Remove duplicated include.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
 #include <errno.h>
 #include <linux/if_packet.h>
 #include <linux/if_ether.h>
-#include <linux/if_packet.h>
 #include <linux/ipv6.h>
 #include <netinet/ip.h>
 #include <netinet/in.h>
 #include <stdbool.h>
 #include <stdlib.h>
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
 #include <sys/ioctl.h>
 #include <sys/socket.h>
 
        close(fd);
 }
 
-#include <sys/socket.h>
 #include <sys/ioctl.h>
 #include <arpa/inet.h>
 #include <sys/select.h>
 
 #include <unistd.h>
 #include <string.h>
 #include <errno.h>
-#include <sys/ioctl.h>
 #include <stdbool.h>
 #include <signal.h>
 #include <fcntl.h>