Cannot deserialize rule that references a named counter

[r-birkner]

Describe the bug The crate fails to deserialize the nftables output if the rule contains a named counter. For example, the following rule:

ct state new add @connection_limit { ip saddr ct count over 500 } counter name connection_limit_v4_counter drop

If one drops the part counter name connection_limit_v4_counter, it all works without issue.

Expected behavior The crate should deserialize properly

Nftables rulesets This is the resulting JSON:

{
    "rule": {
        "family": "ip",
        "table": "filter",
        "chain": "INPUT",
        "handle": 15,
        "expr": [
            {
                "match": {
                    "op": "in",
                    "left": {
                        "ct": {
                            "key": "state"
                        }
                    },
                    "right": "new"
                }
            },
            {
                "set": {
                    "op": "add",
                    "elem": {
                        "payload": {
                            "protocol": "ip",
                            "field": "saddr"
                        }
                    },
                    "set": "@connection_limit"
                }
            },
            {
                "counter": "connection_limit_v4_counter"
            },
            {
                "drop": null
            }
        ]
    }
}

Version information

• Rustc version (rustc --version): 1.79.0
• Cargo version (cargo --version): 1.79.0
• Nftables version (nft --version): 0.9.3
• OS version (cat /etc/os-release): Ubuntu 20.04.6 LTS