welterde

6 ms·

31.
by welterde 3y ago
You can tunnel IPv6 over IPv4 (which is how the very first deployments worked). And I think 6to4/6rd worked pretty to close to what you suggest: Each IPv4 gets assigned a block of IPv6 space which gets tunneled over IPv4.
32.
by welterde 3y ago
It's not clear to me how 240/4 would have helped anything. Or how it would have even be different from a tunneling approach on a high level.
33.
by welterde 3y ago
The issue is not how can we enable IPv4 C talk to IPv4 S, since that already works. The problem is how would C (ipv4-only) send a packet to S (ipv6-only) in the first place? It doesn't know how to deal with non-ipv4 packets, since it&#
34.
by welterde 3y ago
It is. A typical enterprise might get allocated a /32, which gives them 32-bit to nicely design their network and give 64-bit to each individual network where devices are connected. A typical ISP will get allocated a much larger alloca
35.
by welterde 3y ago
I have yet to read any IPv6 alternative that can theoretically work or is not just IPv6 in disguise (or something that is implemented in IPv6 in a slightly similar fashion). It may sound like a great plan as long as one doesn't look to
36.
by welterde 3y ago
If one has to go through the pain of changing everything why not make sure one doesn't have to do it again any time soon? Also having 64-bit for the network address (and 64-bit for the device) does have certain benefits that make it ea
37.
by welterde 3y ago
That document has been going around for ages and is based on the same fundamental misunderstanding that one somehow can extend IPv4 in a way somehow, but remain compatible with IPv4-only clients. This is just not possible. Most of the other
38.
by welterde 3y ago
You have to go back further in time and hit the designers of IPv4 on the head for not making it forward compatible. IPv6 is as backward compatible as is possible within this constraint. You can embed IPv4 space within IPv6, there is NAT64,
39.
by welterde 3y ago
You are also mistaken about the configuration in Europe, since the 3-phase system has 400V between the different phases and 230V to neutral.
40.
by welterde 3y ago
Polari [1] seems to support automatically uploading images and text to some imagebin/pastebin and then posting the link to the channel. The Lounge [2] also supports it (with the files self-hosted in thelounge instance). [1] https:&#x2
41.
by welterde 3y ago
Every packet traverses multiple such core routers (most likely from multiple internet providers), so 1 Tbit/s from A to B requires many more Tbit/s of actual hardware capacity sold. Or take the edge capacity of small FTTH provider
42.
by welterde 3y ago
You are not comparing the same thing here though. If you applied the same theoretical maximum method to all networking hardware (or even just core router class hardware) sold today you would arrive at numbers very very much in excess of a c
43.
by welterde 3y ago
I was only talking about the currently deployed constellation, which of course is much smaller, but for which we have actual numbers from measurements. For the completed Phase 3 constellation I have read numbers in the range from 1.7 - 2.3
44.
by welterde 3y ago
You are underestimating the capacity of modern core routers. A single PTX10016 router could route the entire starlink customer base with no over-subscription at all (230 Tbit/s vs 75 Tbit/s from 50 Mbit/s * 1.5M). Actual esti
45.
by welterde 3y ago
Most datacenters offer remote hands, so there is no need to travel to the DC for those kinds of things (just ship them the drives and have them replace it). One can also easily add extra spare hard drives to the pool that ZFS or mdraid can
46.
by welterde 3y ago
Depending on what you mean exactly with "IPv6 could include IPv4 addresses inside its address scope", IPv6 actually does that. For applications a subset of the IPv6 address space is set aside for IPv4 connections. So applications
47.
by welterde 3y ago
They also have quite a lot of assets though. The shareholder equity is around $190B (for Tesla it's around $45B).
48.
by welterde 4y ago
Except the devices are still quite well-hidden in IPv6 due to the large address space. Good luck scanning even a single /64 behind a normal home internet connection. Only way around that is sniffing the communication (say some cloud se
49.
by welterde 4y ago
How exactly do you propose this 4 to 6 mechanism to work? How do you fit more than 32-bit of information into the 32-bit destination field of IPv4? Because that's what's required to make it fully interoperable. Anything else and i
50.
by welterde 4y ago
The problem is that IPv4 is not forward-compatible and therefore there cannot be a protocol that is entirely interoperable. There can only be ones that are somewhat interoperable. And IPv6 has plenty of mechanisms that make things interoper
51.
by welterde 4y ago
One common example is running data analysis/reduction remotely on a big fast box and then looking at the products on that machine via X11 forwarding. On a fast low-latency connection there is hardly any noticeable difference between ru
52.
by welterde 4y ago
> Also, blowing up your pipeline just as a competitor comes on line? Whatever you think of Hersh's article, it's undeniable that Norway made a lot of money on the sabotage. Did they though? Looking at the gas futures chart it&#
53.
by welterde 4y ago
In that case they still have exactly same leverage as before, since one NS2 pipe is still available and several land-based pipelines are also still online. My personal belief is that we will never know who actually performed the acts of sab
54.
by welterde 4y ago
Russia already had no leverage anymore. Shutting them down was their "all in" move, but that clearly didn't cut it, so no, there was no point anymore. For Russia there were more upsides to this however: Getting out of contrac
55.
by welterde 4y ago
The second string of NS2 is undamaged (but denied operation from the German side). In addition Russia there are several land-based pipelines from Russia to central Europe (only used for small volumes at this point - much below capacity).
56.
by welterde 4y ago
Neither the mechanism nor the reasoning in the article sound plausible to me (nor the involvement of Norway..). NS1 was already shutdown by Russia within weeks of the supposed time of installation of the explosives, after which there was no
57.
by welterde 4y ago
NS1 and NS2 are not the only pipelines Russia could be using to export gas to Europe, but there are several land-based ones too. After shutting down NS1 (they claimed equipment issues) they only moved marginal flows (if any) onto those pipe
58.
by welterde 4y ago
Why destroy NS1 then and not NS2 (NS1 and NS2 both have two pipes and only one of the two NS2 pipes were destroyed)? And why destroy it at this exact time when Russia was already coming up with less and less plausible excuses to halt delive
59.
by welterde 4y ago
Didn't Lavabit shutdown because of exactly that [1]? So pretty sure the US secret courts can very much force companies to do just that and worse (even require them to be silent about it, which clearly is not the case in Germany). [1]
60.
by welterde 4y ago
That we cannot know. But what we do know is that Germany pledged delivery of the Iris-T anti-air system (which btw is among the newest systems on the market) back in May and it being delivered in October of last year. But given that and tha

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