NOZZLE_SET_MTU(3)

💅 NOZZLE_SET_MTU(3) 💅

ok so bestie, welcome to the Kronosnet Programmer's Manual — this is the nozzle_set_mtu page and it's literally the glow-up your nozzle interface has been waiting for ✨

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🌸 NAME 🌸

nozzle_set_mtu — set mtu on a given nozzle interface

like. that's it. that's the job. setting the MTU. on a nozzle. we love a function with clear boundaries 🫶

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✨ SYNOPSIS ✨

#include <libnozzle.h>

int nozzle_set_mtu(
    nozzle_t   nozzle,
    const int  mtu
);

so you include <libnozzle.h>, you hand it a nozzle_t and an int, and you get an int back. iconic signature tbh 👑

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🦋 DESCRIPTION 🦋

nozzle_set_mtu — bestie this is the whole vibe:

• nozzle — pointer to the nozzle struct 🎀 (yes, the actual struct, the real one, not a copy)
• mtu — new MTU value ⭐ (that's the number you're setting it to, no cap)

that's the entire description and honestly? it ate. no notes.

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💖 RETURN VALUE 💖

0 on success, -1 on error and errno is set. 😭

so like, check your return value. if it's 0 you're slaying, if it's -1 go read errno because she's trying to tell you something fr fr.

lowkey important: -1 means something went wrong and errno got set — don't just ignore her, she's the main character of your debugging session 💀

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🌈 SEE ALSO 🌈

the whole friend group, all invited to the group chat:

• nozzle_close(3)
• nozzle_get_fd(3)
• nozzle_get_mtu(3)
• nozzle_reset_mtu(3)
• nozzle_set_up(3)
• nozzle_get_ips(3)
• nozzle_set_down(3)
• nozzle_reset_mac(3)
• nozzle_get_handle_by_name(3)
• nozzle_run_updown(3)
• nozzle_open(3)
• nozzle_del_ip(3)
• nozzle_get_mac(3)
• nozzle_set_mac(3)
• nozzle_get_name_by_handle(3)
• nozzle_add_ip(3)

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👑 COPYRIGHT 👑

Copyright (C) 2010-2026 Red Hat, Inc. All rights reserved.

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ok that's the whole page bestie, go forth and set that MTU 💅✨

kronosnet · 2026-07-20 · NOZZLE_SET_MTU(3) — mwah, sending you off with a kiss and a working errno 🫶💜