pcap_set_datalink(3pcap)

pcap_set_datalink3pcap

Set the link-layer header type to be used by a capture device

Usage

#include <pcap/pcap.h>

int pcap_set_datalink(pcap_t *p, int dlt);

Overview

pcap_set_datalink() is used to set the current link-layer header type of the pcap descriptor to the type specified by dlt.

Return value

pcap_set_datalink() returns 0 on success, PCAP_ERROR_NOT_ACTIVATED if called on a capture handle that has been created but not activated, or PCAP_ERROR on other errors. If PCAP_ERROR is returned, pcap_geterr(3PCAP) or pcap_perror(3PCAP) may be called with p as an argument to fetch or display the error text.

Releases

9 releases since Debian 6.0 (Squeeze); the text changed 6 times.

  1. 6.0
  2. 7
  3. 8
  4. 9–10
  5. 11
  6. 12–13
  7. Arch

From libpcap 1.11.0-1 in Arch Linux 2026-11-01. Parsed by carta from the page's man source.