1. IPv4 2013/05/20

2. 2 2013 (c) INTERNET MULTIFEED CO. JANOG31 3. 3 2013 (c) INTERNET MULTIFEED CO. IPv4 IPv4/IPv6 IPv4/IPv6 IPv4/IPv6 IPv4 over IPv6 IPv4/IPv6 IPv4 over IPv6 IPv4/IPv6 IPv4/IPv6 4. 2013 (c) INTERNET MULTIFEED CO. 4 5. 5 2013 (c) INTERNET MULTIFEED CO. IPv4 2011/02/03 INAIA 2011/04/19 APNIC /8 2012/09/14 RIPE() ANA Unallocated Address Pool Exhaustion: 03-Feb-2011 Projected RIR Address Pool Exhaustion Dates: RIRProjected Exhaustion Date Remaining Addresses in RIR Pool (/8s) APNIC: 19-Apr-2011 (actual) 0.8667 RIPE NCC: 14-Sep-2012 (actual) 0.9022 ARIN: 12-Apr-2014 2.3224 LACNIC: 04-Sep-2014 2.5227 AFRINIC: 09-Aug-2020 3.7283 http://www.potaroo.net/tools/ipv4/ 6. 6 2013 (c) INTERNET MULTIFEED CO. IPv4 2011/03/24 MicrosoftNortel666,624IPv4$7.5M IPv4$11.25 http://www.networkworld.com/community/blog/microsoft-pays-nortel-75-million-ipv4-address 7. 7 2013 (c) INTERNET MULTIFEED CO. IPv4 2011/08/01 JPNICIPv4 72(2013/05/09) 2012/07 RIR() 2013/06/03 JPNIC https://www.nic.ad.jp/ja/ip/ipv4transfer-log.html 8. 8 2013 (c) INTERNET MULTIFEED CO. IPv4 2013/05/07 UQ WiMAXWiMAXIPv4 100 IPv4 http://www.uqwimax.jp/service/price/option07.html 9. 9 2013 (c) INTERNET MULTIFEED CO. IPv6(Cisco) Cisco 46.50% AS 78.95% 27.52%Top500 Web 2.32% http://6lab.cisco.com/stats/ 10. 10 2013 (c) INTERNET MULTIFEED CO. IPv6(Google) Google 1.25 2.08 IPv6 https://www.google.com/intl/ja/ipv6/statistics.html 11. 11 2013 (c) INTERNET MULTIFEED CO. IXIPv6 https://www.ams-ix.net/technical/statistics/sflow-stats/ipv6-traffic http://www.de-cix.net/about/statistics/ 6.8 Gbps / 1936 Gbps = 0.35 11.5 Gbps / 2775 Gbps = 0.41% 1.0 Gbps / 300 Gbps = 0.33 12. 2013 (c) INTERNET MULTIFEED CO. 12 13. 13 2013 (c) INTERNET MULTIFEED CO. IPv4/IPv6 IPv4/IPv6 ISP Dual Stack IPv4 over IPv6 IPv6 over IPv4 IPv4 from/to IPv6 Client ISP Server Solution v4 v4 v4 CGN v4 v6 v4 MAP, DS-Lite, 464XLAT v6 v4 v6 6rd v6 * v4 NAT64 IPv4IPIPv6 IPv4/IPv6 14. 14 2013 (c) INTERNET MULTIFEED CO. IPv4 IPv4/IPv6 IPv6IPv4 IPv4 IPv4 IPv6 IPv6IPv4 IPv4 IPv4IPv6 ISP IPv4 over IPv6 IPv4(NAPT) 15. 15 2013 (c) INTERNET MULTIFEED CO. IPv4 IPv4 DC IPv4 IPv4ISP 16. 16 2013 (c) INTERNET MULTIFEED CO. IPv4/IPv6 SAM 4rd MAP-E 4rd-(H,U)NAT-PT NAT64 IVI dIVI dIVI-pd MAP-T XLAT464 NAT464 DS-lite Public 4over6 Lightweight 4over6 Stateless DS-lite MAP MAP-DHCP MAP-DEPLOYMENT A+P RFC1933 Congured tunnels Automatic tunnels 6to4 (RFC3056) 6rd (RFC5969) 6over4 ISATAP Teredo Tunnel brokers Softwire mesh BGP tunnels 6PE 6VPE http://www.swinog.ch/meetings/swinog24/p/04_townsley-map-swinog-may-2012-distribution.pdf 17. 17 2013 (c) INTERNET MULTIFEED CO. IPv4CPE(NAPT) IPv6IPv4 NAT() (CPE or ISP) IPv6 ( or ) (Encupslation) (Translation) Stateful DS-Lite 464XLAT Stateless MAP-E MAP-T 18. 