Can't get WAN IP on new install

[productivedisruption]

I'm switching over from an Omada router to OPNsense. I have it installed as a virtual machine with Proxmox. LAN seems to be working fine, but I can't get a WAN IP address.

I don't believe that my ISP requires that I provide them with the new mac address because I've switched routers in the past without issue, but I called just in case. They were not helpful. I asked if they were receiving my DHCP requests at all and was told that their supervisor told them the "*DPHC* is there if you see the signal".. and could not give me any information about any specific configs they'd require, etc. They said they did something that could help reset things but would not tell me what it is that they did. It did not help. I still don't even know if I should be using IPv4 or IPv6 because he didn't know that, either.

What I've tried:

• Spoofing the mac address with the one from my old router
• Turning on/off private IP addresses
• Turning on/off bogon IP addresses
• Overriding MTU
• Resetting modem and waiting 30 minutes
• Turning on/off Ipv6 DHCP

I ran a packet capture on the WAN port and the only thing I see is a bunch of DHCP requests being sent out. My modem has no errors. It logs a "DHCP non-critical field invalid in response" error every time it reboots, but it does that no matter what router I use.

There was one point for about ten minutes that I got it to come on a few days ago and everything was fine, but then the IP address was lost and I haven't been able to get it back. I'm not really sure what to do next/where to look to troubleshoot this further.

[cookiemonster]

You have chosen a wise option by virtualising for testing but it makes things more complicated. Chances are if you go baremetal, it will "just work". There are more layers to setup. The virtualisation networking stack needs to be made to get out of the way. That said if you had it working and then stopped, from your mention of a modem, it sounds like the WAN ip was lost for any number of reasons to do with the setup, and couldn't be renewed.
I'd start with dmesg for clues, from the OPN console.
Some more details would help. Is your modem in bridge mode; what's your WAN setup like to get an ip address, i.e. is it DHCP; what network is it in, etc. There is a lot that needs to be known to try to help.