ip6_dst_lookup_flow(9)

✨ ip6_dst_lookup_flow(9) ✨

okay so bestie, this is a page from the Kernel API Manual, and it's literally about doing a route lookup on a flow with ipsec. iykyk 💅

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🌸 NAME 🌸

ip6_dst_lookup_flow — perform route lookup on flow with ipsec

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🎀 SYNOPSIS 🎀

struct dst_entry * ip6_dst_lookup_flow (struct net *net , const struct
       sock *sk , struct flowi6 *fl6 , const struct in6_addr *final_dst );

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🦋 ARGUMENTS 🦋

• net — the network namespace where the lookup happens, periodt.
• sk — the socket that provides route info. it's giving "source of truth" energy.
• fl6 — the flow to look up. yes bestie, this is the flow.
• final_dst — the final destination address for the ipsec lookup. iconic.

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💖 DESCRIPTION 💖

okay so this function performs a route lookup on the given flow. no cap.

it returns a valid dst pointer on success, or a pointer encoded error code. that's the whole vibe check 😭✨

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🔥 SEE ALSO 🔥

Kernel file ./net/ipv6/ip6_output.c ip6_dst_lookup(9), ip6_sk_dst_lookup_flow(9)

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mwah 💋 this cutie is from <source>./net/ipv6</source>, dated <date>October 2026</date>, and it lives in the Kernel API Manual — love that for us 🫶👑