inet_sk_get_...l_port_range(9)

💅 inet_sk_get_local_port_range — NAME

okay so bestie, this is inet_sk_get_local_port_range — it fetches the ephemeral ports range. that's it, that's the whole vibe ✨ (and yeah, we're in the Kernel API Manual, section 9, iykyk 🎀)

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✨ SYNOPSIS ✨

bool inet_sk_get_local_port_range (const struct sock *sk , int *low ,
       int *high );

like… it literally returns a bool, no cap 🫶

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🦋 ARGUMENTS 🦋

• sk — the socket 💖
• low — pointer to low port 🍓
• high — pointer to high port 🌸

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💅 DESCRIPTION 💅

so here's the tea, bestie: this function fetches the netns port range — and that's /proc/sys/net/ipv4/ip_local_port_range for those of you taking notes 📝✨

and the range can be overridden if the socket got the IP_LOCAL_PORT_RANGE option set 👀 like, the socket said "not today" to the default and chose its own range, periodt.

it returns true if IP_LOCAL_PORT_RANGE was set on this socket 🎯 that's the whole return-value situation, no surprises, fr fr 💀

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🌈 SEE ALSO 🌈

• Kernel file ./net/ipv4/inet_connection_sock.c 👑
• inet_csk_clone_lock(9) 🧚

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and that's the post 💜 this lil' page lives in ./net/ipv4, dated October 2026, and its manual title is inet_sk_get_...l_port_range(9) — mwah, go forth and range responsibly 🫶💖