STRUCT SOCKADDR_L2TPIP6(9)

💅 struct sockaddr_l2tpip6(9) — the Kernel API Manual glow-up 🎀

okay so bestie, welcome to the Kernel API Manual ✨ and today's main character is struct sockaddr_l2tpip6 — literally the sockaddr structure for L2TP-over-IPv6 sockets. yes, IPv6. she's futuristic. she's giving tunnel era. 🌈

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🌸 NAME 🌸

struct sockaddr_l2tpip6 — the sockaddr structure for L2TP-over-IPv6 sockets, no cap 💖

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✨ SYNOPSIS ✨

here's the whole vibe, copied exactly so you can trust me fr fr:

struct sockaddr_l2tpip6 {
    __kernel_sa_family_t l2tp_family;
    __be16 l2tp_unused;
    __be32 l2tp_flowinfo;
    struct in6_addr l2tp_addr;
    __u32 l2tp_scope_id;
    __u32 l2tp_conn_id;
 };

yes the closing brace is indented like that. that's just how she is. iconic behavior honestly 🫶

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🦋 Members 🦋

• l2tp_family — the address family number, and that number is AF_L2TPIP. periodt. 👑
• l2tp_addr — protocol specific address information. it's the address info, but make it protocol specific 💫
• l2tp_conn_id — connection id of tunnel. that's the tunnel's whole identity bestie, don't lose it 😭

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🎀 SEE ALSO 🎀

• Kernel file ./include/uapi/linux/l2tp.h — go read it, iykyk 📖
• enum l2tp_debug_flags(9) — yes, the enum. go look. lowkey useful 🌟

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💀 quick vibe check: the family field is literally called AF_L2TPIP in the original, even though this whole struct is the IPv6 one. not me questioning the naming choices, i'm just the messenger 🫶 keep it exactly as written.

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and that's the page, bestie! 🧚 source is ./include/uapi/linux and it's dated October 2026 — so she's from the future, obviously. slay 💜✨