多个网卡使用相同IP的网卡绑定

int initUdpBroadCastSocket_eth0(void)
{
        struct ifreq opt1;


        const char *inface = "eth0";//根据自己的情况修改
	strncpy(opt1.ifr_name, inface,IFNAMSIZ);

	const int opt = 1;
	int nb = 0;
	struct sockaddr_in myaddr;

	int sockfd = socket(AF_INET,SOCK_DGRAM, IPPROTO_UDP);
	if (-1 == sockfd)
	{
		return -1;
	}
	nb = setsockopt(sockfd, SOL_SOCKET, SO_BINDTODEVICE, (char *)&opt1, sizeof(opt1));
	if(nb == -1)
	{
		perror("socket_ETH0 error");
		return -1;
	}
	nb = setsockopt(sockfd, SOL_SOCKET, SO_BROADCAST, (char *)&opt, sizeof(opt));
	if(nb == -1)
	{
		perror("socket_ETH0 error");
		return -1;
	}

	return sockfd;
}

int initUdpBroadCastSocket_ethyzd(void)
{
	struct ifreq opt1;

        const char *inface = "ethyzd";//根据自己的情况修改
	strncpy(opt1.ifr_name, inface,IFNAMSIZ);

        const int opt = 1;
	int nb = 0;
	struct sockaddr_in myaddr;

	int sockfd = socket(AF_INET,SOCK_DGRAM, IPPROTO_UDP);
	if (-1 == sockfd)
	{
		return -1;
	}
	nb = setsockopt(sockfd, SOL_SOCKET, SO_BINDTODEVICE, (char *)&opt1, sizeof(opt1));
	if(nb == -1)
	{
		perror("socket_ETHyzd error");
		return -1;
	}
	nb = setsockopt(sockfd, SOL_SOCKET, SO_BROADCAST, (char *)&opt, sizeof(opt));
	if(nb == -1)
	{
		perror("socket_ETHyzd error");
		return -1;
	}

	return sockfd;
}
testeth(void *arg)
{
	int recv_len, send_len;
	int ETH0_bindtest1;
	int ETHyzd_bindtest1;
	socklen_t addr_len;
	struct sockaddr_in recv_address;
	struct sockaddr_in airLC6500_addr;
	char recv_buffer1[] ={"testeth0"};
	char recv_buffer2[] ={"testethyzd"};

	ETH0_bindtest1 = initUdpBroadCastSocket_eth0();
	ETHyzd_bindtest1 = initUdpBroadCastSocket_ethyzd();

	while(1)
	{
	    
			send_len = sendUdp(ETH0_bindtest1, BROADCAST_IP, testyzd1, recv_buffer1, sizeof(recv_buffer1));
			send_len = sendUdp(ETHyzd_bindtest1, BROADCAST_IP, testyzd2, recv_buffer2, sizeof(recv_buffer2));
			sleep(1);
	}
int main(void)
{
	
	pthread_t AIRCTRL_SEND_Process_Thread;	
	
	pthread_create(&AIRCTRL_RECEIVE_Process_Tread, NULL, AIRCTRL_Data1_Recv_Process, NULL);

	/* main Task */

	while(1)
	{}
}