The DHCPD service cannot be enabled. The system prompts: I want to declare a NIC (because I have two NICS ).

The DHCPD service cannot be enabled, and the system prompts: I want to declare a NIC (because I have two NICS). I don't know how to do this-Linux Enterprise Application-Linux server application information. Here is the details. Redhat 9 I have configured the dhcp service, but it cannot run. The prompt is: I want to declare which Nic I am connecting to (because I have installed two NICs on the local machine, only one is activated)
Where can I declare it? Should I add some statements on dhcpd. conf?

My/etc/dhcpd. conf source code

Ddns-update-style interim;
Ignore client-updates;
Default-lease-time 21600;
Max-lease-time 43200;
Option routers 192.168.1.254;
Option broadcast-address 192.168.1.255;
Option subnet-mask limit 255.0;
Option domain-name "example.com ";
Option domain-name-servers 192.168.1.1
Option time-offset-18000;

Subnet 192.168.1.0 netmask 255.255.255.0 {
Range 192.168.1.10 192.168.1.200
}


My/etc/sysconfig/dhcpd source code
DHCPDARGS = "eth1"

Which file is wrong? Where is eth1 to be declared? How to add
Thanks