memcpy(sa,&dest->sin.sin_addr,4);
memset(sa+4,0,4);
memcpy(sa+6,&dest->sin.sin_port,2);
sendto(st->fd,sa,buf->size+8,0,(struct sockaddr *)&st->proxy,
sizeof(st->proxy));
memcpy(sa,&dest->sin.sin_addr,4);
memset(sa+4,0,4);
memcpy(sa+6,&dest->sin.sin_port,2);
sendto(st->fd,sa,buf->size+8,0,(struct sockaddr *)&st->proxy,
sizeof(st->proxy));