Log host identifier

[Narcis Garcia]

isc-dhcp-server is currently logging in my system:
DHCPDISCOVER from 11:22:33:44:55:66 via eth0
DHCPOFFER on 172.16.20.201 to 11:22:33:44:55:66 via eth0
DHCPREQUEST for 172.16.20.201 from 11:22:33:44:55:66 via eth0
DHCPACK on 172.16.20.201 to 11:22:33:44:55:66 via eth0

How can I make the service logs some name about that known client? (such
as "printer_1")

Thanks.