IPv6 and IPv4
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Fréddoo
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Nico le Vosgien Posted messages 1580 Status Contributor -
Nico le Vosgien Posted messages 1580 Status Contributor -
Hello,
I've had a question on my mind for a while...
I often read in articles that the transition from IPv4 to IPv6 will be problematic for people with quite old operating systems (which therefore do not support IPv6).
Does this mean that there will be IPv6 everywhere... even in LANs? What's the point? Why not keep IPv4 for LANs and IPv6 for WANs?
Thank you for your answers :)
Configuration: Windows 7 / Firefox 3.6.13
I've had a question on my mind for a while...
I often read in articles that the transition from IPv4 to IPv6 will be problematic for people with quite old operating systems (which therefore do not support IPv6).
Does this mean that there will be IPv6 everywhere... even in LANs? What's the point? Why not keep IPv4 for LANs and IPv6 for WANs?
Thank you for your answers :)
Configuration: Windows 7 / Firefox 3.6.13
5 answers
Hello,
To answer your question: yes, the goal is for everything that currently communicates via IPv4 to do so via IPv6. In other words, in some time (and we can currently assume it will take a while!), IPv4 will have disappeared or will only exist in some small, more or less isolated pockets, similar to how we still find X25 today...
The main reason is that IPv6 is not 'compatible' with IPv4. Transitioning from one to the other is therefore quite complex.
To facilitate the transition/migration, operators and manufacturers have implemented, are in the process of implementing, or will put in place complicated systems... :)
The first major phase that will happen quite soon is dual stack: your PC will need to support the simultaneous management of IPv4 and IPv6. At the same time, websites will do the same. Your PC will then 'look for' the site in IPv6 when possible, otherwise in IPv4.
The second phase is shaping up to be the most critical: when regional RIRs no longer have IPv4 addresses to allocate (and there will be no possibility of purchasing them on the 'black market'!!!), you can imagine that a website will only be accessible via IPv6. Similarly, when ISPs can no longer source IPv4, they will only allocate IPv6.
For sites that are only available in IPv6, it will probably be mandatory to have IPv6 since transitioning from IPv4 to IPv6 is difficult to implement and does not allow all protocols to function.
For users who are only on IPv6, ISPs will probably implement 'super NATs' that will allow you to access content that remains in IPv4.
To answer your question: yes, the goal is for everything that currently communicates via IPv4 to do so via IPv6. In other words, in some time (and we can currently assume it will take a while!), IPv4 will have disappeared or will only exist in some small, more or less isolated pockets, similar to how we still find X25 today...
The main reason is that IPv6 is not 'compatible' with IPv4. Transitioning from one to the other is therefore quite complex.
To facilitate the transition/migration, operators and manufacturers have implemented, are in the process of implementing, or will put in place complicated systems... :)
The first major phase that will happen quite soon is dual stack: your PC will need to support the simultaneous management of IPv4 and IPv6. At the same time, websites will do the same. Your PC will then 'look for' the site in IPv6 when possible, otherwise in IPv4.
The second phase is shaping up to be the most critical: when regional RIRs no longer have IPv4 addresses to allocate (and there will be no possibility of purchasing them on the 'black market'!!!), you can imagine that a website will only be accessible via IPv6. Similarly, when ISPs can no longer source IPv4, they will only allocate IPv6.
For sites that are only available in IPv6, it will probably be mandatory to have IPv6 since transitioning from IPv4 to IPv6 is difficult to implement and does not allow all protocols to function.
For users who are only on IPv6, ISPs will probably implement 'super NATs' that will allow you to access content that remains in IPv4.
Hello,
This is not my specialty, but
In my opinion, it's because the translation between IPv6 and IPv4 is far from obvious, and it seems that the stability issues already observed in IPv6 are indeed due to coexistence with IPv4.
--
Never forget that a forum is a public place, BE CAREFUL. @Save the Earth! It's the only planet where we find chocolate!
This is not my specialty, but
In my opinion, it's because the translation between IPv6 and IPv4 is far from obvious, and it seems that the stability issues already observed in IPv6 are indeed due to coexistence with IPv4.
--
Never forget that a forum is a public place, BE CAREFUL. @Save the Earth! It's the only planet where we find chocolate!
IPv6:
https://fr.wikipedia.org/wiki/IPv6
IPv4:
https://fr.wikipedia.org/wiki/IPv4
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HADOPI: "A huge, costly spam machine, paid for by taxpayers"
This has been the case since yesterday.
It’s "only" the IANA that made this announcement: that means there are no more reserves in stock.
Now, each "regional" organization will have to make do with what it has.
Nevertheless, as I mentioned earlier, there are still quite a few addresses that have been allocated but unused: we can therefore assume that these probably have a "golden" future.... :)
It also seems that the management of addresses assigned a long time ago, some of which are no longer in use, is not really organized, and there may therefore be ranges of addresses that could be reused without anyone knowing.
At least according to an article.
As for the use of old ranges that had been dormant until now, I don't really see how that could go unnoticed: the Internet routing table is perfectly known and it's entirely possible to see if new blocks appear and who announces them.
The concern is more about the market value of these blocks and the sleight of hand that could result from it, while logic, common sense, and fairness would designate the IANA as legitimate to reallocate them.
Did I write that?
I wrote the opposite.
I meant to say there are no more ranges available (implied at IANA since they made the announcement yesterday). Of course, there are those who requested them without wanting them for themselves, we agree on that.
Of course, the routing table is known, but if a block was assigned some time ago, but is no longer used (regardless of the reason), it seems there isn't really any organization to check if that's really the case, for how long, and to reassign it.
But I can't find any information on that.