dbtng

I am officially tired of seeing this article. I’ve blocked half a dozen people/bots reposting it. Doesn’t help. Perfectly innocent morons are reposting it too.

“The dumbest person you know is currently being told ‘You’re absolutely right!’ by ChatGPT.”

Well, for 35 years of my career I got by using the subnet cheat sheet. (https://www.aelius.com/njh/subnet_sheet.html)
And then I got passed over for a couple jobs and decided to get the CCNA.
These skills are requisite. Mandatory. You ain’t passing without demonstrating competency in the above dance of digits.
I can write that entire subnet chart out from scratch and first principles now.

When IPv6 was created, NAT technologies had not yet really developed yet. That development stretched out the utility of IPv4 and allowed it to be perfectly sufficient even today. Back then, you bought a public IP for every node on your network. Seems crazy now, because you can put an entire enterprise behind one IP.

IPv6 was created to allow that same provisioning concept of every node having a public IP. Well, we don’t really need that anymore. So we relegate IPv6 usage to machines like cell phones, but if a human has to utilize the address, we give em an IPv4.

Every cell phone and a shit-ton of IoT runs on IPv6. There’s a lot of phones out there. I bet you even have one, no? You are using IPv6 right now.

But if you really want to know why, first learn how to count in binary. It’s gonna be much harder than you expected.
Then learn how to count in hex. Boy, that’s fun.
Now convert them back and forth. Yay, what a good time!

This is a byte. Starting from the right, each place doubles. No, its not backwards, it just feels that way.
1111 1111
128 | 64 | 32 | 16 | 8 | 4 | 2 | 1
Add up the places. You can write any number from 0 to 255 this way.

You’ve seen that 255 number a lot. Maybe this dotted decimal notation will look familiar.
255.255.255.0
For this number (a subnet mask) each of the first three positions is maxed out, and zero is … zero.

Let’s write it in binary.
1111 1111 . 1111 1111 . 1111 1111 . 0000 0000
Does your head hurt yet? It will.

Now let’s convert it to hex.
Ya you got it. It’s base-16 integers. So you hit 10 and start counting in alpha.
0 0
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 A
11 B
12 C
13 D
14 E
15 F

This is a nibble. It’s half a byte. Ya, that’s a little funny some nerd farted out one day.
1 1 1 1
8 | 4 | 2 | 1
The max value of a nibble is … 15.
And 15 is … F

Split the byte into nibbles. Convert the two nibbles to hex.
1 1 1 1 1 1 1 1
(15) (15)
FF

So let’s do the whole subnet mask.
255.255.255.0
1111 1111 . 1111 1111 . 1111 1111 . 0000 0000
(15) (15) . (15) (15) . (15) (15) . (0) (0)
FF:FF:FF:00

And that, my friend, is some of the very simplest hex math you are likely to see.
In order to convert it from a number you understand, you have to run through binary, chop it in half, and recreate it as hex.
It gets much more complex than this, and that’s just basic numerical manipulation.

This is already too long, and I haven’t even written an IPv6 number yet.
We are just managing single digits here.

Why don’t people like IPv6? Well, its hard.

LOL. Thanks! :]
It wasn’t that tall. Only about a month. But it was a lot.
It’s been a month since my bro and his gal came over for BBQ. I think that’s what the mold was eating.

I washed my dishes! Life has been grim lately. They had stacked up. Kitchen is clean now. And maybe I feel a bit better.

Mostly I hear about Spain’s issues with migrant boats and folks are outraged. It sounds pretty rough.
So, I looked that up. No recent articles. Instead I see this:

Spain approves plan to give around 500,000 undocumented migrants legal status
https://www.bbc.com/news/articles/cy511nln2xvo

Bad girls are fun. Fallen angels are even more fun.

We want to ruin your life too.

Well, it’s really more than that.
Due to the nature of Lemmy, where all the data is public in lemvotes, I’ve come to consider a downvote a personal fuk-u, signed from me.
And sometimes I absolutely do want to deliver that direct message to another user, and so I do use downvotes. I do so fully aware that the person I’m judging may judge me in return.

O RYL? :]
What distro would you recommend?

What do you think should be done about unbelievers?
After all, those who have strayed from the one true path must be dealt with…

I started a thread about lemvotes some time back.
Several people went to look up their own post histories, and one guy offered the most unique insight.
Apparently in this Lemmy client on his phone, he was clicking a button to make posts ‘go away’ after he read them.
Well after looking up his own vote history, this guy realized he’s been downvoting everything he reads, all the time. That was not a ‘go away’ button.
After reading this guy’s confused bullshit with the voting buttons, I came to realize that there are innumerable reasons for why people vote, and it may not at all be what you think.