We don't talk about IPv5
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Everyone having a static IP is a privacy nightmare.
There's a reason the recommendation in the standard for ipv6 had to be amended (it whatever the mechanic was) so that generated local suffixes aren't static. Before that, we were essentially globally identifiable because just the second half of your v6 address was static.
publicly addressable does not mean publicly routable… your router would still not arbitrarily connect untrusted external devices to internal hosts
NAT has the property of a firewall only as an implementation detail. replacing NAT with an IPv6 firewall in the router is an upgrade in every conceivable way
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The one thing you can't do with IPv6 is yell the address across the room to the technician plugged into the switch trying to ping the node.
wrote on last edited by [email protected]no instead you yell the IP address and they spend 30min trying to debug why they can’t ping it or even get ICMP packets through and then you realise you yelled the private IP address and they were on the wrong side of the NAT
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excuse me all my addresses have had letters in them
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This is equipment that uses all statically addressed devices. And ignoring the fact that IPv6 is simply unsupported on most of them, there are duplicate machines that share programs. Regardless of IP version you need NAT anyway if you want to be able to reach each of the duplicates from the plant network.
there are duplicate machines that share programs
yes.. that’s why every machine has its own IP address… so that they can both use the same port and you don’t have to connect to crazy bullshit like https://myhomerouter.example.com:8443/
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Good luck trying to find industrial stuff that supports IPv6, hell most of it is still serial.
I have legit heard that serial is security mechanism because it cannot communicate long distance like ethernet.
Of course you can do IPv6 magic that hides IPv6 from the end device, but nobody understands how that magic works.
Of course you can do IPv6 magic that hides IPv6 from the end device, but nobody understands how that magic works.
it’s not magic… it’s a firewall, and it works pretty much exactly the same as a NAT: a whitelist of IP and port combinations
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Define "widely".
According to Google 46.09% of their traffic is IPv6 and most servers support it. It's mostly large ISPs dragging their feet.
I've never seen functional ipv6 except at university, and I would only consider gci large in terms of coverage area and price.
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They kept talking it was because address exaustion, and IANA sold all the remaining blocks they had...
I tested it at the time. Ran nmap ping scan across a block all night with zero results. IANA sold the internet
many “unused” IP addresses are unused because they’re kinda like having spare parts: if you’re planning on extending your network in the futures, your IP block kinda should reflect your end state (ie the parts you need over time to replace or “build” new hosts)
or for blue/green deployments where it’s likely that at least half the IP range will be used in terms of process, but unused most of the time in terms of reachability
and then there’s weird things with splitting up IP blocks into subnets with a division of 3 (the minimum needed for dealing with net splits etc) - eg across availability zones… there are always “waste” IPs because you can’t divide multiples of 8 cleanly into 3
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Imagine using ipv6
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Realistically no organization has so many endpoints that they need IPv6 on their internal networks. There's no reason to deal with more complicated addressing schemes except on the public Internet. Only the border devices should be using IPv6.
Hopefully if an organization has remote endpoints which are connecting to the internal network over the Internet, they are doing that through a VPN and can still just be assigned IPv4 addresses on dedicated VLANs when they connect.
you sir/maam have not seen the netflix talk on using IPv6 for their full internal stack because of inefficiencies allocating IPv4 ranges i’m guessing
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publicly addressable does not mean publicly routable… your router would still not arbitrarily connect untrusted external devices to internal hosts
NAT has the property of a firewall only as an implementation detail. replacing NAT with an IPv6 firewall in the router is an upgrade in every conceivable way
wrote on last edited by [email protected]I'm aware of that, and didn't say otherwise?
My comment wasn't even ipv6 specific, quite the opposite. The comment I was replying to also wasn't, and the implication that things would be better if everyone had a fixed IP(v4) was actually the specific privacy nightmare scenario I wanted to emphasize. That is the literal worst case of all.
Things can be mitigated somewhat with IPv6, but also only to a degree. Here you'd (usually) have a static prefix and not IP. You then need to use the randomized suffix generation (on a host level, or in DHCPv6 if you're using that), and not all OS so this by default, but I think Windows does these days. Advertising data collectors, which means basically every web site, could just assume that your prefix is stable and the information they gain if they happen to be correct it's... uncomfortable.
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I'm aware of that, and didn't say otherwise?
My comment wasn't even ipv6 specific, quite the opposite. The comment I was replying to also wasn't, and the implication that things would be better if everyone had a fixed IP(v4) was actually the specific privacy nightmare scenario I wanted to emphasize. That is the literal worst case of all.
Things can be mitigated somewhat with IPv6, but also only to a degree. Here you'd (usually) have a static prefix and not IP. You then need to use the randomized suffix generation (on a host level, or in DHCPv6 if you're using that), and not all OS so this by default, but I think Windows does these days. Advertising data collectors, which means basically every web site, could just assume that your prefix is stable and the information they gain if they happen to be correct it's... uncomfortable.
ah! sorry i misread/misunderstood privacy to mean security in your comment
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It does not have less eyes on and it's 50% of Google traffic.
Think they mean local networks.
If an IT department carefully curates IPv4 but ignores IPv6, then a rogue actor can set up a parallel IPv6 network largely without being noticed.
IPv6 can be managed, just that it is a blindside for a lot of these departments.
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Ipv6 took awhile for me to understand. One of the biggest hurdles was how is it secure without NAT.
Can you share more details please?
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Ipv6 is broken for those that want control over their home networks thanks to Google and terribly written RFCs.
All that was needed was an extra byte or two of address space, but no, some high and mighty evangelicals in their ivory towers built something that few people understand 30 years later. Their die hard fans are sure that this will be the year of ipv6. The Year of Linux on the Desktop will come 10 years before the year of ipv6.
Ipv6 is broken for those that want control over their home networks
I don't see how? Works great for my home network.
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bro just add another octet to the end of ipv4. That goes from 4 billion to a trillion and will most definitely outlast modern electronics and capitalism
wrote on last edited by [email protected][This comment has been deleted by an automated system]
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Also for home network I don’t won’t my IOT to have a real IP to the Internet. Using IPv4 NAT you can have a bit of safety by obscurity
wrote on last edited by [email protected]I don’t won’t my IOT to have a real IP to the Internet
Why not? What's the difference to them having a nat ipv4?
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It looks daft now with a little hindsight, but we're kind of still in the foresight stage for the overall life of IPv6.
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fun fact, the RFC introducing NAT calls it a "short-term solution"
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Ipv6 is broken for those that want control over their home networks thanks to Google and terribly written RFCs.
All that was needed was an extra byte or two of address space, but no, some high and mighty evangelicals in their ivory towers built something that few people understand 30 years later. Their die hard fans are sure that this will be the year of ipv6. The Year of Linux on the Desktop will come 10 years before the year of ipv6.
What did Google do? Just curious as I'm not into home networking
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Ipv6 is broken for those that want control over their home networks thanks to Google and terribly written RFCs.
All that was needed was an extra byte or two of address space, but no, some high and mighty evangelicals in their ivory towers built something that few people understand 30 years later. Their die hard fans are sure that this will be the year of ipv6. The Year of Linux on the Desktop will come 10 years before the year of ipv6.
Broken how? What parts are not commonly understood?
