Doing this from my phone so forgive any formatting issues, but you did tag and allow the vlan on the trunk/uplink going to opnsense right? I only ask as I've forgotten myself more then once and had this very issue.
Edit: Disregard I read part of the post as on opnsense not to, my bad.
Edit: Disregard I read part of the post as on opnsense not to, my bad.