{ log custom-logger { format filter { wrap console fields { common_log delete request>remote_addr ip_mask { ipv4 24 ipv6 32 } } } } } ---------- { "logging": { "logs": { "custom-logger": { "encoder": { "fields": { "common_log": { "filter": "delete" }, "request\u003eremote_addr": { "filter": "ip_mask", "ipv4_cidr": 24, "ipv6_cidr": 32 } }, "format": "filter", "wrap": { "format": "console" } } } } } }