Merge "Listen on dualstack sockets."

/* open listen() port on any interface */

int socket_inaddr_any_server(int port, int type)

{

    struct sockaddr_in addr;

    struct sockaddr_in6 addr;

    int s, n;

    memset(&addr, 0, sizeof(addr));

    addr.sin_family = AF_INET;

    addr.sin_port = htons(port);

    addr.sin_addr.s_addr = htonl(INADDR_ANY);

    addr.sin6_family = AF_INET6;

    addr.sin6_port = htons(port);

    addr.sin6_addr = in6addr_any;

    s = socket(AF_INET, type, 0);

    s = socket(AF_INET6, type, 0);

    if (s < 0) return -1;

    n = 1;