; config options server: target-fetch-policy: "0 0 0 0 0" prefetch: "yes" minimal-responses: no stub-zone: name: "." stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET. CONFIG_END SCENARIO_BEGIN Test resolver prefetch and a moved domain 2. ; for slightly different query pattern. ; K.ROOT-SERVERS.NET. RANGE_BEGIN 0 500 ADDRESS 193.0.14.129 ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION . IN NS SECTION ANSWER . IN NS K.ROOT-SERVERS.NET. SECTION ADDITIONAL K.ROOT-SERVERS.NET. IN A 193.0.14.129 ENTRY_END ENTRY_BEGIN MATCH opcode subdomain ADJUST copy_id copy_query REPLY QR NOERROR SECTION QUESTION 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. (before sale of domain) RANGE_BEGIN 0 30 ADDRESS 192.5.6.30 ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION com. IN NS SECTION ANSWER com. IN NS a.gtld-servers.net. SECTION ADDITIONAL a.gtld-servers.net. IN A 192.5.6.30 ENTRY_END ENTRY_BEGIN MATCH opcode subdomain ADJUST copy_id copy_query REPLY QR NOERROR SECTION QUESTION example.com. IN A SECTION AUTHORITY example.com. 86400 IN NS old-ns.example.com. SECTION ADDITIONAL old-ns.example.com. 86400 IN A 192.168.0.1 ENTRY_END RANGE_END ; a.gtld-servers.net. (after sale of domain) RANGE_BEGIN 40 500 ADDRESS 192.5.6.30 ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR NOERROR SECTION QUESTION com. IN NS SECTION ANSWER com. IN NS a.gtld-servers.net. SECTION ADDITIONAL a.gtld-servers.net. IN A 192.5.6.30 ENTRY_END ENTRY_BEGIN MATCH opcode subdomain ADJUST copy_id copy_query REPLY QR NOERROR SECTION QUESTION example.com. IN A SECTION AUTHORITY example.com. 86400 IN NS new-ns.example.com. SECTION ADDITIONAL new-ns.example.com. 86400 IN A 172.16.0.1 ENTRY_END RANGE_END ; ns.example.com. first owner RANGE_BEGIN 0 500 ADDRESS 192.168.0.1 ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR AA NOERROR SECTION QUESTION example.com. IN NS SECTION ANSWER example.com. 300 IN NS old-ns.example.com. SECTION ADDITIONAL old-ns.example.com. 300 IN A 192.168.0.1 ENTRY_END ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR AA NOERROR SECTION QUESTION www.example.com. IN A SECTION ANSWER www.example.com. 300 IN A 10.1.1.1 SECTION AUTHORITY example.com. 300 IN NS old-ns.example.com. SECTION ADDITIONAL old-ns.example.com. 300 IN A 192.168.0.1 ENTRY_END RANGE_END ; ns.example.com. new owner RANGE_BEGIN 0 500 ADDRESS 172.16.0.1 ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR AA NOERROR SECTION QUESTION example.com. IN NS SECTION ANSWER example.com. 86400 IN NS new-ns.example.com. SECTION ADDITIONAL new-ns.example.com. 86400 IN A 172.16.0.1 ENTRY_END ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR AA NOERROR SECTION QUESTION old-ns.example.com. IN A SECTION ANSWER old-ns.example.com. 86400 IN A 172.16.0.1 SECTION AUTHORITY example.com. 86400 IN NS new-ns.example.com. SECTION ADDITIONAL new-ns.example.com. 86400 IN A 172.16.0.1 ENTRY_END ENTRY_BEGIN MATCH opcode qtype qname ADJUST copy_id REPLY QR AA NOERROR SECTION QUESTION www.example.com. IN A SECTION ANSWER www.example.com. 86400 IN A 10.2.2.2 SECTION AUTHORITY example.com. 86400 IN NS new-ns.example.com. SECTION ADDITIONAL new-ns.example.com. 86400 IN A 172.16.0.1 ENTRY_END RANGE_END STEP 1 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www.example.com. IN A ENTRY_END ; recursion happens here. STEP 10 CHECK_ANSWER ENTRY_BEGIN MATCH all ttl REPLY QR RD RA NOERROR SECTION QUESTION www.example.com. IN A SECTION ANSWER www.example.com. 300 IN A 10.1.1.1 SECTION AUTHORITY example.com. 300 IN NS old-ns.example.com. SECTION ADDITIONAL old-ns.example.com. 300 IN A 192.168.0.1 ENTRY_END ; after 40 secs still the cached answer STEP 20 TIME_PASSES ELAPSE 40 STEP 30 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www.example.com. IN A ENTRY_END ; recursion happens here. STEP 40 CHECK_ANSWER ENTRY_BEGIN MATCH all ttl REPLY QR RD RA NOERROR SECTION QUESTION www.example.com. IN A SECTION ANSWER www.example.com. 260 IN A 10.1.1.1 SECTION AUTHORITY example.com. 260 IN NS old-ns.example.com. SECTION ADDITIONAL old-ns.example.com. 260 IN A 192.168.0.1 ENTRY_END ; after 230 we are 30 seconds before expiry, prefetch happens. STEP 50 TIME_PASSES ELAPSE 230 STEP 60 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www.example.com. IN A ENTRY_END ; recursion happens here. STEP 70 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 10.1.1.1 SECTION AUTHORITY example.com. 30 IN NS old-ns.example.com. SECTION ADDITIONAL old-ns.example.com. 30 IN A 192.168.0.1 ENTRY_END STEP 80 TRAFFIC ; let traffic flow for prefetch to happen ; we updated from the old-ns. STEP 90 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www.example.com. IN A ENTRY_END ; recursion happens here. STEP 100 CHECK_ANSWER ENTRY_BEGIN MATCH all ttl REPLY QR RD RA NOERROR SECTION QUESTION www.example.com. IN A SECTION ANSWER www.example.com. 86400 IN A 10.2.2.2 SECTION AUTHORITY example.com. 86400 IN NS new-ns.example.com. SECTION ADDITIONAL new-ns.example.com. 86400 IN A 172.16.0.1 ENTRY_END ; the NS record times out after 31 seconds. STEP 160 TIME_PASSES ELAPSE 31 ; fetch it STEP 170 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www.example.com. IN A ENTRY_END ; recursion happens here. STEP 180 CHECK_ANSWER ENTRY_BEGIN MATCH all ttl REPLY QR RD RA NOERROR SECTION QUESTION www.example.com. IN A SECTION ANSWER www.example.com. 86369 IN A 10.2.2.2 SECTION AUTHORITY example.com. 86369 IN NS new-ns.example.com. SECTION ADDITIONAL new-ns.example.com. 86369 IN A 172.16.0.1 ENTRY_END ; a reply from cache STEP 190 QUERY ENTRY_BEGIN REPLY RD SECTION QUESTION www.example.com. IN A ENTRY_END ; recursion happens here. STEP 200 CHECK_ANSWER ENTRY_BEGIN MATCH all ttl REPLY QR RD RA NOERROR SECTION QUESTION www.example.com. IN A SECTION ANSWER www.example.com. 86369 IN A 10.2.2.2 SECTION AUTHORITY example.com. 86369 IN NS new-ns.example.com. SECTION ADDITIONAL new-ns.example.com. 86369 IN A 172.16.0.1 ENTRY_END SCENARIO_END