+dhcp_client_add_rx_address (dhcp_client_main_t * dcm, dhcp_client_t * c)
+{
+ /* Install a local entry for the offered address */
+ fib_prefix_t rx =
+ {
+ .fp_len = 32,
+ .fp_addr.ip4 = c->leased_address,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ };
+
+ fib_table_entry_special_add(fib_table_get_index_for_sw_if_index(
+ FIB_PROTOCOL_IP4,
+ c->sw_if_index),
+ &rx,
+ FIB_SOURCE_DHCP,
+ (FIB_ENTRY_FLAG_LOCAL));
+
+ /* And add the server's address as uRPF exempt so we can accept
+ * local packets from it */
+ fib_prefix_t server =
+ {
+ .fp_len = 32,
+ .fp_addr.ip4 = c->dhcp_server,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ };
+
+ fib_table_entry_special_add(fib_table_get_index_for_sw_if_index(
+ FIB_PROTOCOL_IP4,
+ c->sw_if_index),
+ &server,
+ FIB_SOURCE_URPF_EXEMPT,
+ (FIB_ENTRY_FLAG_DROP));
+}
+
+static void
+dhcp_client_remove_rx_address (dhcp_client_main_t * dcm, dhcp_client_t * c)
+{
+ fib_prefix_t rx =
+ {
+ .fp_len = 32,
+ .fp_addr.ip4 = c->leased_address,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ };
+
+ fib_table_entry_special_remove(fib_table_get_index_for_sw_if_index(
+ FIB_PROTOCOL_IP4,
+ c->sw_if_index),
+ &rx,
+ FIB_SOURCE_DHCP);
+ fib_prefix_t server =
+ {
+ .fp_len = 32,
+ .fp_addr.ip4 = c->dhcp_server,
+ .fp_proto = FIB_PROTOCOL_IP4,
+ };
+
+ fib_table_entry_special_remove(fib_table_get_index_for_sw_if_index(
+ FIB_PROTOCOL_IP4,
+ c->sw_if_index),
+ &server,
+ FIB_SOURCE_URPF_EXEMPT);
+}
+
+static void