need to prepare B4 CPE for
using DS-Lite

5. 5
Requirement for CPEs
• We need to take care of both:
• DHCPv6/PD (Prefix Delegation)
• RA (Router Advertisement)
• How CPEs in Japan work with IPv6 and DS-Lite?
• Buffalo WXR-1900DHP
• IIJ SEIL
• Huawei WS325
• YAMAHA NVR500
• Cisco 1812J
* Based on investigation as of February 2015

6. 6
Lesson Learned
• For DHCPv6/PD (Prefix Delegation)
• IPv6 and DS-Lite: both work well with the CPEs
• For RA (Router Advertisement)
• DS-Lite works well with the CPEs
• Variety of configuration for IPv6
• IPv6 path through / ND proxy
• Custom configuration necessary for filtering
• AFTR address setting: Hostname / IP address

7. 7
Research on DS-Lite deployment
• ISPs with DS-Lite
• Greece: Forthnet (2014/6)
• Poland: Orange Polska (2015/1)
• Germany
• CPEs with DS-Lite
• D-Link, Huawei, TP-Link, Sitecom, AVM, NEC
• OpenWrt
* All information based on Web news and manuals online
We are happy to share and exchange information
for deployment with DS-Lite

8. Deployment with Dual-Stack Lite (DS-Lite)
and lesson learned about CPEs
on IPv6 network
Takeshi MOTOHASHI
Internet Multifeed Co.
motohashi@mfeed.ad.jp
March 2015 at APRICOT-APAN2015