18 2013 (c) INTERNET MULTIFEED CO. ISPIPv61IPv4 IPv4 ISPIPv6 IPv4 IPv4 IPv4 CPE() or 19. 19 2013 (c) INTERNET MULTIFEED CO. IPv4IPv6 IPv6 IPv4IPv6 IPv4 Payload IPv4 IPv6 Payload IPv4 Payload IPv4 Payload IPv6 Payload IPv4 Payload IPv4 20. 20 2013 (c) INTERNET MULTIFEED CO. (Stateless) (Stateful) NAPT Protocol DstAddr DstPort SrcAddr SrcPort TCP 192.0.2.13 179 192.168.3.2 48329 UDP 10.56.2.1 53 192.168.11.5 9136 21. 2013 (c) INTERNET MULTIFEED CO. 21 22. 22 2013 (c) INTERNET MULTIFEED CO. IPv4/IPv6 SAM 4rd MAP-E 4rd-(H,U)NAT-PT NAT64 IVI dIVI dIVI-pd MAP-T XLAT464 NAT464 DS-lite Public 4over6 Lightweight 4over6 Stateless DS-lite MAP MAP-DHCP MAP-DEPLOYMENT A+P RFC1933 Congured tunnels Automatic tunnels 6to4 (RFC3056) 6rd (RFC5969) 6over4 ISATAP Teredo Tunnel brokers Softwire mesh BGP tunnels 6PE 6VPE http://www.swinog.ch/meetings/swinog24/p/04_townsley-map-swinog-may-2012-distribution.pdf 23. 23 2013 (c) INTERNET MULTIFEED CO. NAT-PT (NAT Protocol Translation) IPv4IPv6[RFC2766] NAPTNAPT-PT RFCHistoric[RFC4966] 96-bitIPv632-bitIPv4128-bit IPv6 NAT-PTApplication Level Gateway (ALG) DNS[RFC2694] ICMP[RFC2765]FTP IP ALGDNSFTP SIP ALGNAT-PT DNS-SEC DNSALG IPvX IPvY NAT-PT DNS DNS 24. 24 2013 (c) INTERNET MULTIFEED CO. NAT64 IPv6IPv4NAT[RFC6146] IP/ICMP[RFC6145] NAPT-PTDNS ALGDNS64[RFC6147] v6v6v4 TCP/UDP/ICMPNATNAT Traversal 96-bitIPv632-bitIPv4128-bitIPv6 DNSDNS64DNS ALGIPv4 MSN Messenger (2009) 2.38WebIPv4 IPv6 IPv4 NAT64 DNS64 DNS [v4literals] 25. 25 2013 (c) INTERNET MULTIFEED CO. 464XLAT IPv4/IPv6[RFC6145]NAT64[RFC6146]v4/v6/v4 RFC6877[RFC6877] NAT64 IPv4-IPv4DNSALG CLATIPv4IPv6(1:1) PLATNAT64IPv6IPv4(n:1) IPv6 IPv4 PLAT 64 (RFC6146(NAT64)) IPv4 CLAT 46 (RFC6145) ISP 26. 26 2013 (c) INTERNET MULTIFEED CO. 464XLAT PLAT: Provider side translator(XLAT) ISP RFC6146(NAT-64) IPv6IPv41:n CLAT: Customer side translator(XLAT) RFC6145 IPv4IPv61:1 96-bit IPv632-bit IPv4 96-bit 32-bit 32-bit IPv4 IPv6 27. 27 2013 (c) INTERNET MULTIFEED CO. 464XLAT PLAT Cisco ASR 1000Series (IOS-XE3.4.0S~) Juniper SRX Series (JUNOS10.4~) A10 Networks AX Series (ACOS 2.6.4~) F5 Networks BIG-IP Series (11.1~) Ecdysis NAT64 linux nat64 OpenBSD PF CLAT NEC AccessTechnica CL-AT1000P Linux Prototype Nokia n900 android-clat LG myTouch Samsung Nexus 28. 28 2013 (c) INTERNET MULTIFEED CO. IPv4 over IPv6 SAM 4rd MAP-E 4rd-(H,U)NAT-PT NAT64 IVI dIVI dIVI-pd MAP-T XLAT464 NAT464 DS-lite Public 4over6 Lightweight 4over6 Stateless DS-lite MAP MAP-DHCP MAP-DEPLOYMENT A+P RFC1933 Congured tunnels Automatic tunnels 6to4 (RFC3056) 6rd (RFC5969) 6over4 ISATAP Teredo Tunnel brokers Softwire mesh BGP tunnels 6PE 6VPE http://www.swinog.ch/meetings/swinog24/p/04_townsley-map-swinog-may-2012-distribution.pdf 29. 