Thanks it worked. I was wrong about IPv6. My switch programming has me entering the 5 colon MAC address I believe as the client ID and the 2 period MAC Address as the hardware address. OPNsense only needs the 5 colon MAC address in the hardware address with a blank client id. (one should not be working on this at 3 AM, I guess). I entered both as noted above. If this can be passed to your development team it may help others.
PS I have updated to OPNsense 25.1.6_4-amd64 and entering that data is still possible, if that helps with the problem
PS I have updated to OPNsense 25.1.6_4-amd64 and entering that data is still possible, if that helps with the problem