[REQUEST][DHCPv6] manualy specify mac-address for DUID generation

Guys PLEASE, can you implement the option to manually select mac address used for DUID generation? Because WAN mac address and DUID mac address may not be same.
For example, customer have RB2011iLS as router, uplink is ether1 (not sfp1). DHCPv4 request came from ether1 MAC, DHCPv6 request came from sfp1 MAC. Then it is not possible to pair both assignments in the DHCP server to identify customer.

Thanks, Michal

It sounds like you’re not supposed to do what you’re trying to:

Instead, RFC 4361 says that DHCPv4 clients should use the same DUID as client id and you can pair DHCPv4 and DHCPv6 clients together this way.

That was quick:

What’s new in 6.41rc23 (2017-Sep-04 09:07):

*) dhcpv4-client - allow to use DUID for client ID;