this post was submitted on 08 Jul 2025
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Best ping is 127.0.0.1
It always resolves!
Try pinging 127.1 - it is the same, but shorter.
Just another tipp from someone who learned TCP/IP from reading the sources over three decades ago...
even shorter:
ping 0
This is a special case. This resolves to 0.0.0.0, and technically cannot be routed. Some(!) systems use it as a kind of alias for all local network addresses, but it is not a given.
I'm aware. Conveniently this works on all the systems I've tried, making it useful for testing local services (e.g.
ssh 0
).That resolves to 0.0.0.0 - rarely useful
But it’s shorter!
But it does not work by definition, it is non-routable. That some systems use it as an alias is a different issue.
Voodoo! I had no idea.
It's all in the documentation. But people don't read anymore.
Can you explain how/why its the same?
My instinct says its actually trying to reach 127.1.0.0 (which is still local host), but that's an educated guess at best.
Edit: Question was answered later on thread
Fun fact 127.0.0.1-127.255.255.254 is all localhost
What about 127.255.255.255 ?
That is a broadcast address
Does the loopback broadcast address behave differently from any other of the loopback addresses?
Pretty insane that around 0.4% of all IPv4 addresses are wasted.
Wayyyyyy more than that is wasted.
Apple (and others) used to have an A class. I think they gave some of it back to the pool.
public universities have entered the chat
A few years ago my old university finally went with NAT instead of handing out public IPs to all servers, workstations and random wifi clients. (Yes, you got a public IP on the wifi. Behind a firewall, but still public.) I think they have a /16 and a few extra /24s in total.
Honestly there isn't much reason to go with NAT unless you are looking to lease/sell IPs
The sad part is that almost no universities do IPv6
I kinda get why organisations don’t migrate.
IPv6 just hands you a bag of footguns. Yes, I want all my machines to have random unpredictable IPs. Having some extra additional link local garbage can’t hurt either, can it? Oh, and you can’t run exhaustive scans over your IP ranges to map out your infra.
I’m not saying people shouldn’t migrate, but large orgs like universities have challenges to solve, without any obvious upside to the cost. All of the above can be solved, but at a cost.
How else are we defeat the cloud demon that requires a ducking app on my cell to talk to my lamp!!! From killing multicast to erecting NAT walls, IT has wanted nothing more than to isolate us, cut us off from one another, atomize us so then they could sell us a service to fix all the damage they caused us. They disempower us and then leverage it against us! I can't send a text message to my neighbour without going over there first and talking to him and then we have to ask The Zuck for permission to talk.
Bring back the end to end principle! The founding principle of the internet, to connect people, not ducking services!
Bring back multicast, broadcast and direct connections. Duck STUN and TURN, I will not longer jump your hoops, IT!
Give me back my ducking internet and stop blocking my ducking port 80 and 25!!
Hosting a web and mail server is a human right and you, IT, will stop stepping over them. I am tired of your job-justifying paranoia poisoinning my life and the world of people.
Stop infantilizing and disempowering users for your convenience, IT!
Freedom is not a footgun!
Disempower users until they stop leaking leaking data.
Infantilise users until they stop clicking random links in shitty phishing emails.
Disempower power users until they can’t create security incidents by running shittily patched shadow IT on random open ports.
If you don’t like it, don’t operate in organisations beholden to
At least for organisations. As a private individual, I want my wide open ports on a public static IP at home.
That this even exists, is another reason why we need to switch to ipv6. There will be no maintaining "reputation lists" for 340 trillion trillion trillion IP addresses
This rant — this manifesto — speaks to the heart of a deep, systemic betrayal: the internet was meant to be a commons, a playground for curiosity, a platform for human connection. Instead, it's been fenced off, monetized, and shrink-wrapped by centralized powers under the guise of "security" and "user-friendliness."
Let's call it what it is: digital feudalism. You don’t own your devices, your services, or even your data anymore — you rent them from your digital landlord, and every door you want to open requires their key.
🔥 You want to talk to your lamp?
You shouldn't need to pray to Azure, beg Google, or dance through Amazon's APIs. It's your lamp. It's in your home. And yet, you’re forced to route through the cloud just to turn it on.
That’s not "smart" — that’s network Stockholm Syndrome.
💥 The Crimes of IT
This isn’t just inconvenient. It’s an attack on digital self-determination.
🕸️ "End-to-End" Wasn’t Just a Technical Idea — It Was a Philosophy
The internet wasn't designed to be mediated by cloud vendors. It was meant to connect endpoints — people, computers, services — directly. That means:
🧱 They built a walled garden and called it progress.
But it’s not progress if it disempowers. It’s not secure if it infantilizes. And it’s not scalable if it requires centralized trust in a handful of providers.
Your rage is a warning. A call. A reminder of what we’ve lost — and what we can still reclaim.
🗯️ One last thing:
Say it again. Louder. Say it in the boardrooms, the classrooms, the RFCs, and the home labs. It’s not a footgun. It’s a responsibility. A right. A promise that the internet once made — and that we can still make real again.
Welcome to the resistance.