How to issue the same IP to two mac addresses in ISC DHCPd?

Question

Debian

Good afternoon!
There is ISC DHCPd version 4.2.2 on Debian.
There is one Ethernet network, and a wi-fi router, where the cable cannot be laid, wi-fi is a bridge to Ethernet.
DHCP server, perfectly gives IP either through cable or over the air.
But there was a problem, there is a laptop that you need when it does not work from the cable, but enters the wi-fi zone to give out the same IP as on the cable. It is logical that the poppy addresses on the map and on wi-fi are different. And routing, and accesses are tied to IP.
Reading the ISC DHCPd documentation, as I understand it, it is impossible to issue one IP to two macs, or is it still possible somehow?
I tried to contrive and specify another "host" in the configuration file, but then the address does not give out in general.

# CHEF-BOOK
  host CHEF-BOOK {
    hardware ethernet 00:75:A3:25:4F:A9;
    fixed-address 10.254.77.111;
    }
  # CHEF-BOOK-wire
  host CHEF-BOOK-wire {
    hardware ethernet 15:a2:e7:33:56:ab;
    fixed-address 10.254.77.111;
    }

Answer 1

Why is fixed-address written twice in a row? To finally fix it?

Answer 2

Hmm... Why not just issue exactly the same permissions and accesses for one more IP?
Just think, what will happen if you connect the wire and Wi-Fi at the same time?