Looking for DHCP Relay SW supporting IPv4 Rapid-Commit (RFC 4039)

(First post ever on Reddit...)

I need to implement a DHCP Relay Agent that supports Rapid-Commit on IPv4 (Option 80).
I checked a few sw like ISC DHCP Relay, ISC KEA, https://github.com/42wim/dhcprelay, https://github.com/insomniacslk/dhcp and a few more but none support Option 80.

Open Source or not :)

Any ideas?

Thanks