struct odhcpd_ipaddr *addrs, size_t cnt);
int odhcpd_get_preferred_interface_address(int ifindex, struct in6_addr *addr);
struct interface* odhcpd_get_interface_by_name(const char *name);
-int odhcpd_get_interface_mtu(const char *ifname);
+int odhcpd_get_interface_config(const char *ifname, const char *what);
int odhcpd_get_mac(const struct interface *iface, uint8_t mac[6]);
struct interface* odhcpd_get_interface_by_index(int ifindex);
struct interface* odhcpd_get_master_interface(void);
-void odhcpd_urandom(void *data, size_t len);
+int odhcpd_urandom(void *data, size_t len);
void odhcpd_setup_route(const struct in6_addr *addr, int prefixlen,
const struct interface *iface, const struct in6_addr *gw, bool add);