extern void change_peer_ip(peer_config_t *peer);
extern peer_config_t *setup_relay_peer_nut(const char *prefix);
extern peer_config_t *setup_relay_peer_nut_indirect(const char *prefix);
extern void change_peer_ip(peer_config_t *peer);
extern peer_config_t *setup_relay_peer_nut(const char *prefix);
extern peer_config_t *setup_relay_peer_nut_indirect(const char *prefix);