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https://github.com/freebsd/freebsd-src
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1838dec318
Release notes at
https://www.nlnetlabs.nl/news/2023/Jan/12/unbound-1.17.1-released/.
MFC after: 1 month
Merge commit '7699e1386a16236002b26107ffd2dcbde375e197' into main
168 lines
3.5 KiB
Plaintext
168 lines
3.5 KiB
Plaintext
; Check if an expired SERVFAIL answer stored in the global cache does not block
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; ECS queries to reach the ECS cache.
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server:
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trust-anchor-signaling: no
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target-fetch-policy: "0 0 0 0 0"
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send-client-subnet: 1.2.3.4
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max-client-subnet-ipv4: 21
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module-config: "subnetcache iterator"
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verbosity: 3
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access-control: 127.0.0.1 allow_snoop
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qname-minimisation: no
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minimal-responses: no
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serve-expired: yes
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prefetch: yes
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stub-zone:
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name: "example.com."
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stub-addr: 1.2.3.4
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CONFIG_END
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SCENARIO_BEGIN Test that expired SERVFAIL in global cache does not block clients to reach the ECS cache
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; ns.example.com.
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RANGE_BEGIN 0 10
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ADDRESS 1.2.3.4
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ENTRY_BEGIN
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MATCH opcode qtype qname
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ADJUST copy_id
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REPLY QR NOERROR
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SECTION QUESTION
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example.com. IN NS
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SECTION ANSWER
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example.com. IN NS ns.example.com.
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SECTION ADDITIONAL
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ns.example.com. IN A 1.2.3.4
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ENTRY_END
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; response to query of interest
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ENTRY_BEGIN
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MATCH opcode qtype qname
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ADJUST copy_id
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REPLY QR SERVFAIL
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SECTION QUESTION
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www.example.com. IN A
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ENTRY_END
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RANGE_END
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; ns.example.com.
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RANGE_BEGIN 11 100
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ADDRESS 1.2.3.4
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ENTRY_BEGIN
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MATCH opcode qtype qname
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ADJUST copy_id
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REPLY QR NOERROR
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SECTION QUESTION
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example.com. IN NS
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SECTION ANSWER
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example.com. IN NS ns.example.com.
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SECTION ADDITIONAL
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ns.example.com. IN A 1.2.3.4
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ENTRY_END
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; response to query of interest
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ENTRY_BEGIN
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MATCH opcode qtype qname ednsdata
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ADJUST copy_id copy_ednsdata_assume_clientsubnet
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REPLY QR NOERROR
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SECTION QUESTION
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www.example.com. IN A
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SECTION ANSWER
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www.example.com. 10 IN A 10.20.30.40
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SECTION AUTHORITY
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example.com. IN NS ns.example.com.
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SECTION ADDITIONAL
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HEX_EDNSDATA_BEGIN
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; client is 127.0.0.1
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00 08 ; OPC
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00 05 ; option length
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00 01 ; Family
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08 00 ; source mask, scopemask
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7f ; address
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HEX_EDNSDATA_END
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ns.example.com. IN A 1.2.3.4
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ENTRY_END
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RANGE_END
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STEP 1 QUERY
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ENTRY_BEGIN
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REPLY RD
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SECTION QUESTION
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www.example.com. IN A
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ENTRY_END
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; This answer should be in the global cache
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STEP 2 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH all
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REPLY QR RD RA SERVFAIL
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SECTION QUESTION
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www.example.com. IN A
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ENTRY_END
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; Bring the cached SERVFAIL to prefetch time
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STEP 10 TIME_PASSES ELAPSE 5
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STEP 11 QUERY
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ENTRY_BEGIN
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REPLY RD DO
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SECTION QUESTION
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www.example.com. IN A
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SECTION ADDITIONAL
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HEX_EDNSDATA_BEGIN
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00 08 00 05 ; OPC, optlen
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00 01 08 00 ; ip4, source 8, scope 0
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7f ; 127.0.0.0/8
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HEX_EDNSDATA_END
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ENTRY_END
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; This answer was cached but a prefetch was triggerred
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STEP 12 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH opcode qtype qname
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REPLY QR RD RA SERVFAIL
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SECTION QUESTION
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www.example.com. IN A
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ENTRY_END
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; Wait for the SERVFAIL to expire
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STEP 13 TIME_PASSES ELAPSE 2
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; Query again to verify that the record was prefetched and stored in the ECS
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; cache (because the server replied with ECS this time)
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STEP 14 QUERY
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ENTRY_BEGIN
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REPLY RD DO
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SECTION QUESTION
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www.example.com. IN A
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SECTION ADDITIONAL
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HEX_EDNSDATA_BEGIN
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00 08 00 05 ; OPC, optlen
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00 01 08 00 ; ip4, source 8, scope 0
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7f ; 127.0.0.0/8
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HEX_EDNSDATA_END
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ENTRY_END
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; This record came from the ECS cache
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STEP 15 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH all ttl
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REPLY QR RD RA DO NOERROR
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SECTION QUESTION
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www.example.com. IN A
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SECTION ANSWER
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www.example.com. 8 IN A 10.20.30.40
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SECTION AUTHORITY
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example.com. 3598 IN NS ns.example.com.
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SECTION ADDITIONAL
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HEX_EDNSDATA_BEGIN
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00 08 00 05 ; OPC, optlen
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00 01 08 08 ; ip4, source 8, scope 0
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7f ; 127.0.0.0/8
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HEX_EDNSDATA_END
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ns.example.com. 3598 IN A 1.2.3.4
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ENTRY_END
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SCENARIO_END
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