While 17.0 is approaching EOL, I can `openstackclient` in 17.1 compose `RHOS-17.1-RHEL-9-20230925.n.1` can configure those options:
```
[stack@undercloud-0 ~]$ openstack --os-cloud overcloud  port set --extra-dhcp-option name=domain-name,value=fistro.com 6a0f2f87-9380-45c6-be13-d4c580e04ff7
[stack@undercloud-0 ~]$ openstack --os-cloud overcloud  port show 6a0f2f87-9380-45c6-be13-d4c580e04ff7
+-------------------------+-------------------------------------------------------------------------------+
| Field                   | Value                                                                         |
+-------------------------+-------------------------------------------------------------------------------+
| admin_state_up          | UP                                                                            |
| allowed_address_pairs   |                                                                               |
| binding_host_id         |                                                                               |
| binding_profile         |                                                                               |
| binding_vif_details     |                                                                               |
| binding_vif_type        | unbound                                                                       |
| binding_vnic_type       | normal                                                                        |
| created_at              | 2023-10-03T16:24:35Z                                                          |
| data_plane_status       | None                                                                          |
| description             |                                                                               |
| device_id               |                                                                               |
| device_owner            |                                                                               |
| device_profile          | None                                                                          |
| dns_assignment          | None                                                                          |
| dns_domain              | None                                                                          |
| dns_name                | None                                                                          |
| extra_dhcp_opts         | ip_version='4', opt_name='domain-name', opt_value='fistro.com'                |
| fixed_ips               | ip_address='192.168.199.16', subnet_id='359efb85-4e76-4fce-8bdd-c211ee3e6efc' |
| id                      | 6a0f2f87-9380-45c6-be13-d4c580e04ff7                                          |
| ip_allocation           | None                                                                          |
| mac_address             | fa:16:3e:b1:05:0f                                                             |
| name                    | TEST                                                                          |
| network_id              | 911d0651-a4c4-4182-8816-9624ae5a60e6                                          |
| numa_affinity_policy    | None                                                                          |
| port_security_enabled   | True                                                                          |
| project_id              | 55a00d25607a437aa8c7102afa6a1ffe                                              |
| propagate_uplink_status | None                                                                          |
| qos_network_policy_id   | None                                                                          |
| qos_policy_id           | None                                                                          |
| resource_request        | None                                                                          |
| revision_number         | 2                                                                             |
| security_group_ids      | 8d6ab6eb-f8ba-4c2a-b867-dc8ec04ec76b                                          |
| status                  | DOWN                                                                          |
| tags                    |                                                                               |
| trunk_details           | None                                                                          |
| updated_at              | 2023-10-03T16:24:51Z                                                          |
+-------------------------+-------------------------------------------------------------------------------+
```

Support has ended on 22 September 2023.