struct dht {
	char id[20];
	int socket;
	char secret[16]; /**< for calculating opaque write token, random */
};
struct node {
	char id[20];
	int lost;
	int sent;
	int answers;
	int malformed;
	int received;
	time_t last;
	struct sockaddr addr;
};
void token (char * dest, struct sockaddr addr) {š

}