KNET_HANDLE_PMTUD_SET(3)

💖 KNET_HANDLE_PMTUD_SET(3) 💖

okay bestie, welcome to the Kronosnet Programmer's Manual — this is the page for knet_handle_pmtud_set, and yes it's as iconic as it sounds 💅

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✨ NAME ✨

knet_handle_pmtud_set — set the current interface MTU 🎀

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✨ SYNOPSIS ✨

#include <libknet.h>

int knet_handle_pmtud_set(
    knet_handle_t  knet_h,
    unsigned int   iface_mtu
);

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✨ DESCRIPTION ✨

knet_handle_pmtud_set 🦋

• knet_h — pointer to knet_handle_t
• iface_mtu — current interface MTU, value 0 to 65535. Setting it to 0 will re-enable automatic MTU discovery. In a setup with multiple interfaces, please specify the lowest MTU between the selected intefaces. knet will automatically adjust this value for all headers overhead and set the correct data_mtu. data_mtu can be retrivied with knet_handle_pmtud_get(3), or applications will receive a pmtud_nofity event if enabled via knet_handle_enable_pmtud_notify(3).

no cap, that 0 thing is the main character move if you just want knet to figure the MTU out for you 🌈

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✨ RETURN VALUE ✨

knet_handle_pmtud_set returns 0 on success, -1 on error, and errno is set. 💀

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✨ SEE ALSO ✨

• knet_handle_remove_datafd(3)
• knet_handle_get_stats(3)
• knet_host_add(3)
• knet_handle_pmtud_setfreq(3)
• knet_handle_pmtud_get(3)
• knet_handle_crypto_use_config(3)
• knet_host_get_id_by_host_name(3)
• knet_host_get_status(3)
• knet_link_add_acl(3)
• knet_link_get_pong_count(3)
• knet_link_get_priority(3)
• knet_handle_free(3)
• knet_handle_enable_sock_notify(3)
• knet_handle_get_datafd(3)
• knet_recv(3)
• knet_link_get_ping_timers(3)
• knet_log_get_subsystem_id(3)
• knet_host_remove(3)
• knet_host_enable_status_change_notify(3)
• knet_strtoaddr(3)
• knet_link_rm_acl(3)
• knet_send(3)
• knet_handle_enable_pmtud_notify(3)
• knet_get_crypto_cipher_list(3)
• knet_handle_get_transport_reconnect_interval(3)
• knet_link_get_enable(3)
• knet_link_set_priority(3)
• knet_log_set_loglevel(3)
• knet_handle_get_channel(3)
• knet_link_get_config(3)
• knet_link_get_link_list(3)
• knet_get_crypto_hash_list(3)
• knet_get_transport_list(3)
• knet_get_transport_id_by_name(3)
• knet_log_get_loglevel_id(3)
• knet_handle_new_ex(3)
• knet_host_set_name(3)
• knet_addrtostr(3)
• knet_handle_setfwd(3)
• knet_get_compress_list(3)
• knet_host_set_policy(3)
• knet_get_transport_name_by_id(3)
• knet_handle_enable_filter(3)
• knet_handle_crypto_rx_clear_traffic(3)
• knet_handle_compress(3)
• knet_link_get_status(3)
• knet_handle_add_datafd(3)
• knet_send_sync(3)
• knet_log_get_loglevel_name(3)
• knet_handle_enable_access_lists(3)
• knet_host_get_host_list(3)
• knet_host_get_policy(3)
• knet_link_set_enable(3)
• knet_link_set_pong_count(3)
• knet_log_get_subsystem_name(3)
• knet_host_get_name_by_host_id(3)
• knet_link_clear_config(3)
• knet_log_get_loglevel(3)
• knet_handle_new(3)
• knet_handle_pmtud_getfreq(3)
• knet_handle_clear_stats(3)
• knet_link_set_config(3)
• knet_handle_crypto_set_config(3)
• knet_handle_crypto(3)
• knet_get_crypto_list(3)
• knet_handle_set_transport_reconnect_interval(3)
• knet_link_clear_acl(3)
• knet_link_set_ping_timers(3)
• knet_handle_setprio_dscp(3)
• knet_link_insert_acl(3)

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✨ COPYRIGHT ✨

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

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mwah 💜 that's the whole page, go forth and set your MTUs. this came from the kronosnet manual, dated 2026-07-20 — and yeah, it's KNET_HANDLE_PMTUD_SET(3), periodt 💅✨