#include <stdint.h>
#include <sys/socket.h>

typedef uint32_t in_addr_t;
struct in_addr;
typedef uint16_t in_port_t;
struct in6_addr;
struct sockaddr_in;
struct sockaddr_in6;
struct ip_mreq;
struct ip_mreq_source;
struct ipv6_mreq;
struct group_req;
struct group_source_req;
struct ip_msfilter;
struct group_filter;