ENUM NFT_SET_FLAGS(9)

💅 enum nft_set_flags(9) — like, the nf_tables set flags page, bestie 🎀

okay so this is from the Kernel API Manual — yes, that one — and it's literally the whole vibe behind nf_tables sets. ngl it's short but it's iconic, so let's go ✨

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🌸 NAME 🌸

enum nft_set_flags — the nf_tables set flags, periodt. every single flag your little set can wave around 💖

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🦋 SYNOPSIS 🦋

the whole enum, verbatim, no cap — copy it exactly like this:

enum nft_set_flags {
    NFT_SET_ANONYMOUS ,
    NFT_SET_CONSTANT ,
    NFT_SET_INTERVAL ,
    NFT_SET_MAP ,
    NFT_SET_TIMEOUT ,
    NFT_SET_EVAL ,
    NFT_SET_OBJECT ,
    NFT_SET_CONCAT ,
    NFT_SET_EXPR

};

(yes there's a lil blank line before the closing brace, that's just how it is, don't come for me 🙈)

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👑 Constants 👑

here's the tea on every single one of them 🍓

• NFT_SET_ANONYMOUS — name allocation, with automatic cleanup on unlink. so it gets a name, and when it's unlinked it's lowkey self-cleaning. main character energy 🧹✨
• NFT_SET_CONSTANT — the set contents may not change while it's bound. like, hands off, it's locked in 💅
• NFT_SET_INTERVAL — the set contains intervals. ranges, babe 🌈
• NFT_SET_MAP — the set is used as a dictionary. key → value, iykyk 🔑
• NFT_SET_TIMEOUT — the set uses timeouts. stuff expires, it's giving limited edition ⏳
• NFT_SET_EVAL — the set can be updated from the evaluation path. yup, mid-evaluation glow-up 🔥
• NFT_SET_OBJECT — the set contains stateful objects. not just data, objects 👑
• NFT_SET_CONCAT — the set contains a concatenation. gluing things together, fr fr 🧚
• NFT_SET_EXPR — the set contains expressions. expressions in your set, fancy 🎀

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⭐ SEE ALSO ⭐

the source of truth is the kernel file ./include/uapi/linux/netfilter/nf_tables.h enum — go read it, bestie 🫶

and here's the whole friend group, every single one of them, no skips 💜

nft_registers(9), enum nft_verdicts(9), enum nf_tables_msg_types(9), enum nft_list_attributes(9), enum nft_hook_attributes(9), enum nft_table_flags(9), enum nft_table_attributes(9), enum nft_chain_attributes(9), enum nft_rule_attributes(9), enum nft_rule_compat_flags(9), enum nft_rule_compat_attributes(9), enum nft_set_policies(9), enum nft_set_desc_attributes(9), enum nft_set_field_attributes(9), enum nft_set_attributes(9), enum nft_set_elem_flags(9), enum nft_set_elem_attributes(9), enum nft_set_elem_list_attributes(9), enum nft_data_types(9), enum nft_data_attributes(9), enum nft_verdict_attributes(9), enum nft_expr_attributes(9), enum nft_immediate_attributes(9), enum nft_bitwise_ops(9), enum nft_bitwise_attributes(9), enum nft_byteorder_ops(9), enum nft_byteorder_attributes(9), enum nft_cmp_ops(9), enum nft_cmp_attributes(9), enum nft_range_ops(9), enum nft_range_attributes(9), enum nft_lookup_attributes(9), enum nft_dynset_attributes(9), enum nft_payload_bases(9), enum nft_payload_csum_types(9), enum nft_payload_attributes(9), enum nft_exthdr_op(9), enum nft_exthdr_attributes(9), enum nft_meta_keys(9), enum nft_rt_keys(9), enum nft_hash_types(9), enum nft_hash_attributes(9), enum nft_meta_attributes(9), enum nft_rt_attributes(9), enum nft_socket_attributes(9), enum nft_ct_keys(9), enum nft_ct_attributes(9), enum nft_offload_attributes(9), enum nft_limit_attributes(9), enum nft_connlimit_attributes(9), enum nft_counter_attributes(9), enum nft_last_attributes(9), enum nft_log_attributes(9), enum nft_log_level(9), enum nft_queue_attributes(9), enum nft_quota_attributes(9), enum nft_secmark_attributes(9), enum nft_reject_types(9), enum nft_reject_inet_code(9), enum nft_reject_attributes(9), enum nft_nat_types(9), enum nft_nat_attributes(9), enum nft_tproxy_attributes(9), enum nft_masq_attributes(9), enum nft_redir_attributes(9), enum nft_dup_attributes(9), enum nft_fwd_attributes(9), enum nft_objref_attributes(9), enum nft_gen_attributes(9), enum nft_object_attributes(9), enum nft_flowtable_flags(9), enum nft_flowtable_attributes(9), enum nft_flowtable_hook_attributes(9), enum nft_osf_attributes(9), enum nft_synproxy_attributes(9), enum nft_devices_attributes(9), enum nft_trace_attributes(9), enum nft_ng_attributes(9)

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and that's the whole page, bestie 💖 this cutie came from ./include/uapi/linux/netfilter and it's dated October 2026 — slay, see u in the next man page 👋✨