Tried to Provide IPv6 Only Network Stealthily at CEDEC 2015
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Transcript of Tried to Provide IPv6 Only Network Stealthily at CEDEC 2015
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Tried to ProvideIPv6 Only Network
Stealthilyat CEDEC 2015
Yuya Kawakami (@yuyarin)CEDEC-Net 2015 NOC
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CEDEC
• Largest conference in Japan for computer entertainment developers
• 3 days at Pacifico Yokohama• 6,373 attendees in 2015
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CEDEC-Net
★ Connectable Wi-Fi network★ Don't afraid failure, Have a sense of fun★ Exchange between engineers in network
industry and game industry
praying NOC members
Wi-Fi Network for CEDEC by volunteers
Equipment provided by sponsors
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# of Wi-Fi Stations
Max: 1713 stations
by Cisco Prime Infrastructure
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Wi-Fi Users Attribute
Mobiledevicesaremajority(visual)65%Appledevices(MACaddress)
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At such a conference
IPv6 Onlyby default
tried
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Announcement of Wi-Fi
* dual-stack network(cedec-net4) is also prepared
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Why great?
IPv6 onlyfor non-experts
stealthilyby default
provided a network with
maybe world first ?
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Why did it?
WWDC 2015 - Your App and Next Generation Networkshttps://developer.apple.com/videos/play/wwdc2015-719/
iOS App Store requires"work with NAT64+DNS64"
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CEDEC-Net 2015 External
FLET'S Hikari Next(IPv6 Access NW)
cedec-net4(IPv4+IPv6)
cedec-net(IPv6)
(IPv6 ISP NW)
IPv6Internet
IPv4Internet
IPv6 IPoEIPv6 traffic go throught to the IPv6 Intnernet
NAT64+DNS64translate IPv6 packets to IPv4 packets for IPv4 only applications
DS-Liteencapsulate IPv4 packets in IPv6 and translate IPv4 private addresses to global addresses in ISP equipment
IPv6 Only!!
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CEDEC-Net 2015 Overview
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Devices work with IPv6 OnlyDevices perfectly worked
Devices connected to Wi-Fi but couldn'tbecome "connected to the Internet"
– Mac & iPhone (65% share)
– Android → no support of DHCPv6→ RDNSS should have been provided
– PS Vita– Nintendo 3DS
https://en.wikipedia.org/wiki/Comparison_of_IPv6_support_in_operating_systems
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Impact on Game Industry• Announced "Wi-Fi network can be used as a
testbed for the future requirement of iOS App submission" to them
• They noticed "Apps which cannot work with this Wi-Fi will be rejected" and started to verify their apps
• Article on CEDEC-Net was published on GAME Watch and ranked 2th on a list of popular articles
• We were asked to teach a procedure for building NAT64+DNS64 environment
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IPv6 Traffic
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avg. 25% is IPv6 traffic
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Devices in each network
IPv6 Only: RedDual-stack: Blue
almost same as share of Apple devicesIf RDNSS is enabled, Android devices can be added
approx. 65% Devicesworks with IPv6 Only
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DNS Query Stat12M DNS queries counted by service providorTop 10 providers account for 75%* inc. 18K queries of ipv4only.arpa, Android uses for detect DNS64
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DS-Lite Port Exhaustion used 1 IPv6 address (64512 ports) up
It was likely that there are devices who could not communicate.1400 devices are connected at that time.* differ from usage or implementation of CGN function* specially configured CGN available with 64512 port
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CGN Port can be exhausted: NAT is not a permanent solution for IPv4 exhaustion
Apprx. 25% traffic can be released to IPv6 if Mobile carriers deploy IPv6
It is important to try to make relationship with non-Interet industries to promote IPv6
Lesson Learned
Content providers can decrease the risk of discommunication if deploy IPv6
can save 25% CGN ports
but prepare for supporting them!!
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iOS9.2 Release
https://developer.apple.com/library/ios/releasenotes/General/RN-iOSSDK-9.2/
The ability to synthesize NAT64 IPv6 addresses from IPv4 literals was added to getaddrinfo
NAT64+DNS64 issueApplications which need to use IPv4 address literal like P2P application cannot work
Change in iOS9.2
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For What is it Useful?3 Mobile Careers in Japan"Approach to Promote IPv6 in Mobile Network"
http://www.soumu.go.jp/main_content/000385655.pdf
Amount of traffic which can be move to IPv6 and a number of IPv4 address which can be saved can be calculated by data from CEDEC-Net 2015
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Related Documents• 『繋がりにくい原因』を探れ! 〜CEDEC-Netテクニカルレビュー
2015〜– https://cedil.cesa.or.jp/cedil_sessions/view/1323– https://www.slideshare.net/yuyarin/cedecnet-2015
• Twitter @cedecnet のふぁぼ: 会場内外からの声– https://twitter.com/cedecnet/favorites
• CEDEC-Net 2015 で IPv6 の会場ネットワークを提供してきました– http://yuyarin.hatenablog.com/entry/2015/08/31/011205
• 「CEDEC-Net 2015」がiOSアプリ開発者に警鐘を鳴らす!– http://game.watch.impress.co.jp/docs/news/
20150829_718619.html• android が ipv4only.arpa. の AAAA を引く理由
– http://www.slideshare.net/twovs/192004-on-android