So hear me out, I realize it's not the best option, but there are a few reasons I can't get this to work through another way. I also have higher than 1 Gb internet, so want that to be available to the network.

 

1) No more spaces for NICs in the server.

That's about it. Now I could go with a second box to do this, but I'd like to do it this way.

 

I have created a separate VLAN in my managed witch. I have only exposed that VLAN to Unraid and the internet modem. Now when my plug in my laptop into the switch on that VLAN, I get a public IP, and everything works as intended.

 

In unraid I have added that same VLAN, but not assigned an IP to unraid on that VLAN (no services exposed). I pass through that VLAN to opnsense, and nothing I can do get's me an IP on the WAN in opnsense. I've confirmed it's the right interface being trunked to my modem, but no dice.

I do a pcap on the WAN interface while it's trying to get an address. I am seeing DHCP requests flying around, but nothing sticks. When I put the WAN in promiscious mode I am seeing packets captured that are originating from the internet, implying the forwarding and vlaning is working as intended.

I use the same method to trunk the VLAN for the internal network on opnsense, which works. Is unraid maybe blocking passing through public IPs?

Edited December 28, 20232 yr by bobo89

After hours of working on this it turns out the modem was misbehaving and not handing out an IP. After a reboot or 2 I got my address.