IPv6 Addresses Explained

In this video I explain ipv6

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[jonathanrealman]

I love that you are slowly making the "So you started working in IT and didn't know what you get your self into" playlist.

[flynntaggart]

2000: ipv6 is the future!
2010: ipv6 is the future!
2020: ipv6 is the future!

[AHz]

ipv6 isnt gonna run out for a long time but man ipv4 addresses are so much easier to say/write

[No-ucfg]

In the future, the gray goo will stop after eating 40% of the world because they were using ipv6 instead of ipv8.

[jhoughjr]

future of the internet. been hearing that for like 20 years nearly

[NicholasHenkey]

IPV6, for when your botnet just isn't big enough

[James_Knott]

Vint Cerf, one of the inventors of TCP/IP never expected 32 bit addresses to be used in production. He only used it for demonstration purposes and expected the final product to have much longer addresses. However, IPv4 escaped into the real world and we've been stuck with it ever since.

[dozens]

Just as another point of reference for the shear scale of the ipv6 address space, every single transistor manufactured by humankind could be given an ipv6 address allocation *equal to the entire ipv4 address space* with plenty to spare.
5.6e+22
< 3.4e+38

[iristhepuppygirl]

really useful video. im revising for the CCNA and this video really helped me understand IPv6 which i was having troubles with before

[Andrew-jhbn]

Seeing some of the comments in this thread, I though I would post some other useful information.

A network interface will usually have 3 addresses assigned to it. There's link local, starting with fe80. This is only used to reach devices on the same lan.

Then there will be two global addresses, with one being marked "temporary." The temporary one will change from time to time and is used for all outgoing requests to the internet. This makes it harder for the outside world to know the topology of your lan. Use the one that isn't marked temporary if you want to reach it from another device.

If your internet service provider uses dynamic addressing, then even the address that isn't marked temporary can change. In IP v6 there is no NAT. This means that if your service provider gives you a new prefix (the first 64 bits of an address), then every device on your network will automatically configure the new address.

If you want addresses that you control, you could use something like ULA addresses. These are similar to the concept of a private address, but it's slightly different. When using ULA, devices could have up to five addresses: one link local, two addresses generated based on the isp prefix ( temporary and not temporary), and two generated from the ULA prefix (again, temporary and not temporary)

Link local addresses are kind of special. Each interface (or ethernet port/wifi card) is considered a different link domain. This means each interface gets it's own link local address, and it's possible that they are the same. That is why they add a link identifier, something like %a8.

Regarding concerns about ssh being open to the internet, yes, it is possible that the device would accept incoming ssh sessions. This all depends on the firewall settings of your router and the device. The current status quo tends to conflate the purposes of NAT and firewalls, but in reality you can have a firewall without NAT. And NAT alone does NOT mean a device is secured from the internet. many v6 routers will block incoming packets without established connections by default, but your mileage may vary.

[WillieMatthews]

That is a great video. Broke down the whole setup of IPV6 for me. I just kept ignoring it till this video showed up on my phone.

[overlisted]

"IPv6 is the future of the internet" literally the same was said back in the 90s, but not everyone is using ipv6 even to this day

[applemarkwantsvids]

These visual snippits into your brain are awesome... LOVE the Gentoo stuff, as you mastery and command of the subject matter you are speaking about at any given time is beyond impressive. Thank you for ALL that you do.

[enemyspotted]

I swear to god you’re carrying me through some subjects with these videos

[stephengnb]

This is why thumbnails are important. Out of all the videos in my search, this is the one I clicked on because of the big kitty and little kitty. I love me some kitties!

[vi_dn]

I love this channel. I learn so much stuff here without someone telling me to download some game or other.

[cogspace]

2:31 Actually, the name "hextets" comes from the fact that they are 16 bits each. Same reason for "octets", which are 8 bits.

[azuudaioh]

We now have more IPs than stars in the universe.

How far we've come.

[notreallyasloth]

Thank you so much for this video 🥰 ipv6 has been really confusing me recently and I tried watching a bunch of videos and tutorials but it still did not make sense until you highlighted the core thing that a lot were leaving out or just not even mentioning which is that ipv6 doesn’t need a nat so each device gets its own public ip. Which besides for the syntax changes is a huge difference. I’m so used to the router holding the only public ip on the internet with ipv4 so yeah anyway thank you I’m starting to understand this now.

[mmm]

My teachers didnt explain me this as good as you did in this video lmao