29 2013 (c) INTERNET MULTIFEED CO. DS-Lite IPv4 over IPv6CGN[RFC6333] Dual StackDual StackDual Stack Lite CPEB4 (Basic Bridging BroadBand) AFTR (Address Family Transition Router) B4IPv4 over IPv6AFTR AFTRNAPT44 NAPTB4IPv6 IPv4AFTR: 192.0.0.1/29, B4: 192.0.0.2/29 IPv4 over IPv6 IPv4 AFTR IPv4 over IPv6 44(CGN) IPv4 B4 IPv4 over IPv6 ISP 30. 30 2013 (c) INTERNET MULTIFEED CO. DS-Lite AFTR Cisco CRS Series (IOS XR-4.2.1~) Juniper MX/M/T Series (JUNOS 10.4~) A10 Networks AX Series (ACOS 2.6.1~) ISC aftr B4 IPv4 over IPv6 Cisco IOS IIJ SEIL/X1 31. 31 2013 (c) INTERNET MULTIFEED CO. IPv4/IPv6 SAM 4rd MAP-E 4rd-(H,U)NAT-PT NAT64 IVI dIVI dIVI-pd MAP-T XLAT464 NAT464 DS-lite Public 4over6 Lightweight 4over6 Stateless DS-lite MAP MAP-DHCP MAP-DEPLOYMENT A+P RFC1933 Congured tunnels Automatic tunnels 6to4 (RFC3056) 6rd (RFC5969) 6over4 ISATAP Teredo Tunnel brokers Softwire mesh BGP tunnels 6PE 6VPE http://www.swinog.ch/meetings/swinog24/p/04_townsley-map-swinog-may-2012-distribution.pdf 32. 32 2013 (c) INTERNET MULTIFEED CO. IVI (1:N) IVI (1:N) NAT64 [RFC6219] IPv6 DNSDNS64(RFC6147)ICMPRFC6145 (IV)(VI)IVI 1:NN1IPv4 /32 P P = j*N + K (j=0..N-1, K=0..N-1) IVI OS Port Coding (PC)N4-bit, K12-bit IPv4 RFC6052 LIR PCIPv6 FF IPv4 0 32 400 72 84 128 33. 33 2013 (c) INTERNET MULTIFEED CO. dIVI (1:N) v4/v6(1:1 IVI) + v6/v4(1:N IVI) IVIdouble IVI 1:1 IVI IVI()NAPT 1:N IVI dIVI-pd prefix-delegation IPv6 IPv4 1:N IVI 64 IPv4 1:1 IVI 46 ISP 34. 34 2013 (c) INTERNET MULTIFEED CO. MAP: Mapping Address and Port A+P (Address plus Port) IPv432-bit(16-bit)48-bit [RFC6346] 1IPv4 SAM (Stateless Address Mapping) 6rdIPv6IPv4 IPv6IPv4bit bit[sam] MAP IPv6IPv4 FMR = forwarding mapping rule port mapping algorithm 35. 35 2013 (c) INTERNET MULTIFEED CO. MAP-T (Mapping of Address and Port using Translation) MAPv4/v6/v4[map-t] CPENAPT CPECE(Customer Edge)BR(Border Relay) CENAPT44 MAPport mapping algorithm CEMAPFMRv4/v6 BRv6/v4 IPv6 IPv4 BR 64 IPv4 CE MAP NAPT4446 ISP 36. 36 2013 (c) INTERNET MULTIFEED CO. IPv4 over IPv6 SAM 4rd MAP-E 4rd-(H,U)NAT-PT NAT64 IVI dIVI dIVI-pd MAP-T XLAT464 NAT464 DS-lite Public 4over6 Lightweight 4over6 Stateless DS-lite MAP MAP-DHCP MAP-DEPLOYMENT A+P RFC1933 Congured tunnels Automatic tunnels 6to4 (RFC3056) 6rd (RFC5969) 6over4 ISATAP Teredo Tunnel brokers Softwire mesh BGP tunnels 6PE 6VPE http://www.swinog.ch/meetings/swinog24/p/04_townsley-map-swinog-may-2012-distribution.pdf 37. 37 2013 (c) INTERNET MULTIFEED CO. 4rd (IPv4 Residual Deployment) NAPT44 + IPv4 over IPv6[4rd] CPENAPT 4rd[4rd-u](despres4rd) IPv4IPv6 CENAPTIPv6 BRIPv4IPv6CE IPv4 over IPv6 IPv4 BR IPv4 CE NAPT44 IPv4 over IPv6 ISP IPv4 over IPv6 38. 