send raw packet using 'AF_PACKET' and 'send()', instead of 'sendto'

af_packet.c

#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <net/if.h>
#include <arpa/inet.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <linux/if_ether.h>
#include <linux/if_packet.h>

int main()
{
	unsigned char data[] = {
		1, 2, 3, 4, 5, 6, 7, 8,
		9, 0, 1, 2, 3, 4, 5, 6 
	};
	char *interface_name = (char *) "eth0";

	int fd = socket(AF_PACKET, SOCK_RAW, ETH_P_ALL);
	if (fd < 0) {
		perror("socket");
	}

	struct sockaddr_ll addr;
	memset(&addr, 0, sizeof(struct sockaddr_ll));
	addr.sll_family = AF_PACKET;
	addr.sll_ifindex = if_nametoindex(interface_name);
	addr.sll_protocol = htons(ETH_P_ALL);
	if (bind(fd, (struct sockaddr*) &addr, sizeof(addr)) < 0) {
		perror("Bind");
		close(fd);
	}

	if (send(fd, data, sizeof(data), 0) <0 ){
		perror("Send");
	}
}