+int system_flush_routes(void);
+
+bool system_resolve_rt_type(const char *type, unsigned int *id);
+bool system_resolve_rt_table(const char *name, unsigned int *id);
+bool system_is_default_rt_table(unsigned int id);
+bool system_resolve_rpfilter(const char *filter, unsigned int *id);
+
+int system_del_ip_tunnel(const char *name, struct blob_attr *attr);
+int system_add_ip_tunnel(const char *name, struct blob_attr *attr);
+
+int system_add_iprule(struct iprule *rule);
+int system_del_iprule(struct iprule *rule);
+int system_flush_iprules(void);
+
+bool system_resolve_iprule_action(const char *action, unsigned int *id);
+
+time_t system_get_rtime(void);
+
+void system_fd_set_cloexec(int fd);
+
+int system_update_ipv6_mtu(struct device *device, int mtu);