38 2013 (c) INTERNET MULTIFEED CO. MAP-E (Mapping of Address and Port with Encapsulation) MAPNAPT44 + IPv4 over IPv6[map-e] CPENAPT MAP IPv4IPv6 CENAPTIPv6 CEIPv6 BRIPv4IPv6CE IPv4 over IPv6 IPv4 BR IPv4 CE MAPNAPT44 IPv4 over IPv6 ISP IPv4 over IPv6 39. 39 2013 (c) INTERNET MULTIFEED CO. MAP-E BR FNSC FX Series IP Infusion (Linux/NetBSD) ASAMAP IIJ SEIL/X1 Cisco ASR9000(IOS-XR) CE BR FNSC F Series YAMAHA RTX1200 CERNET OpenWRT 40. 40 2013 (c) INTERNET MULTIFEED CO. JANOG31 Tech Role Day1 Day2 MAP-E BR IPI IPI FNSC CE1 SEIL FNSC ASAMAP YAMAHA CE2 FNSC FNSC DS-Lite AFTR A10 A10 B4 NECAT SEIL 464XLAT PLAT A10 A10 CLAT NECAT NECAT 41. 41 2013 (c) INTERNET MULTIFEED CO. BR@JANOG31 MAP-EBRBR 42. 42 2013 (c) INTERNET MULTIFEED CO. IPv4 over IPv6 IPv4 BR IPv4 CE NAPT44 4o6 4o6 IPv4 over IPv6 IPv4 AFTR IPv4 B4 4o6 NAPT4o6 IPv6 IPv4 PLAT IPv4 CLAT NAT46 NAT64 IPv6 IPv4 BR IPv4 CE NAT46 NAT64 MAP-E DS-Lite 464XLAT MAP-T 43. 43 2013 (c) INTERNET MULTIFEED CO. SAM 4rd MAP-E 4rd-(H,U)NAT-PT NAT64 IVI dIVI dIVI-pd MAP-T XLAT464 NAT464 DS-lite Public 4over6 Lightweight 4over6 Stateless DS-lite MAP MAP-DHCP MAP-DEPLOYMENT A+P RFC1933 Congured tunnels Automatic tunnels 6to4 (RFC3056) 6rd (RFC5969) 6over4 ISATAP Teredo Tunnel brokers Softwire mesh BGP tunnels 6PE 6VPE http://www.swinog.ch/meetings/swinog24/p/04_townsley-map-swinog-may-2012-distribution.pdf 44. 44 2013 (c) INTERNET MULTIFEED CO. 4rd-U (-Unified) MAP-EMAP-TIPv4 [4rd-u] Lightweight 4 over 6 (LW4o6)[LW4o6] Payload IPv4 IPv6 MAP-E Payload IPv4 IPv6 MAP-T Payload IPv6 4rd-U DS-LiteCPE MAPE 45. 45 2013 (c) INTERNET MULTIFEED CO. IPv4 CPE MAP-E (4rd) MAP-T (dIVI) 4rd (4rd-U) ISP NAT44 CGN DS-Lite 464XLAT CPE ISP NAT444 IPv4 NAT LW4o6 Softwire Unified CPE[unified-cpe] 46. 2013 (c) INTERNET MULTIFEED CO. 46 47. 47 2013 (c) INTERNET MULTIFEED CO. DS-Lite 464XLAT MAP-E MAP-T 4rd-u LW4o6 Encap/ Trans Encap Trans Encap Trans Hybrid Encap Stateless /Stateful Stateful Stateful Stateless Stateless Stateless Stateless Mesh ready No No Yes Yes Yes No Address Mapping http://www.slideshare.net/m-asama/map-14353679 48. 48 2013 (c) INTERNET MULTIFEED CO. MTU + 40 byte : +20 byte IP IPv6 TCPMSS ClampingMSS MAP-T UDP NAPT IPv4NAPT IPNAPT ICMP: L2TP, PPTP: IPsec: NAPTUDPwrap 49. 49 2013 (c) INTERNET MULTIFEED CO. vs IPv4 IPv6 ACLQoSDPI MTU IPv4 over IPv6 IPv4IPv4 IPv6 IPv4IPv4 50. 50 2013 (c) INTERNET MULTIFEED CO. vs Anycast IPv4 (dynamic allocation) CPE IPv4IPv4 IPv6 IPv4IPv4 IPv6 51. 51 2013 (c) INTERNET MULTIFEED CO. v4 over v6v6 over v4CGN [46chart] 52. 2013 (c) INTERNET MULTIFEED CO. 52 53. 53 2013 (c) INTERNET MULTIFEED CO. NAPT NAPT NAT [napt-stun] IPv4 ISP IPv4 54. 54 2013 (c) INTERNET MULTIFEED CO. IPv4 IPv4 RFC6302 IP (UTC) (TCP/UDP) 55. 