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Thread: [i-programmer] There Really Are No More IPv4 Addresses Reply to Thread

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  Topic Review (Newest First)
11-18-2019 11:23 AM
Quote: Originally Posted by DNMock View Post
Hasn't this been known about for a long time and the solution already implemented for several years in the form of IPv6?
Yes, however the ISPs and other operators on the internet are being very slow to implement ipv6 network wide. Though many have been doing the transition for a few years now finally. Comcast has actually been one of the best ISPs with the transition by having all customer routers already enabled running dual ipv4 and ipv6.
Part of the problem is that even home networks need to be able to run ipv6 at the router at least, preferably as ipv6 across the whole home network but at the very least translate local ipv4 addresses to WAN ipv6. There are still many very old routers in service that simply dont support ipv6, and if the internet providers were to fully transition one day to routing entirely on the new standard it could very well cause a lot of people in a lot of countries to lose their internet access. Right now they run both ipv4 and ipv6 to allow the transition to happen. Some ISPs even run ipv6 entirely within their internal network, and only switch back to dual stacks towards the edge of the networks before they get to customer nodes. The eventual goal will be to get those customer nodes onto ipv6 entirely so that the whole network runs on only that.

Quote: Originally Posted by huzzug View Post
Wasn't NAT an alternative to this scenario to be implemented by the ISP or whoever regulates telecom in a country?
Also yes. There are some ISPs already, mostly local city owned projects, that have very few real IPv4 addresses and they do a carrier wide NAT to all their local customers. This presents a lot of problems though, as customers cannot host any server and it makes opening ports near impossible. This can cause issues with games and other services, but especially trying to host a server or even a VPN server on your router due to the double-NAT situation. So while this is already in use on a small scale, it is a very bad solution.
11-18-2019 07:09 AM
Mrzev Not gonna lie, but I thought it was already runny dry for the past 5 years or more.
11-17-2019 10:05 PM
Quote: Originally Posted by Omega X View Post
NAT is already heavily used. But it was not deemed as a long term solution due to the massive amount of new internet connected devices being made.
I think he means carrier grade NAT, to top it off the address range they can use for this is huge..... My ISP uses it too without IPv6 (fortunately if you ask them they will give public IP).
11-16-2019 08:22 AM
xJumper While Europe/Asia are using IPv6 extensively most U.S./Canadian ISPs still have giant blocks of IPv4 addresses, we created the internet and many of these companies got a hold of giant blocks of address space back in the day when they were handing it out like candy.

My ISP still provides everything in IPv4 and allows multiple PPPOE sessions with different IPv4 addresses, no shortage here.

While NAT is not how the internet was originally designed to work, it's provided a great deal of protection to a lot of people/things, if all of a sudden IPv6 went live tomorrow and the giant mess of things IoT is right now was publicly reachable you would see so much ownage in the cyberspace it wouldn't even be funny.
11-09-2019 12:51 PM
Thingamajig The transition to IPv6 will be fine. People are just fearmongering in order to profit from registering domains and sitting on them
11-09-2019 05:28 AM
Diffident I have ipv6 disabled in pfsense for WAN. There are different security protocols that need to be followed for ipv6, I'm afraid of opening a security hole. But it doesn't matter anyway, going to a ipv6 test site linked from Verizon says

Your DNS server (possibly run by your ISP) appears to have no access to the IPv6 Internet, or is not configured to use it. This may in the future restrict your ability to reach IPv6-only sites.
But that's a VPN, I'd have to test again when connected to Verizon.
11-08-2019 11:21 AM
Alex132 Also I have been on an IPv6 address sporadically before as part of a test that my ISP was doing, honestly wasn't that bad albeit some weird services did complain because they didn't understand the address.
11-07-2019 01:36 PM
skupples $5, and a business account most of the time down here.
11-07-2019 01:14 PM

Quote: Originally Posted by JackCY View Post
How many does an ISP need? None. They don't give them out to end customers for decades exactly because of this shortage and having to pay for them, so even if you can get it from them you gotta pay a hefty monthly fee to ISP just so you can have a public IP.
The ISP does not need public IPs they will simply connect to what ever provider/providers they are using, with what ever type of connections and network standards they are using. Public IPs would make some things easier for everyone that's for sure, but the amount of NAT everywhere and using private IPs is endless.

IPv6 is around for ages but so far no ISP etc. the big shots are bothering to use it so that we can move to a point where every device can have public IP, for free with no problems, no stupid NATs and other network blocks.

The transition if any is going on is painfully to borderline useless so far from an end user's point of view and experience.
Wrong. An ISP needs them TO give to customers. Do you have any idea how that works? Whenever your modem/router connects it gets one of these IP addresses. I think you're talking about static IP addresses. And IDK about everywhere but here they're like $5.

The ISP absolutely needs addresses and plenty of them are also using IPv6. Also, not every device needs a public address. In fact most of them don't. Every device behind a router doesn't have a public IP, nor do you want it to. That would leave huge attack vectors open.
11-05-2019 01:24 PM
1Kaz It's not dead yet... We've been predicting this for a long time.
This article is still a prediction. A doom saying all end nearing prediction, but a prediction none the less.
Let's see what happens, as it happens.
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