; Check if the prefetch option works properly for messages stored in the global ; cache for non-ECS clients. The prefetch query needs to result in an ECS ; outgoing query based on the client's IP. ; Prefetch initiated via serve-expired. server: trust-anchor-signaling: no target-fetch-policy: "0 0 0 0 0" send-client-subnet: 1.2.3.4 max-client-subnet-ipv4: 21 module-config: "subnetcache iterator" verbosity: 3 access-control: 127.0.0.1 allow_snoop qname-minimisation: no minimal-responses: no serve-expired: yes serve-expired-ttl: 1 prefetch: yes stub-zone: name: "." stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET. CONFIG_END SCENARIO_BEGIN Test prefetch option for global cache with ECS enabled (initiated via serve-expired) ; K.ROOT-SERVERS.NET. RANGE_BEGIN 0 100 ADDRESS 193.0.14.129 ENTRY_BEGIN MATCH opcode qtype qname ednsdata ADJUST copy_id REPLY QR NOERROR SECTION QUESTION . IN NS SECTION ANSWER . IN NS K.ROOT-SERVERS.NET. SECTION ADDITIONAL HEX_EDNSDATA_BEGIN ;; we expect to receive empty HEX_EDNSDATA_END K.ROOT-SERVERS.NET. IN A 193.0.14.129 ENTRY_END ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION www.example.com. IN A SECTION AUTHORITY com. IN NS a.gtld-servers.net. SECTION ADDITIONAL a.gtld-servers.net. IN A 192.5.6.30 ENTRY_END RANGE_END ; a.gtld-servers.net. RANGE_BEGIN 0 100 ADDRESS 192.5.6.30 ENTRY_BEGIN MATCH opcode qtype qname ednsdata ADJUST copy_id REPLY QR NOERROR SECTION QUESTION com. IN NS SECTION ANSWER com. IN NS a.gtld-servers.net. SECTION ADDITIONAL HEX_EDNSDATA_BEGIN ;; we expect to receive empty HEX_EDNSDATA_END a.gtld-servers.net. IN A 192.5.6.30 ENTRY_END ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION www.example.com. IN A SECTION AUTHORITY example.com. IN NS ns.example.com. SECTION ADDITIONAL ns.example.com. IN A 1.2.3.4 ENTRY_END RANGE_END ; ns.example.com. RANGE_BEGIN 0 10 ADDRESS 1.2.3.4 ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION example.com. IN NS SECTION ANSWER example.com. IN NS ns.example.com. SECTION ADDITIONAL HEX_EDNSDATA_BEGIN ;; we expect to receive empty HEX_EDNSDATA_END ns.example.com. IN A 1.2.3.4 ENTRY_END ; response to query of interest ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION www.example.com. IN A SECTION ANSWER www.example.com. 10 IN A 10.20.30.40 SECTION AUTHORITY example.com. IN NS ns.example.com. SECTION ADDITIONAL ns.example.com. IN A 1.2.3.4 ENTRY_END RANGE_END ; ns.example.com. RANGE_BEGIN 11 100 ADDRESS 1.2.3.4 ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION example.com. IN NS SECTION ANSWER example.com. IN NS ns.example.com. SECTION ADDITIONAL HEX_EDNSDATA_BEGIN ;; we expect to receive empty HEX_EDNSDATA_END ns.example.com. IN A 1.2.3.4 ENTRY_END ; response to query of interest ENTRY_BEGIN MATCH opcode qtype qname ednsdata ADJUST copy_id copy_ednsdata_assume_clientsubnet REPLY QR NOERROR SECTION QUESTION www.example.com. IN A SECTION ANSWER www.example.com. 10 IN A 10.20.30.40 SECTION AUTHORITY example.com. IN NS ns.example.com. SECTION ADDITIONAL HEX_EDNSDATA_BEGIN ; client is 127.0.0.1 00 08 ; OPC 00 07 ; option length 00 01 ; Family 15 00 ; source mask, scopemask 7f 00 00 ; address HEX_EDNSDATA_END ns.example.com. IN A 1.2.3.4 ENTRY_END RANGE_END STEP 1 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www.example.com. IN A ENTRY_END ; This answer should be in the global cache (because no ECS from upstream) STEP 2 CHECK_ANSWER ENTRY_BEGIN MATCH all REPLY QR RD RA NOERROR SECTION QUESTION www.example.com. IN A SECTION ANSWER www.example.com. IN A 10.20.30.40 SECTION AUTHORITY example.com. IN NS ns.example.com. SECTION ADDITIONAL ns.example.com. IN A 1.2.3.4 ENTRY_END ; Try to trigger a prefetch with expired data STEP 3 TIME_PASSES ELAPSE 11 STEP 11 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www.example.com. IN A ENTRY_END ; This expired record came from the global cache and a prefetch is triggered. STEP 12 CHECK_ANSWER ENTRY_BEGIN MATCH all ttl REPLY QR RD RA NOERROR SECTION QUESTION www.example.com. IN A SECTION ANSWER www.example.com. 30 IN A 10.20.30.40 SECTION AUTHORITY example.com. 3589 IN NS ns.example.com. SECTION ADDITIONAL ns.example.com. 3589 IN A 1.2.3.4 ENTRY_END ;STEP 13 TRAFFIC ; Allow enough time to pass so that the expired record from the global cache ; cannot be used anymore. STEP 14 TIME_PASSES ELAPSE 1 ; Query again to verify that the record was prefetched and stored in the ECS ; cache. STEP 15 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www.example.com. IN A ENTRY_END ; This record came from the ECS cache. STEP 16 CHECK_ANSWER ENTRY_BEGIN MATCH all ttl REPLY QR RD RA NOERROR SECTION QUESTION www.example.com. IN A SECTION ANSWER www.example.com. 9 IN A 10.20.30.40 SECTION AUTHORITY example.com. 3599 IN NS ns.example.com. SECTION ADDITIONAL ns.example.com. 3599 IN A 1.2.3.4 ENTRY_END SCENARIO_END