Peer IPv4 and IPv6 problem

[Feng]

I’ve observed that µTorrent displays mutually the IPv4 and IPv6 for certain peers, but they are displayed as 2 unusual peers. If I clack on an IPv6 peer, the blue 'selector bar' involuntarily jumps to a IPv4 peer, which has analogous or unerringly the same values under the columns (like Client, %, Peer dl.) as the IPv6 peer, which leads me to believe they are the same peer, and µT is showing both their IPv4 and IPv6 IPs. Also I may not be able to fix my problem due to lack of my knowledge!! Please provide me some information about the problems that are caused in IPv4 and IPv6.!

[BoanHed]

The standardization step protocols based (IPv6 core specs) is completed, the development of technologies that ensure the transition becomes a key issue in the widespread deployment of IPv6. For certain categories of applications such as mail, web, the success of IPv6 is strongly related to interoperability with IPv4 since so far most of the information and users are only accessible with this version of the protocol. Therefore they can initiate a virtuous circle that will move to IPv6. The transition should be simple, or at least less complicated that prolonged use of IPv4. It must also be flexible to permit averaging over time of transition. There is no D-Day for transition from IPv4 to IPv6, there is also no deadline for the disappearance of the IPv4 protocol.

[Jamaima]

Generally, identifying a killer application is sought to justify a rapid move to IPv6. This was the case with IPv4 when the Web emerged. The sites are massively increased from proprietary protocols (IPX, Netbui) to IPv4 to access information through a browser, which led to the concept of intranet. It is currently not known special applications which could lead to massive transition to IPv6. Features are the same, since it is just a new version of IP. The quality of service is often mentioned, but it is an illusion as the reservation mechanisms or differentiation are either in the two protocol versions.

[Billie]

IPv6 will allow you to benefit from recent advances in network: if you have IPv6 now, you have a better guarantee security on the Internet, the tedious configuration does not exist, you can stay connected while moving without causing problems and performance would be as good or better than those you currently have. In addition, IPv6 will make possible the emergence of new applications, now blocked by certain limitations of IPv4. Since this is the future, it is difficult to predict exactly who will benefit from applications of IPv6 successfully. Finally, IPv6 will allow everyone to have an address (and even more!) On the Internet, which is far from being the case. For example, it is now impossible for all students in the world are directly connected to the Internet with current technology.

[Wilbur]

Without applications that take advantage of what is available on IPv6, but IPv6 is primarily a tool that can use the computer. Nevertheless, we can say the same for all technologies: no application, the technology is only marginally useful. But with a little imagination, you can realize that IPv6 could allow new things. Here is a simple example. In Free, the Freebox uses address translation ( NAT ) when in router mode to allow different computers behind it to access the Internet. Although convenient, this complicates things greatly if everyone on the computers in question wish to make VoIP (or provide the same service) at the same time.

[Luther]

I would like to tell you about differences of IPv6 over IPv4.

• Firstly, the length of addresses has been extended, allowing the existence of more places. An IPv6 address is 128 bits long, so that IPv4 addresses are 32 bits long. The IP packet has been simplified, while allowing to add extensions for new features.
• This speeds up the routing and introduce among other concepts of quality of service, security and mobility at the IP level, filling large gaps in IPv4.
• Besides an improved routing efficiency, some changes also allow a better adaptation to the constraints of existing and future networks.
• Finally, to facilitate the migration from IPv4 interoperability mechanisms and correspondence between IPv4 and IPv6 have been introduced.

[Trio]

Indeed, already with IPv4, an IPv4 address is used to connect to the Internet. This IPv4 address can be used to find the person who is connected (so that people have been summoned to court for sharing files on peer-to-peer). One might think that NAT is a barrier to this type of identification, but not necessarily the case (because a priori, the head of the NTA is responsible for the traffic that passes through it) and anyway, it is also possible to do NAT with IPv6. Furthermore, with IPv6, it will be possible to use the same person, different addresses for different purposes (which may not be possible with IPv4) since a large number of IPv6 addresses available for each connection. This case does not guarantee anonymity, but it can help to obscure tracks.