2013 (c) INTERNET MULTIFEED CO. 55 56. 56 2013 (c) INTERNET MULTIFEED CO. MAP IPv6IPv4 32-bit(Suffix) BRCE IPv6 (PSID: Port Set ID) IPv6 Prefix subnet ID IPv4 Prefix IPv4 Suffix Interface ID IPv4 IPv6 IPv6 Prefix subnet ID IPv4 Prefix IPv4 Suffix Interface ID IPv4 IPv6 PSID EA bits 57. 57 2013 (c) INTERNET MULTIFEED CO. MAP Port Set ID16-bitk-bit AA0() IPv6IPv4(Basic Mapping Rule, BMR) {IPv6IPv4EA bits}BRCE IPv4: IPv4 PrefixSuffixPSIDEA bits IPv6: IPv6 PrefixEA bits32-prefixIPv4 Suffix PSID A PSID M(16-bit) IPv6 Prefix subnet ID IPv4 Prefix IPv4 Suffix Interface ID IPv4 IPv6 PSID EA bits 58. 58 2013 (c) INTERNET MULTIFEED CO. MAP Forwarding mapping rule (FMR) Port mapping algorithm |32bits||16bits| +--------------------------++-------------------+ |IPv4destinationaddress||IPv4destport| +--------------------------++-------------------+ ::___/: |pbits|/qbits: +----------++------------+ |IPv4sufx||Port-SetID| +----------++------------+ /____/________/ :__/_____/ :// |nbits|obits|sbits|128-n-o-sbits| +--------------------+-----------+---------+------------+----------+ |RuleIPv6prefix|EAbits|subnetID|interfaceID| +--------------------+-----------+---------+-----------------------+ || 01234567890123456 +-----------+-----------+-------+ Portsin|A|PSID|M| theCEportset|>0||| +-----------+-----------+-------+ |abits|kbits|mbits| 59. 59 2013 (c) INTERNET MULTIFEED CO. (1/6) IPv4 [ipv4-report] IPv4 Address Report http://www.potaroo.net/tools/ipv4/ IPv6 [cisco6] Cisco IPv6 Lab: IPv6 Deployment http://6lab.cisco.com/stats/ [google6] IPv6 Google https://www.google.com/intl/ja/ipv6/statistics.html [amsix6] AMS-IX IPv6 Traffic https://www.ams-ix.net/technical/statistics/sflow-stats/ipv6-traffic [decix6] DE-CIX Native IPv6 Traffic http://www.de-cix.net/about/statistics/ IPv4/IPv6 [loadmap] Mapping Address + Port http://www.swinog.ch/meetings/swinog24/p/04_townsley-map-swinog-may-2012- distribution.pdf 60. 60 2013 (c) INTERNET MULTIFEED CO. (2/6) NAT-PT [RFC2766] Network Address Translation - Protocol Translation (NAT-PT) http://tools.ietf.org/html/rfc2766 [RFC2765] Stateless IP/ICMP Translation Algorithm (SIIT) http://tools.ietf.org/html/rfc2765 [RFC2694] DNS extensions to Network Address Translators (DNS_ALG) http://tools.ietf.org/html/rfc2694 [RFC4966] Reasons to Move the Network Address Translator - Protocol Translator (NAT-PT) to Historic Status http://tools.ietf.org/html/rfc4966 NAT64 [RFC6146] Stateful NAT64: Network Address and Protocol Translation from IPv6 Clients to IPv4 Servers http://tools.ietf.org/html/rfc6146 [RFC6147] DNS64: DNS Extensions for Network Address Translation from IPv6 Clients to IPv4 Servers http://tools.ietf.org/html/rfc6147 [RFC6145] IP/ICMP Translation Algorithm http://tools.ietf.org/html/rfc6145 61. 