+void interface_add_dns_server(struct interface_ip_settings *ip, const char *str);
+void interface_add_dns_server_list(struct interface_ip_settings *ip, struct blob_attr *list);
+void interface_add_dns_search_list(struct interface_ip_settings *ip, struct blob_attr *list);
+void interface_write_resolv_conf(void);
+
+void interface_ip_add_route(struct interface *iface, struct blob_attr *attr, bool v6);
+
+void interface_ip_update_start(struct interface_ip_settings *ip);
+void interface_ip_update_complete(struct interface_ip_settings *ip);
+void interface_ip_flush(struct interface_ip_settings *ip);
+void interface_ip_set_enabled(struct interface_ip_settings *ip, bool enabled);
+void interface_ip_update_metric(struct interface_ip_settings *ip, int metric);
+
+struct interface *interface_ip_add_target_route(union if_addr *addr, bool v6, struct interface *iface);
+
+struct device_prefix* interface_ip_add_device_prefix(struct interface *iface,
+ struct in6_addr *addr, uint8_t length, time_t valid_until, time_t preferred_until,
+ struct in6_addr *excl_addr, uint8_t excl_length, const char *pclass);
+void interface_ip_set_ula_prefix(const char *prefix);
+void interface_refresh_assignments(bool hint);