qemu/kvm bridge and NAT networking

What is virbr0 ?
What is the default network ?
What is vnet0 ?
What is a NAT network?
What is a bridge network?

Let's try to understand what they mean and how to use them with our virt-manager virtual machines!

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[jankypox]

Can’t thank you enough for this. After reading half a dozen “guides” with spelling mistakes, inconsistencies, and just terrible explanations, destroying my system as many times and nearly a dozen Ubuntu reinstalls… THIS was the guide and explanation I needed all along! Simple, to the point, and with a good background of how, why, and what we are doing. Thank you again.

[andremotz]

This is the only and the ONLY true tutorial, to get bridging with QEMU/KVM running. Have done so successfully on a Manjaro-host. Thanks!

[TheBobFish]

Brother I spent 4+ hours troubleshooting with forums and google searches. Decided to try YouTube and your guide immediately solved my problem. Thank you so much.

[gtrklem]

I feel compelled to take a moment to thank you for this guide. Like most everyone else commenting, I'm truly grateful I found this video. After watching a handful of other videos (most at least twice as long as this) and reading a number of guides, it wasn't until I watched your guide that I was able to successfully setup a bridged connection for my VMs. My VMs are hosted on Debian 11, but this guide still worked perfectly. Only slight issue I had is that I access my Linux box via VNC/SSH tunnel, so when I deleted the ethernet connection, it took me out. Fortunately I was somewhat expecting this and had an extra keyboard and monitor on hand. I was back up and running moments later.
I look forward to watching more of your videos and have subscribed. Thanks again!

[kebabimpaler]

It's funny how much the "why" helps so much with the "how" in terms of trying to get your head around what's happening. Especially if you take a wrong turn / use a different tool but want to achieve the same outcome or have to troubleshoot things. Thank you.

[bangoutsblog]

Thank you so much! After a week of frustration I found this video and now I have all my VMs on my LAN.

[geozapata]

Thank you for this. Short, sweet, clear and to the point.

[ernstrenner]

Out of all of the tutorials I found lately, yours was the only one working. I now have bridged networking configured and working.
THANK YOU!

[ericmuijs]

Such a clear understanding, thank you! After five guides online I still could not find what I wanted, you helped me a lot.

[scriptingdad]

Can't thank you enough. I've gone threw multiple guides and all of them were missing parts. I think it was the fact the the original physical device needed to be removed. This was super straight to the point but chocked full of useful information. Amazing!

[Tannius]

Thank you for making this clear and easy. I bookmarked this so I can watch again when I forget how to do it.

[TheNets]

I love you. After A TON of resources, finally someone who teach everything properly.

[johnr]

Deleting the default ethernet adapter was the missing link in 2 days of trying, thanks. Well done.

[juandiego]

Thank you!!! You saved me. After reading lots of guides and having no sucess just came across your video, followed your instructions and it worked!!

[CuongHut]

How much can I say thank you this video. I was suffering to make my open5GS core connecting to my UERANSIM on my virtual machine. And you save my life. Thank you very very very much

[FlantisFroggu]

I appreciate the explanation at the beggining. I already knew all of this but in my search I found so many people confuse a nat with a bridge that it's hard to believe anyone unless they define it.

[snppls]

Huge thanks! I spent hours and hours trying to get this to work. Following your video I now have my bridge connection working.

[InfomercanteBrasil]

Thank you so much! After almost two days trying to make the bridge work in Virt-Manager, I discover in this video that it would only work with a wired network and that I will have to stop using Virt-Manager and start using VMWare! Thank you so much

[ScottMorgan]

Thanks! That was excellent and the easiest tutorial on YouTube that I've found. Well done!

[wandersonsilva-fxcs]

I want to thank you for your classes! Mr. Congratulations! Thank you very much