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I switched it to allow "This Firewall" and everything is now working.
Thank You!!!

I recently setup a Guest netowork and that went fine and it's working great. I decided to create an IoT network to isolate some smart devices and since it really is the exact same thing as my guest network I just mirrored my setup. However the IoT network cannot get an IP from the DHCP server. If I assign a static IP I don't have internet and I can't ping the interface. I tried creating another VLAN but this time I did the firewall rules from scratch and that also didn't work and ahd the same issue.
I am at a loss since it appears everything is configured correctly.
I attached my settings if someone can take a look and let me know what I could possible be missing.

Port 1 is trunked to my Opnsense Router
Port 2 is trunked to my AP
Port 13 is untagged and PVID set to 40
Port 24 is trunked to another switch

My Guest VLAN setup is exactly the same minus port 13

Hey, thanks for the post. So I verified everything you wrote and mine did match. So I decided to do a reboot of my router and switch and my clients started getting DHCP so everything is now working.  Funny thing is I did try before this just not at the same time.
Anyway I really appreciate your time!

So right now I only have the one VLAN setup as I'm new to this I wanted to take is slow one at a time.
I do have the OPNSense untagged on VLAN 1 and Tagged on VLAN 20. I'll try changing VLAN one to tagged

Thanks for the help

I'm new to OPNsense and one of the main reason I switched to it is for VLANS. I do virtual teaching and I have my students log into a physical PC in my home office and I want to make sure they cannot access anything else on my network.
Currently my setup is
Lan 192.168.1.x
Vlan 20 - 192.168.20.x

I do have DHCP enabled on VLAN20 with a pool range from 192.168.20.50 - 192.168.20.100
I'm using a NetGear managed switch and have the VLAN configured on there for 20 as well as the PVID.

I set up a firewall rule to allow all just to make sure everything was working before I starting cutting off access. My issue is, the PCS connected to VLAN 20 are not getting an IP from the DHCP. If I try and do an ipconfig /renew I get an error that it can't access the DHCP.

Is there a firewall rule that I need to allow access to the DHCP?