I've had some of my browser bookmarks since 2022.
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I take my shitposts very seriously.
Highguard will permanently shut down on March 12th.
(SOLVED) I need help with networking for VirtualBox guests running on Windows hosts.
(SOLVED) I need help with networking for VirtualBox guests running on Windows hosts. - Lemmy.World
I’ve found the solution, and it’s exactly as stupid and obvious as I was expecting. The classroom computers were deployed using Clonezilla from an image that had the VirtualBox VM pre-configured. As a result of this, every VM had the same MAC address, which probably caused a lot of ARP collisions, since all the hosts and VMs were essentially on the same broadcast domain. The solution was to simply randomize each VM’s MAC address. Thanks for the suggestions, but it was caused by my own oversight in the end. — I know this isn’t “selfhosting” as most people imagine it, but it is about hosting services on own hardware, hence why I’m posting in this community. I’m supposed to help a teacher set up a networking exercise where pairs of computers are connected directly on a crossover cable and can access services (echo, HTTP, SSH, FTP) on each other. Every computer is identical: Windows 10 host, one VirtualBox VM running Linux Mint with a bridged adapter in promiscuous mode. Each host and VM has its own static link-local IP address. The problem is, the VMs can’t talk to each other, and I don’t know why. From one VM, I can ping itself, its host, and the remote host, but not the remote VM. Each host can ping itself, the local VM, the remote host, but not the remote VM. I’ve tried connecting both hosts to a layer-2 switch, with the same result. Can someone point me at the one thing that I’m obviously doing wrong? (edit) I’ve also tried to set the default gateway to the host’s, remote host’s, and remote VM’s address, but nothing changed. [https://lemmy.world/pictrs/image/29119389-18af-4b95-9019-6b44902c0460.png] — Running Linux on metal isn’t an option. In the past, the classroom computers used to dual boot Windows and Ubuntu, but the Windows install got so bloated (the software too, not just Windows) that it needs the full SSD.
Factorio's Linux-native adventures (FFF #408, 2024-04-26)
It's 1am and one of my NAS hard drives is doing the death rattle.
Story from the 70s/80s about recovering a Unix system after `rm -rf /`
Story from the 70s/80s about recovering a Unix system after `rm -rf /` - Lemmy.World
Somebody accidentally deleted most of the system. There were no executables for any shells, text editors, or utilities. All they had was a single terminal that was still logged in as root. I think they had to manually type in some executable’s machine code and echo it into a file.
ELI5: what is a quantum state?
ELI5: what is a quantum state? - Lemmy.World
I’ve been reading a lot about massive stellar objects, degenerate matter, and how the Pauli exclusion principle works at that scale. One thing I don’t understand is what it means for two particles to occupy the same quantum state, or what a quantum state really is. My background in computers probably isn’t helping either. When I think of what “state” means, I imagine a class or a structure. It has a spin field, an energy_level field, and whatever else is required by the model. Two such instances would be indistinguishable if all of their properties were equal. Is this in any way relevant to what a quantum state is, or should I completely abandon this idea? How many properties does it take to describe, for example, an electron? What kind of precision does it take to tell whether the two states are identical? Is it even possible to explain it in an intuitive manner?
If you can build logic gates, you can build a circuit. If you can visualize its state, someone will inevitably play Bad Apple on it.
