Changing Mullvad server at router level

Reddit is becoming increasingly more and more hostile to VPN connections to the point where I often get the "whoa pardner" error message and have to try 4-5 different VPN servers on my desktop or phone before I finally get one to work with Reddit. Same thing sometimes with Google/YT, it keeps asking me to prove I am not a bot and a bit of experimentation with the servers gets me through.

This makes me wonder, is it as easy to switch my Mullvad server on OPNsense? I get the sense from the YT videos I have watched, I have to effectively setup an entry for every Mullvad router as separate instance on my OPNsense' VPN WireGuard settings and toggle which instance is being used at the router level?
I know I can technically have Mullvad on my router to hide all my traffic and then on all my devices that I use Reddit on, I can additionally have Mullvad on them too and play with the servers I am connected to on my device specifically until I find one that works but I am curious what the workflow is if I choose to do all my Mullvad related configs at the router level.

Making custom block?

I have a love-hate relationship with Reddit. On one hand, I can't deny that certain subreddits are useful as someone in tech, but I also can't deny that certain subs are just a time-sink and some subs are just toxic (looking at you AITA). I can often prevent myself from browsing the time-sink/toxic ones but sometimes I lose myself in them and I am in search of a way to block them via Mullvad at my router. Obviously a DNS-block won't work if I want to block reddit.com (the home page) and certain specific subreddits but leave any other tech related subreddits open for me to read so the next best thing I assume is some kind of firewall? But I don't know if such a firewall exists that can basically start doing regex on a URL to see if it should be accessible from within the network? Which makes me wonder if I can create my own firewall but I don't even know the first step, as in would this be something that integrates with OPNsense, or a stand-alone program I have to create myself? I know Python, Java and have some basic knowledge of C++ but don't even know if those are the language I need to know to create such a filter or if the filter I am looking for is even possible? Any and all pointers welcome.

I currently have a Netgear R6700 - Nighthawk AC1750 router that has reached end of service and am looking for a replacement.

When I set up the router, I had issues with some of my devices not connecting to either WiFi 6 or the 5 GHz band (I can’t remember which was the issue) so I had to set up a guest network for those devices to live on.

I would like, if possible, to have one network that everything in my house can connect to, but that’s a preference not a necessity. Are modern routers fully backwards compatible with older devices?

I’d also like something with a relatively long life ahead of it (though security is paramount and I’d rather have a secure router that I have to replace sooner over an insecure one that lives longer).

My house is just over 1000 square feet so coverage area doesn’t need to be huge. I do stream a lot of games to my laptop via Moonlight though, so being able to continue to do that without lag/hiccups is a necessity for me.

Let me know your recommendations and avoids, as well as any advice you have.

I noticed today that there are a large number of devices on my home network, all claiming to be ethernet connections. They kind of claimed all free IP addresses from x.x.x.63-253. They are not all on from what I have seen (and they are currently almost all off). Normally, my network should have only a handful of ethernet devices, which are my Fedora desktop, my Proxmox host, my OpenMediaVault VM on Proxmox machine running 24/7, and then the occassional VM I boot up as needed. I searched the occasional MAC address of one of these devices, and nothing came up. Does anyone know what the culprit of this would be or what I could use to diagnose it?

Screenshot of some of the weird devices listed (I blacked out my known devices)

Edit: It appears to be solved. I believe my OpenMediaVault VM was acting up/having issues and was gobbling up IP addresses. The issue has not occurred since restarting my Proxmox host.

We're excited to be closing on our first house in several week! It's a newer build but doesn't have ethernet run so in the nearish term future I'd like to run cat5 cat6 to some key locations:

• main level for TV and a mesh wifi node
• second floor offices (PCs) and entertainment area for consoles/second TV

Any really good guides that others have followed? So far the guides I've found focus on switches and crimping cables rather than how to get a cable from Point A to Point B effectively without knocking more hole that necessary in the wall.

Edit: meant cat6, thanks for the note.

I moved into a new apartment and was surprised to see that all my rooms have CAT 5 Ethernet ports in the wall. However, cue my disappoint when I try to naively plug my router and machine in two separate ports to find that the ports don't actually work. After searching various forums, I found that I have to:

1. Locate the panel where all the ethernet ports connect
2. Wire them to an ethernet switch.

I found the panel but all the wires look like this:

https://i.imgur.com/Qzm72g0.jpg

I'm not sure what I need to do from here to plugging into my network switch. Any guides or advice would be extremely helpful. I don't need every port connected to the switch, only one or two. None of these look labelled so I might have a difficult time isolating which cable runs where.

And about the network switch... Any qualms about using an old router that has the AP turned off?