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DESCRIPTION
NTTがIPv6インターネットと接続されていないIPv6を提供した理由や背景などを紹介しています。可能な限り技術的な部分を語らないという方向性で資料が作成されているので、エンジニアな方々には多少もの足りないかも知れません。
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192 . 0 . 2 . 1
11000000 00000000 00000010 00000001
8
32
2001 : 0db8 : 11aa : 22bb : 33cc : 44ee : 55ff : 0006
0010 0000 0000 0001
16
128
IPv4
IPv6
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ARIN
LACNIC
APNIC
AfriNIC
RIPE-NCC
IANA
APNIC LACNIC AfriNICARINRIPE-
NCC
… … … …
CNNIC JPNIC TWNICIDNIC VNNIC…
ISP…
RIR
NIR
LIR
IPv4
IPv4
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IPv4IPv4 IPv4
IPv4IPv4 IPv4
IPv4IPv4 IPv4
IPv4IPv4 IPv4
1IPv4
Large Scale NAT
SOHO
NAT
ISP
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ISP
NGN
NGN PPPoE
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NGN
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IPv4ISP
NTT ISP
ISPISP
ISP
POI : Point Of Interface
A IP
A POI
C IP
C POI
B IP
B POI
ISP
ISP
IPv4
ISPISP
A IP
A POI
C IP
C POI
B IP
B POI
IIJ FreeBit Vectant NTT PC
IPv4
A IP
A POI
C IP
C POI
B IP
B POI
C
ISPC POI
OK
IPv4
IPv4
NTT IPv6
ISP
IPv4
IPv4
IPv6
IPv4IPv6
IPv6
IPv4
IPv4
NTT IPv6
ISP
IPv4
IPv4
TCP
RST
IPv6 TCP
SYN
IPv6 TCP RST
IPv4
IPv6
ISP A NTT NGN
2001:db8:beef::/482001:db8:aaaa::/48
2001:db8:aaaa:0001::1
2001:db8:beef:cccc::1
2001:db8:beef:cccc::2
2001:db8:aaaa:0001::2
IPv6
IPv6
A B
IPv6
ISP A NTT NGN
2001:db8:beef::/482001:db8:aaaa::/48
2001:db8:aaaa:0001::1
2001:db8:beef:cccc::1
2001:db8:beef:cccc::2
2001:db8:aaaa:0001::2
IPv6
IPv6
A B
2001:db8:aaaa:0001::2
A
IPv6
ISP A NTT NGN
2001:db8:beef::/482001:db8:aaaa::/48
2001:db8:aaaa:0001::1
2001:db8:beef:cccc::1
2001:db8:beef:cccc::2
2001:db8:aaaa:0001::2
IPv6
IPv6
A B
2001:db8:beef:cccc::2
A
POI : Point Of InterfaceA NGN
A POI
C NGN
C POI
B NGN
B POI
ISP
ISP
IPv6
ISP
VNE VNEVNE
IPv6
NGN
ISP
ISP VNE
ISP
VNE IPv6
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