vyos@vyos# run sh dhcp server leases state active
IP Address    MAC address        State    Lease start          Lease expiration     Remaining    Pool    Hostname
------------  -----------------  -------  -------------------  -------------------  -----------  ------  ----------
172.19.11.10  50:0b:00:05:00:03  active   2023/04/17 10:49:38  2023/04/17 12:49:38  1:36:50      LAN     server
172.16.0.11   00:50:79:66:68:02  active   2023/04/17 11:05:45  2023/04/17 13:05:45  1:52:57      DMZ     VPCS1

vyos@vyos# run sh dhcp server leases state all
IP Address    MAC address    State    Lease start    Lease expiration    Remaining    Pool    Hostname
------------  -------------  -------  -------------  ------------------  -----------  ------  ----------

vyos@vyos# run sh dhcp server leases state abandoned
IP Address    MAC address    State    Lease start    Lease expiration    Remaining    Pool    Hostname
------------  -------------  -------  -------------  ------------------  -----------  ------  ----------

vyos@vyos# sudo cat  /config/dhcpd.leases
# The format of this file is documented in the dhcpd.leases(5) manual page.
# This lease file was written by isc-dhcp-4.4.3-P1

# authoring-byte-order entry is generated, DO NOT DELETE
authoring-byte-order little-endian;

lease 172.19.11.10 {
  starts 1 2023/04/17 10:49:38;
  ends 1 2023/04/17 12:49:38;
  tstp 1 2023/04/17 12:49:38;
  cltt 1 2023/04/17 10:49:38;
  binding state active;
  next binding state free;
  rewind binding state free;
  hardware ethernet 50:0b:00:05:00:03;
  set shared-networkname = "LAN";
  client-hostname "server";
}
server-duid "\000\001\000\001+\317\337\312P\013\000\003\000\001";

lease 172.16.0.10 {
  starts 1 2023/04/17 11:05:41;
  ends 2 2023/04/18 11:05:41;
  cltt 1 2023/04/17 11:05:41;
  binding state abandoned;
  next binding state free;
  rewind binding state free;
  client-hostname "VPCS1";
}