[deveritt]

A native IPv6 connectivity is used primarily at developers and network engineers to test the IPv6 protocol, and so the reliability and validation. Another use is significant opportunity to obtain an IPv6 address public and therefore accessible from anywhere on the Internet for all your equipment behind a single Internet access. This allows us to avoid NAT problems and to facilitate (or make possible, because in some cases, it was not possible) the use of certain applications such as VoIP applications.

[Techguru01]

The most important improvement is the simplification of IPv6 headers of datagrams. The basic IPv6 datagram header contains only seven fields (as opposed to 14 IPv4 ). This change allows routers datagrams processed more quickly and improve overall speed. Another improvement is to provide greater flexibility in the options. This change is essential in the new header, as obligatory fields of the previous version are now optional. Furthermore, the way in which the options are represented is different as it allows routers to simply ignore the options that are not intended for them. This feature speeds up processing times for datagrams.

[Twitter]

There are two different classes of users from network equipment, reported (mostly business and professional users), and uninformed (mainly consumer). The first understand that network devices are computers whose software might need specific security enhancements and performance. The latter generally consider your computer as an appliance, which is only set up after out of the box, and those only experience improvements in the software when it is absolutely unchanged. Inevitably the second group that has no knowledge about the difference between IPv4 and IPv6, but it is the one most likely to suffer when you have to replace your computer, since the equipment can usually commercial grade supporting IPv6 for many years.

[Michael Sabin]

IPv6 is not simple and the mechanisms that enable coexistence and transition between the two versions must be standardized. Today, hundreds of millions of people are connected to the Internet and an equivalent number of hosts and devices implement the IP protocol. The passage in one day from IPv4 to IPv6 D, following the 2000 model would be impractical. Migration to new IP in such a short period of time would require a redefinition of a global IPv6 address plan, the installation of the protocol in each router and host, and modifying existing applications so they can stand it. An expensive process, no doubt, and that could cause unacceptable service interruptions. Simply put, this approach does not make sense, since many of the applications operating today are not designed to exploit the new features of IPv6, not even in need. There is no universal rule can be applied to transition from IPv4 to IPv6.

[Orlando]

In some cases, taken directly, without previous steps, the new IP will be the only solution. In Asia, for example, political authorities are pushing so strongly IPv6 support economic growth in the area, guaranteeing each citizen a sufficient number of IP addresses. It has also deployed a large-scale new IP architecture (as in the mobile home networking) to provide peer-to-peer and innovative services. But others have transition plans to ensure interoperability between IPv4 and IPv6 gradually as the transition evolves. It is obvious that ISPs and companies prefer to preserve the large investments in IPv4 networks. The mechanisms proposed by the group NGTrans allow IPv4 and IPv6 networks interconnect, as well as servers and clients based in both versions. Some studies predict that the transition period ends between 2030-2040, at some point in that decade, IPv4 networks should have disappeared completely.

[Larry ward]

At present, dual-stack approach is a fundamental mechanism to introduce IPv6 in the current IPv4 architectures and is expected to remain widely used for the foreseeable future. Its weakness is that it requires that each machine retains an IPv4 address, more and more scarce. So, as spreads IPv6, dual stack technique must be applied where specifically support the transition process, such as routers and servers. A server can support dual stack IPv4 only conventional customers, new customers only IPv6, and of course dual-stack clients.

[Twitter]

For those cases where there are not enough IPv4 addresses have defined a model combination of conversion and dual protocol stack, known as DSTM (Dual Stack Transition Mechanism). The second technique is based on tunneling, which allows, for example, connecting IPv6 clouds through a native IPv4 service through a tunnel. IPv6 packets are encapsulated by an edge router before being transported across an IPv4 network, to be encapsulated at the end of the receiving IPv6 network.