61 2013 (c) INTERNET MULTIFEED CO. (3/6) [v4literals] Coping with IP Address Literals in HTTP URIs with IPv6/IPv4 Translators http://tools.ietf.org/html/draft-wing-behave-http-ip-address-literals-02 464XLAT [RFC6877] 464XLAT: Combination of Stateful and Stateless Translation http://tools.ietf.org/html/rfc6877 [464xlat-products] IPv6IPv4 464XLAT http://www.janog.gr.jp/meeting/janog30/doc/janog30-v64-pre-kawashimam-01.pdf IVI [RFC6219] The China Education and Research Network (CERNET) IVI Translation Design and Deployment for the IPv4/IPv6 Coexistence and Transition http://tools.ietf.org/html/rfc6219 [RFC6052] IPv6 Addressing of IPv4/IPv6 Translators http://tools.ietf.org/html/rfc6052 dIVI [divi] Address-sharing stateless double IVI http://tools.ietf.org/html/draft-xli-behave-divi-01 [divi-pd] dIVI-pd: Dual-Stateless IPv4/IPv6 Translation with Prefix Delegation http://tools.ietf.org/html/draft-xli-behave-divi-pd-01 62. 62 2013 (c) INTERNET MULTIFEED CO. (4/6) DS-Lite [RFC6333] Dual-Stack Lite Broadband Deployments Following IPv4 Exhaustion http://tools.ietf.org/html/rfc6333 A+P [RFC6346] The Address plus Port (A+P) Approach to the IPv4 Address Shortage http://tools.ietf.org/html/rfc6346 SAM [sam] SAM: Stateless Address Mapping IPv6 IPv4 http://www.janog.gr.jp/meeting/janog26/doc/post-dslite-matsushima.pdf MAP-T [map-t] Mapping of Address and Port using Translation (MAP-T) http://tools.ietf.org/id/draft-ietf-softwire-map-t-01.txt 4rd [4rd] http://tools.ietf.org/html/draft-despres-softwire-4rd-00 MAP-E [map-e] Mapping of Address and Port with Encapsulation (MAP) http://tools.ietf.org/id/draft-ietf-softwire-map-06.txt 63. 63 2013 (c) INTERNET MULTIFEED CO. (5/6) 4rd-U [4rd-u] IPv4 Rapid Deployment on IPv6 Infrastructures (4rd) http://tools.ietf.org/html/draft-vautrin-softwire-4rd-00 [many4rd]4rd - http://www.janog.gr.jp/meeting/janog30/doc/janog30-map-after-matsushima-01.pdf LW4o6 [LW4o6] Lightweight 4over6: An Extension to the DS-Lite Architecture http://tools.ietf.org/html/draft-cui-softwire-b4-translated-ds-lite-11 [unified-cpe] Unified IPv4-in-IPv6 Softwire CPE http://tools.ietf.org/html/draft-bfmk-softwire-unified-cpe-02 [compare] MAP http://www.slideshare.net/m-asama/map-14353679 [46chart] IPV4/V6 https://www.nic.ad.jp/ja/materials/iw/2011/proceedings/t1/t1-01.pdf [config] JANOG Meeting| JANOG31 Meeting http://www.janog.gr.jp/meeting/janog31/LA.html 64. 64 2013 (c) INTERNET MULTIFEED CO. (6/6) [napt-stun] IPv6IPv4/ P2P http://www.janog.gr.jp/meeting/janog30/doc/janog30-v64-pre-stun-ryosato-02.pdf [RFC6302] Logging Recommendations for Internet-Facing Servers http://tools.ietf.org/html/rfc6302