lnav/test/formats/partitions/format.json

{
    "$schema": "https://lnav.org/schemas/format-v1.schema.json",
    "syslog_log": {
        "partitions": {
            "dhclient-binding": {
                "description": "Set partition name to current IP",
                "pattern": " bound to ([^ ]+) --"
            }
        }
    }
}