With OCI CLI:
$ oci network private-ip list --ip-address <Network firewall IP> --subnet-id <Network Firewall Subnet>
E.g.:
$ oci network private-ip list --ip-address 10.0.0.10 --subnet-id ocid1.subnet.oc1...
{
"data": [
{
"availability-domain": "FHff:EU-FRANKFURT-1-AD-1",
"compartment-id": "ocid1.compartment...",
"defined-tags": {
"Oracle-Tags": {
"CreatedBy": "default/...",
"CreatedOn": "2024-09-16T08:52:58.337Z"
}
},
"display-name": "nfw-fra-lzp-hub-dmz",
"freeform-tags": {},
"hostname-label": "nfw-fra-lzp-hub-dmz",
"id": "ocid1.privateip.oc1.eu-frankfurt-1.abtheljrwac5mwh4fai526d4umxtregierqyhukzogbtx77s43o772rnxiua",
"ip-address": "10.0.0.10",
"is-primary": true,
"subnet-id": "ocid1.subnet...",
"time-created": "2024-09-16T08:52:58.462000+00:00",
"vlan-id": null,
"vnic-id": "ocid1.vnic..."
}
]
}
Gather the "id" contents of the return JSON information "ocid1.privateip....".