!fitness@lemmy.world might appreciate this

You and friend 1 have working setups. Friend 2 can’t seem to get their setup to work. So the problem has to be specific to friend 2’s machine or network.

To start at the very basics, when WG is disabled, what are friend 2’s DNS servers, as listed in “/etc/resolve.conf” (Linux) or in “ipconfig” on Windows. This can be an IPv4 or IPv6 address. Whatever it is, take note of it. Also try to ping it and make sure the ping is successful.

Then have friend 2 enable WG. Now try pinging the same DNS servers again. If this fails, you are one step closer to the problem. If this succeeds, then check to see if WG caused new DNS servers to replace the former ones.

One possibility is that friend 2’s home network also uses 192.168.8.X, and so the machine tries to reach the DNS servers by going through WG. But we need more details before making this conclusion.

You also said friend 2 can ping 9.9.9.9 (aka Quad9), but is this friend using Quad9 as their DNS server? If so, what exactly is observed when you say that “DNS doesn’t resolve”? Is this an error in a browser or the result from running “nslookup” in the command line?

IPv6 isn’t likely to be directly responsible for DNS resolution failures, but a misconfigured WG tunnel that causes an IPv6 DNS server to be blackholed is one way to create resolution failure. It may also just be red herring, and the issue is contained entirely to IPv4. I would not recommend turning off IPv6, because that’s almost always the wrong answer and sweeps the other problems under the rug.

It would help if you could recall what steps you did, a link to the instructions you followed, and what you’re currently observing. Otherwise, we’re all just guessing at what might be amiss.

I’ve been reading a lot of Soatok’s blog, so when I see software that claims to be privacy-oriented, my first thought is: secure against what?

And in a refreshing change of pace, CryptPad actually outlines their threat model and how the software features might widen certain threats plus how to avoid those pitfalls. I’m not a security expert, but it’s clear they paid at least some attention to assuring privacy, rather than just paying it lip-service. So we’re off to a good start.

I select hostnames drawn from the ordinal numerals of whatever language I happen to be trying to learn. Recently, it was Japanese so the first host was named “ichiro”, the second as “jiro”, the third as “saburo”.

Those are the romanized spellings of the original kanji characters: 一郎, 二郎, and 三郎. These aren’t the ordinal numbers per-se (eg first, second, third) but are an old way of assigning given names to male children. They literally mean “first son”, “second son”, “third son”.

Previously, I did French ordinal numbers, and the benefit of naming this way is that I can enumerate a countably infinite number of hosts lol

Movies would have people believe that the jets are there to shoot down the errant jet. During the Cold War, this was entirely plausible and did happen. But more commonly, when a fighter jet is sent to intercept an unknown aircraft – perhaps one that has entered restricted or prohibited airspace – it may be just to have eyes on the situation.

Airspace is huge. The vastness of the air is like the vastness of the sea. Sometimes it’s an advantage because there’s fewer things to hit. But on the flip side, if an aircraft needs assistance, there might not be anyone for many miles in any direction. As for what an assisting fighter jet can do, the first is to establish navigational accuracy. History has shown that airplanes can get lost, and sometimes unfortunately end up hitting mountains or running into known obstacles or weather. A second aircraft can confirm the first aircraft’s position, since two separate aircraft having navigational problems is exceptionally rare.

The next thing is having eyes on the outside of the aircraft. Things like a damaged engine on a jetliner aren’t visible to the pilots, but there’s a chance the passengers or cabin crew can look. But damage to a rudder is impossible to see from inside the aircraft; I’m not yet aware of a commercial aircraft equipped with a tail-viewing camera. Checking the condition of the landing gear is also valuable information, if a jetliner has taken damage but still aloft.

Finally, if it should come to it, an assisting aircraft can be the pilot’s eyes, if for some reason the pilots can no longer see out their windscreen. At this point, the flight may already be close to the end but it may help avoid additional casualties on the ground. I’m reminded of the flight where volcanic ash sandblasted the windshield, or when a cargo jet had a fire onboard which filled the cockpit with thick smoke.

To be clear, neither incident was aided by fighter jets, but having an external set of eyes to give directions would have made things a little bit easier for the pilots. Other aircraft besides fighter jets can provide assistance, such as any helicopters or private pilots in the area. But of course, fighter jets are on-standby and can get to a scene very fast.