China Jumps to IPv6 While U.S. Moves Slowly Away From IPv4
March 11, 2013 6:19 PM
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China's state ISP rolls out next generation standard
The ever-present desire for censorship may be the carrot, but for whatever reason China has a head start on
. Even as the U.S. moves sluggishly towards the next generation internet address protocol, 3TNet -- China's state-provided broadband internet and public video service -- has made the switch.
The upside of IPv6 is one that's likely highly desirable in China -- more space. IPv4, the previous standard, only allows 4.3 billion unique web addresses. With over a billion people, China may surpass that total in domestic pages alone.
IPv6 is also expected to beef up security. Using a technology called Source Address Validation Architecture (SAVA), IPv6 networks establish a relationship based on multiple trusted interactions across a network. This can help beat so-called "IP spoofing" attacks, and advances the current version of IPv6 over
less secure earlier versions
A U.S. Navy sponsored
made public this week, authored by the
New England Complex Systems Institute
, listed identity trust and the lack of addressing space as the two biggest shortcomings of the widespread and successful IPv4.
Running out of room, China has turned to IPv6 for more space and security.
[Image Source: Digital Trends]
That's not to say IPv6 doesn't have its potential problems as well. While the new protocol increases addressing space by 80 trillion or so, some fear it provides too fine grain identification, eliminating anonymity on sensitive locations like private networks. There's also fear that the technology's ability to uniquely identify traffic sources could be
overstated by the layman
(as people could still hack into your device and do mischief on your precise IP).
Ultimately China may be eager to de-anonymize its citizens as well. The nation has long fought to control its citizens' internet activities; now it has a far finer form of tracking. However, it may not be immediately available to bump its domestic surveillance capabilities, as the extra information requires extra data mining and new analysis algorithms to store and process into useful results.
[Image Source: Boot Click]
For now, Chinese citizens are mostly enjoying the benefits of IPv6 alone -- more space and more security.
, an information systems specialist at the
University of Maryland
, who also chairs the
Chinese American Network Symposium
, says that China is far ahead of the U.S. in IPv6 deployment. In an interview with
, he comments on 3TNet, "China has a national internet backbone in place that operates under IPv6 as the native network protocol. We have nothing like that in the US."
China is also leading the U.S. in some other high tech ventures, such as
deploying high speed rail
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RE: Increased by 80 Trillion?
3/12/2013 6:09:07 AM
Because IP addresses are like Moore's Law, where the increase in CPU speed creates a demand for more speed, so the same applies for IP addresses: having more gives people new ideas on how to use the surplus addresses, which in turn creates new demand for the addresses.
RE: Increased by 80 Trillion?
3/12/2013 2:26:39 PM
Not in this case. The number of IPv6 addresses is enough to give about 50,000 trillion trillion unique IPs to each person on earth. Even with Moore's law, there's no way we'd ever use all of them.
The reason they made so many addresses is for sparse allocation. Just because an entity has been assigned a block of addresses doesn't mean all those addresses will be used. In fact the worst case
if all those addresses are used. You don't start off at an address of 1, assign the next person 2, the next person 3, etc. You assign blocks of addresses to countries, which assign blocks of addresses to ISPs, which assign blocks of addresses to customers like companies, which assign blocks of addresses to departments, which assign blocks of addresses to LANs, which assigns an individual IP to each computer.
At each step of the above, you want to assign more addresses than the country / ISP / customer / etc could ever conceivably use. That way not only are all the addresses that entity receives contiguous, but you never have to revisit it and allocate them more (non-contiguous) addresses because they used up everything you initially allocated to them.
So there ends up being a lot of addresses which could
be used but never are. You want your IP space to be big enough to cover all this potential use without running out of numbers.
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