DHCPv4 aka BOOTP is somewhat awkward. A DHCP client on an interface must receive DHCP packets to the broadcast address or to a unicast address. Apparently before it's been assigned to itself. Add this new API to allow external DHCP clients enable the DHCP client detect feature per interface. Type: improvement Change-Id: If55aac03f25a045496be483940e4f5e7e18885b9 Signed-off-by: Ole Troan <otroan@employees.org>