ENUM NFT_FWD_ATTRIBUTES(9)

🦋 enum nft_fwd_attributes(9) 🦋

okay so bestie, welcome to the Kernel API Manual 💅 this page is literally all about enum nft_fwd_attributes — the netlink attributes for the nf_tables fwd expression ✨ it's short, it's sweet, it's giving "small but mighty," and we're gonna read it together 🫶

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🌸 NAME 🌸

enum nft_fwd_attributes — the nf_tables fwd expression netlink attributes, periodt 💖

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✨ SYNOPSIS ✨

enum nft_fwd_attributes {
    NFTA_FWD_UNSPEC ,
    NFTA_FWD_SREG_DEV ,
    NFTA_FWD_SREG_ADDR ,
    NFTA_FWD_NFPROTO ,
    __NFTA_FWD_MAX

};

no cap, that's the whole enum — five entries, zero filler 🔥

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🎀 Constants 🎀

okay so here's the cast of characters, one by one 👑

• NFTA_FWD_UNSPEC — the manpage says -- undescribed -- and honestly? same. it's the unspecified one, that's the whole lore 💀 no description exists in the source, so don't come for me, I'm just reporting 🫶
• NFTA_FWD_SREG_DEV — source register of output interface (NLA_U32: nft_register) 🌈 this is the one holding where the packet should, like, go — the output interface register iykyk ✨
• NFTA_FWD_SREG_ADDR — source register of destination address (NLA_U32: nft_register) 🦋 destination address register, slay 💜
• NFTA_FWD_NFPROTO — layer 3 family of source register address (NLA_U32: enum nfproto) 🔥 the L3 family of that source register address, iconic ⭐
• __NFTA_FWD_MAX — -- undescribed -- again bestie 😭 it's the internal max marker, and the manpage gives us literally nothing else about it. no notes. we respect its privacy 🙈

ngl, two of these are marked -- undescribed -- and I refuse to invent lore that isn't in the source. that's the one thing I will NOT do 💅

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🔍 SEE ALSO 🔍

the manpage points you at the kernel file ./include/uapi/linux/netfilter/nf_tables.h 🌸 and then it goes absolutely feral with cross-references — every single one is right here, no crumbs left behind 👑

• enum 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_flags(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_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)

like I said — feral. and we love her for it 💖

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and that's the whole page, bestie, you ate that 🍓 this came out of ./include/uapi/linux/netfilter and it's dated October 2026 ⭐ go forth and forward those packets, main character energy only 👑💅