Copyright © Philip M. Parker, INSEAD. Terms of Use.
| Domain | Definition |
Computing | IPv6 Internet Protocol version 6. Source: The Free On-line Dictionary of Computing. |
Source: compiled by the editor from various references; see credits. | |
(From Wikipedia, the free Encyclopedia)
IPv6 is version 6 of the Internet Protocol.
IPv6 is the second version of the Internet Protocol to be widely deployed, and is expected to form the basis for future expansion (as of 2001) of the Internet, replacing the previous standard, IPv4. The previous standard could hold up to 4 billion adresses, whereas IPv6 can hold up to as many as 3.4 × 1038 addresses.
The compelling reason behind the formation of IPv6 was lack of address space, especially in the heavily populated countries of Asia such as India and China among others which do not have enough address space for their use.
The most dramatic change from IPv4 to IPv6 is the length of the network addresses used. IPv6 addresses, as defined by RFC 2373 and RFC 2374, are 128 bits long and are written in hexadecimal with colons. The number of available addresses in IPv6 is 2128 = 3.4 x 1038 (cf. 232 = 4 billion addresses in IPv4). Another way to calculate is 1632 as there are 16 combinations per each digit and 32 digits.
In some situations, IPv6 addresses are composed of two logical parts: a 64-bit network prefix, and a 64-bit host-addressing part, which is often automatically generated from the interface MAC address.
If a 4 digit group is 0000, it may be omitted, thus in the syntax of IPv6
Also leading zero's in all groups can be omitted, thus
IPv4 adresses are easily convertable to IPv6 format. For instance, if the IPv4 adress was 135.75.43.52, it could be converted to 0000:0000:0000:0000:0000:0000:874B:2B34 or ::874B:2B34. Then again, one could use the hybrid notation (IPv4 mapped adresses), in which case the adress would be ::135.75.43.52 .
IPv6 addressing
Notation for IPv6 addresses
IPv6 addresses are 128 bits long, and can be written as eight groups of 4 hexadecimal digits each. For example,
3ffe:6a88:85a3:08d3:1319:8a2e:0370:7344
is a valid address.3ffe:6a88:85a3:0000:1319:8a2e:0370:7344
is the same as
3ffe:6a88:85a3::1319:8a2e:0370:7344
Following this rule, if more than two consecutive colons result from this omission, they may be reduced to two colons, as long as there is only one group of more than two consecutive colons. Thus
2001:2353:0000:0000:0000:0000:1428:57ab
2001:2353:0000:0000:0000::1428:57ab
2001:2353:0:0:0:0:1428:57ab
2001:2353:0::0:1428:57ab
2001:2353::1428:57ab
are all valid and mean the same thing, but
2001::25de::cade
is invalid.2001:2353:02de::0e13
is the same thing as
2001:2353:2de::e13
If the address is an IPv4 address in disguise, the last 32 bits may be written in decimal; thus ::ffff:192.168.89.9 is the same as
::ffff:c0a8:5909, but not the same as
::192.168.89.9 or
::c0a8:5909.
The ::ffff:1.2.3.4 format is called a IPv4-mapped address, and is deprecated. The ::1.2.3.4 format is a IPv4-compatible address.IPv6 deployment
To do:
Related IETF working groups
External links
Source: adapted by the editor from Wikipedia, the free encyclopedia under a copyleft GNU Free Documentation License (GFDL) from the article "IPv6."
| The following table is compiled from various sources, across various languages. When English abbreviations or acronyms come from a non-English source, this is noted. | |||
| Entry | Source | Expression | Field |
IPV6 | English | Internet Protocol Version 6, IPv6 | Computer - (IP, RFC 1883/1884) |
Source: compiled by the editor, based on several corpora (additional references). | |||
Crosswords: IPV6 |
| Specialty definitions using "IPV6": dual-stack ♦ Internet Protocol ♦ Network Address Translation. (references) |
| Domain | Title |
Books | |
Source: compiled by the editor from various references; see credits. | |
| The following statistics estimate the number of searches per day across the major English-language search engines as identified by various trade publications. Hyperlinks lead to commercial use of the expression at Amazon.com. |
| Expression | Frequency per Day | Expression | Frequency per Day |
ipv6 | 401 | ipv6 linux | 3 |
ipv4 ipv6 vs | 9 | ipv6 mobile | 3 |
ipv6 irc | 7 | ipv6 vendor | 3 |
ipv6 tutorial | 7 | ipv6 tunnel | 3 |
ipv6 router | 6 | benefit ipv6 | 3 |
ipv4 ipv6 | 6 | ipv6 trabalho | 3 |
address ipv6 | 5 | ipv6 window | 3 |
ipv6 multicast setting | 5 | ipv6 market report | 3 |
access ipv6 router | 5 | bt internet ipv6 | 2 |
howto ipv6 | 4 | dod ipv6 | 2 |
company ipv6 | 4 | ipv6 need | 2 |
broadband ipv6 solution | 4 | ipv6 protocol | 2 |
ipv6 tunnel broker | 4 | ipv6 rfc | 2 |
ipv6 solution | 4 | ipv6 security | 2 |
internet ipv6 protocol | 4 | ipv6 win98 | 2 |
adsl ipv6 | 4 | edger ipv6 router | 2 |
calculator ipv6 | 4 | ipv6 overview | 2 |
dsl ipv6 | 4 | ipv6 qos | 2 |
ipv6 wifi | 3 | es ipv6 que un | 2 |
ipv4 ipv6 migration | 3 | faq ipv6 | 2 |
header ipv6 | 2 | ||
| Source: compiled by the editor from various references; see credits. | |||
Scrabble® Enable2K-Verified Anagrams | |
| Words within the letters "6-i-p-v" | |
-2 letters: pi. | |
| Source: compiled by the editor from various references; see credits. SCRABBLE® is a registered trademark. All intellectual property rights in and to the game are owned in the U.S.A and Canada by Hasbro Inc., and throughout the rest of the world by J.W. Spear & Sons Limited of Maidenhead, Berkshire, England, a subsidiary of Mattel Inc. Mattel and Spear are not affiliated with Hasbro. | |
Hexadecimal (or equivalents, 770AD-1900s) (references)49 50 56 36 |
| Leonardo da Vinci (1452-1519; backwards) (references)
|
Binary Code (1918-1938, probably earlier) (references)01001001 01010000 01010110 00110110 |
HTML Code (1990) (references)I P V 6 |
ISO 10646 (1991-1993) (references)0049 0050 0056 0036 |
Encryption (beginner's substitution cypher): (references)43505624 |
| 1. Crosswords 2. Usage: Commercial 3. Expressions: Internet 4. Abbreviations | 5. Acronyms 6. Anagrams 7. Orthography 8. Bibliography |
Copyright © Philip M. Parker, INSEAD. Terms of Use.
