Subject: Networking | July 5, 2015 - 11:17 PM | Scott Michaud
Tagged: ipv6, ipv4, arin
While the IP system allows for about 4.3 billion addresses, not all of those are available to actual devices. There are some that are designed for private network use, so a router can assign them without worrying that it is blocking traffic to some external resource. Another big drain was wasted addresses, where organizations would purchase a big chunk of the public address space and use a tiny fraction of it. Beyond that, we just have a lot of devices, from cell phones, to home networks, to the servers they contact. Microsoft is trying to reach a billion devices with Windows 10, and the vast majority of them are expected to be online.
I'm mentioning it now because the American Registry for Internet Numbers (ARIN) announced that they will be unable to fulfill some requests for IPv4 blocks. All they have left at the moment are /23 and /24 chunks, which are bundles of 512 and 256 public addresses. As of the time of publishing, 46 chunks of 512 and 431 chunks of 256 are available, which is 133,888 total public numbers.
Of course, it's not as simple as saying “let's move to IPv6 then”. There will be some pain when the switch happens. For instance, Unreal Engine 4 has only been IPv6-compliant for a year, with the launch of Unreal Engine 4.2 in June 2014. This poses a significant problem for older games that rely upon IPv4 addresses for multiplayer, and that doesn't even consider other online software.
Subject: Networking | June 9, 2011 - 02:19 AM | Tim Verry
Tagged: networking, ipv6, Internet
As has been said numerous times throughout the Internet, the pool of available IPv4 (32 bit) addresses are running out. This is due to an ever increasing number of Internet users all over the world. In response to this, the standards for IPv4’s successor were developed by the Internet Engineering Task Force. The new IPv6 standard uses 128-bit addresses, which supports 2^128 (approximately 340 undecillion) individual addresses. Compared to IPv4’s 32-bit addresses, which can support up a little under 4.30 billion addresses (4,294,967,296 to be exact), the new Internet protocol will easily be able to assign everyone a unique IP address and will enable support for multiple devices per user without the specific need for network address translation (NAT).
Today is World IPv6 Day, and is the first widespread (live) trial of IPv6. Over a 24 hour period numerous large and small websites plan to switch on IPv6 to test for consumer readiness for the protocol. Big companies such as Google, Facebook, Yahoo, Youtube, and Bing are participating by enabling IPv6 alongside IPv4 to test how many users are able to connect to IPv6 versus IPv4. Led by the Internet Society, consumers and businesses are encouraged to help test the new IP protocol by visiting the participants sites and running readiness tests.
According to Network World, the trial has been going very well. They state that, according to Arbor Networks, overall IPv6 traffic volume has “doubled during the first 12 hours.” Further, Akamai experienced a tenfold increase in IPv6 traffic just before the event. Fortunately, this increase did not result in an increase of DDoS attacks, which Akami states were minimal. The June 8, 2011 event was used as a deadline of sorts by many businesses, and resulted in many large corporations getting their IPv6 protocol up and running.
While the event only lasts 24 hours, some large websites likely will continue to enable IPv6 alongside IPv4 addressing. Network Wold quotes Champagne in hoping more businesses will move to IPv6 after seeing the successes of the World IPv6 Day participants now that “everybody went into the water today and found out that the water is fine.”
It will certainly be interesting to see if the success continues and if consumers still on IPv4 can be made ready before the 32-bit address well runs dry, much like the move to digital TV broadcasting in the US saw many deadline push-backs. Are you ready for IPv6?
Subject: General Tech, Networking | June 8, 2011 - 03:38 PM | Jeremy Hellstrom
Tagged: what could go wrong, networking, ipv6, 404
On February 3 of this year, the last block of IPv4 addresses were allocated which brought IPv6 to the forefront of the minds of many network heads. NAT and internal LANs can extend the usage of IPv4 for quite a while and many of the allocated addresses are not actually in use which is a good thing as not many OSes support IPv6 natively, nor do many network appliances.
That brings us to today, where many major websites are cumulating all of the internal testing they have been performning by doing a 24 hour dry run of IPv6. Companies like Juniper and Cisco have been working to ensure their portion of the Internet's backbone will be able to handle the new addressing scheme so that clients can connect to the sites that are testing IPv6. Google, Facebook, Yahoo and Bing have all turned on IPv6 as have several ISPs including Comcast, AT&T and Verizon, with Verizon's LTE mobile network are also testing IPv6. You can see a full list of the participants here.
This will of course involve a little pain, as new technology does tend to have sharp edges. You may well see a few 404's or have other problems when surfing the net today but overall it should not be too bad, Google predicts about a 1% failure rate. The hackers will also be out to play today, likely using the larger sized packets for DDoS attacks. Since the IPv6 packets are four times larger than an IPv6 packet, a flood of the new protocol will be super effective at DDoS attacks. As well, most of the IPv6 packets will be bypassing companies current deep packet inspection hardware and software, IPv6 is not backwards compatible with IPv4 so the network appliances used for that type of scan simply cannot inspect IPv6 packets. That is not to say that these devices cannot inspect IPv6 packets, simply that for a one day test major providers are reluctant to completely reprogram the devices. In the case of an attack, most of the participants have a plan in place to revert immediately back to IPv4.
"Sponsored by the Internet Society, World IPv6 Day runs from 8 p.m. EST Tuesday until 7:59 p.m. EST Wednesday. The IT departments in the participating organizations have spent the last five months preparing their websites for an anticipated rise in IPv6-based traffic, more tech support calls and possible hacking attacks prompted by this largest-ever trial of IPv6."
Here is some more Tech News from around the web:
- Skype hangs up on users yet again @ The Register
- Microsoft reportedly considers launching own-brand tablet @ DigiTimes
- New AMD CEO imminent @ SemiAccurate
- Chrome 12 adds a raft of new features @ The Inquirer
- TomTom GO 2535 M LIVE Review @ TechReviewSource
- The Post PC era begins @ t-break
- Win 2 Logitech diNovo Keyboards for Notebooks @ t-break