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Do You Need IPv4 Anymore?

80 点作者 DanAtC大约 1 年前

20 条评论

beAbU大约 1 年前
I recently moved to Ireland. Here I have Virgin Media fiber, and I was pretty upset to learn the router was very locked down, and I can&#x27;t even port forward.<p>I have a bunch of services that I host from home, and with my previous provider (and country) I had a static IP with all the associated DNS and DMZ stuff to make it work.<p>I was about 2 days into a VPN rabbit hole when I discovered that Virgin gives out IPV6 AND IPV4 IPs, and that the v6 ones are publically routable! I was able to access my hosted service by plugging in the server and going to it&#x27;s IPv6 address on my phone. Some quick Cloudflare IPV4 to IPV6 proxying later and I&#x27;m up and running as before. Can now access the service from any internet network (even IPV4 ones). No more DMZ, port forwarding, etc. Happy days.<p>So yes, I moved away from V4 in about an afternoon, no issues.<p>I&#x27;m not sure if the IP is static though. The server has a reserved V4 IP for internal stuff, I hope the router is clever enough to then keep the V6 one also static. With the address space being so large, I guess giving clients entire blocks of addresses that are static is perfectly fine?
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mastax大约 1 年前
Related question: I asked my ISP for IPv6 and they gave me a static assignment like this:<p><pre><code> WAN: A:B:C:D::1&#x2F;126 LAN: A:B:110::&#x2F;48 </code></pre> I tried to read up on this but am still confused. Why are they giving me WAN and LAN addresses? I thought the whole point of IPv6 is that you give your devices publicly routable IP addresses. If an address is publicly routable, what&#x27;s &quot;LAN&quot; about it? I haven&#x27;t been able to find a working configuration for Unifi, though their IPv6 support is like 20% implemented at best.<p>And no, the LAN subnet isn&#x27;t in the ULA or link-local space.
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move-on-by大约 1 年前
&gt; Since a lot of mobile networks (5G, 4G, etc.) in the world are IPv6-only, and have no IPv4, there’s luckily a solution for this already.<p>Ha! I have an iPhone 15 and when I switch to mobile I get an IPv4-only address! My mobile provider is Verizon. I assume results are going to vary drastically based on region. I feel there are a lot of assertions in this article without any real data to back them up. If it makes any difference, AS6167.
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jrm4大约 1 年前
To me this feels like &quot;stop driving that car and fly this plane instead!&quot;
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spurgu大约 1 年前
IPv4 will be around forever. It&#x27;ll just get more expensive.
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hitpointdrew大约 1 年前
No one will ever convince me that running a local IPv6 network is a good idea.<p>IPv6 from your ISP, fine, but once internal IPv6 is overly complex and unnecessary. Despite the claim to the contrary NAT is a feature, not bug.<p>The future for IPv6 is that Firewalls&#x2F;Routers will handle IPv6 for the public addressees, then NAT to internal IPv4&#x27;s.
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cjen大约 1 年前
I was surprised today to find that Spectrum doesn&#x27;t enable IPv6 by default. Only figured this out after way too long trying to ssh into my IPv6-only Hetzner instance.<p>Ended up just paying for an IPv4 address to avoid the hassle.<p>I don&#x27;t think this is &quot;the year of IPv6&quot; but it might be its decade.
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superkuh大约 1 年前
Yes. It&#x27;s a bit like, &quot;Do you need a car?&quot;. If you&#x27;re only going very popular places public transport might work. But to be able to surf the &#x27;net you need ipv4.
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M2Ys4U大约 1 年前
Half[0] of AWS&#x27;s services don&#x27;t work with IPv6, despite Amazon charging extortionate rents on IPv4 addresses.<p>So... yeah, for that reason I <i>do</i> need to keep using IPv4, at least until either 1) AWS gets its act together; or 2) my employer moves away from AWS (which is very unlikely).<p>[0] Hyperbole... but probably not <i>that</i> unrealistic.
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turnsout大约 1 年前
I run a server and have yet to adopt IPv6. My logic is: people can type in a URL and get to my site. Am I missing out on anything by continuing to pretend that IPv6 doesn&#x27;t exist?
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loeg大约 1 年前
My ISP is still IPv4 only, sadly. So, yep.
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mtmk大约 1 年前
Reminds me of the day when RIPE NCC announced that they had run out of IPv4 addresses. [1]<p>[1] <a href="https:&#x2F;&#x2F;www.ripe.net&#x2F;manage-ips-and-asns&#x2F;ipv4&#x2F;ipv4-run-out&#x2F;" rel="nofollow">https:&#x2F;&#x2F;www.ripe.net&#x2F;manage-ips-and-asns&#x2F;ipv4&#x2F;ipv4-run-out&#x2F;</a>
1vuio0pswjnm7大约 1 年前
No SNI:<p><a href="https:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20240411000150if_&#x2F;https:&#x2F;&#x2F;blog.daknob.net&#x2F;do-you-really-need-ipv4-anymore&#x2F;" rel="nofollow">https:&#x2F;&#x2F;web.archive.org&#x2F;web&#x2F;20240411000150if_&#x2F;https:&#x2F;&#x2F;blog.d...</a>
zhuzhu大约 1 年前
Can you tell Github about this?
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Am4TIfIsER0ppos大约 1 年前
Yes because 6 is garbage around here. 2+ minutes to establish a connection to some servers. The comparison with public transport in another comment is apt. The bus is only once an hour.
kkfx大约 1 年前
I do not need IPv4, BUT I need IPv6 with a global per host, without tricks to avoid my free use of hosts, just to keep the users &quot;a bit out of internet&quot;...
djha-skin大约 1 年前
I find IPv6 to be a very mobile centric technology. As a back-end developer and infrastructure engineer I don&#x27;t see the point of it. If I used IPv6 everywhere in my server room outsiders could see the topology of my internal Network. NAT isn&#x27;t an annoyance on the server side, it&#x27;s a requirement for security.<p>I have yet to meet an infrastructure engineer or even hear of one who switched to IPv6 on purpose because they thought it was better. They always switch because they have more than 65k servers or to support mobile better. I feel like the people in charge who say that we should all move to IPv6 are the same people that we should that say we should all move QUIC and for the same reason: mobile clients like it better. But it&#x27;s just not useful on the server side.
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m3kw9大约 1 年前
Glad the title wasn’t “IPV6 is all you need”
slotrans大约 1 年前
I can&#x27;t reach any IPv6 addresses from Comcast&#x2F;Xfinity soooooo...
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zhuzhu大约 1 年前
Can you tell github about this?