ip4_address_t * address,
u32 address_length, u32 is_del);
+void ip4_directed_broadcast (u32 sw_if_index, u8 enable);
+
void ip4_sw_interface_enable_disable (u32 sw_if_index, u32 is_enable);
int ip4_address_compare (ip4_address_t * a1, ip4_address_t * a2);