IP_RECVOPTS(2const)

💖 IP_RECVOPTS — bestie edition 💖

okay so this is IP_RECVOPTS, a member of the IP_RECVOPTS(2const) family, and it's here to let you receive all incoming IP options in a control message. iconic behavior tbh 🎀

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✨ NAME ✨

IP_RECVOPTS — receive all incoming IP options in control message 🌸

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📚 LIBRARY 📚

Standard C library (libc, -lc) 🫶

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🧚 SYNOPSIS 🧚

#include <netinet/in.h>  /* Definition of IP* constants */
#include <sys/socket.h>

int setsockopt(int sockfd, IPPROTO_IP, IP_RECVOPTS,
               const int *enable, sizeof(int));

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💅 DESCRIPTION 💅

So the whole vibe here? You set this option and every incoming IP option gets passed all the way to the user inside an IP_OPTIONS(2const) control message. it's giving "send me everything, I want the receipts" 💌

The routing header and other options are already filled in for the local host, no cap. so like, that part's done for you, you don't gotta lift a finger 🧚

🚫 not supported for SOCK_STREAM sockets. that's the boundary bestie, don't try it there, it's simply not the vibe.

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😭 ERRORS 😭

no unique error tea here, we're pointing you at the classics:

• See IPPROTO_IP(2const).
• See setsockopt(2).
• See ip(7).

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👑 HISTORY 👑

Linux 2.2. — yes she's been around a minute, an elder icon, we stan a legacy queen ✨

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🔥 SEE ALSO 🔥

• IPPROTO_IP(2const)
• setsockopt(2)
• ip(7)

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and that's the whole page bestie, fr fr 💖 mwah! this one's from Linux man-pages 6.20, dated 2025-11-25 — go forth and receive those options, you absolute main character 🦋💜