How do i start kea-dhcp server with multiple interfaces when first interface in the "interface" list is down

I am very new to kea-dhcp. I am trying to use kea-dhcp 2.0.1 version. below is my interface configuration mentioned in "dhcp.conf" "Dhcp4": { "interfaces-config": { "interfaces":[ "eth1", "eth2" ], "dhcp-socket-type" : "raw" }, When i try to start dhcp server it gives below error 058 ERROR [kea-dhcp4.dhcp4/37797.139924860343616] DHCP4_PARSER_FAIL failed to create or run parser for configuration element interfaces-config: Failed to select interface: interface 'eth1' doesn't exist in the system (/tmp/kea-dhcp.conf:1:49) (/tmp/kea-dhcp.conf:1:34) By the time i start dhcp server "eth1" did not get created, "eth2" interace is up and has valid IP but dhcp server failed to start since 1st interface mentioned in the "interface-config" is not created. How can i resolve this problem? Is there any option where dhcp server checks all interfaces mentiond and try to start and listen on interfaces which are created and UP?