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https://github.com/NLnetLabs/unbound.git
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e0745813f4
resilience of the server. The so-reuseport, harden-below-nxdomain, and minimal-responses options are enabled by default. They used to be disabled by default, waiting to make sure they worked. They are enabled by default now, and can be disabled explicitly by setting them to "no" in the unbound.conf config file. The reuseport and minimal options increases speed of the server, and should be otherwise harmless. The harden-below-nxdomain option works well together with the recently default enabled qname minimisation, this causes more fetches to use information from the cache. git-svn-id: file:///svn/unbound/trunk@4871 be551aaa-1e26-0410-a405-d3ace91eadb9
317 lines
5.8 KiB
Plaintext
317 lines
5.8 KiB
Plaintext
; config options
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server:
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target-fetch-policy: "0 0 0 0 0"
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qname-minimisation: "no"
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prefetch: "yes"
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minimal-responses: no
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stub-zone:
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name: "."
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stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET.
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CONFIG_END
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SCENARIO_BEGIN Test resolver prefetch of NS record for moved domain
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; K.ROOT-SERVERS.NET.
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RANGE_BEGIN 0 200
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ADDRESS 193.0.14.129
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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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. IN NS
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SECTION ANSWER
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. IN NS K.ROOT-SERVERS.NET.
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SECTION ADDITIONAL
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K.ROOT-SERVERS.NET. IN A 193.0.14.129
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ENTRY_END
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ENTRY_BEGIN
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MATCH opcode subdomain
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ADJUST copy_id copy_query
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REPLY QR NOERROR
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SECTION QUESTION
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example.com. IN A
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SECTION AUTHORITY
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com. IN NS a.gtld-servers.net.
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SECTION ADDITIONAL
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a.gtld-servers.net. IN A 192.5.6.30
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ENTRY_END
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RANGE_END
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; a.gtld-servers.net. (before sale of domain)
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RANGE_BEGIN 0 20
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ADDRESS 192.5.6.30
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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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com. IN NS
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SECTION ANSWER
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com. IN NS a.gtld-servers.net.
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SECTION ADDITIONAL
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a.gtld-servers.net. IN A 192.5.6.30
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ENTRY_END
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ENTRY_BEGIN
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MATCH opcode subdomain
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ADJUST copy_id copy_query
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REPLY QR NOERROR
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SECTION QUESTION
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example.com. IN A
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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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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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; a.gtld-servers.net. (after sale of domain)
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RANGE_BEGIN 30 200
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ADDRESS 192.5.6.30
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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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com. IN NS
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SECTION ANSWER
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com. IN NS a.gtld-servers.net.
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SECTION ADDITIONAL
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a.gtld-servers.net. IN A 192.5.6.30
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ENTRY_END
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ENTRY_BEGIN
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MATCH opcode subdomain
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ADJUST copy_id copy_query
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REPLY QR NOERROR
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SECTION QUESTION
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example.com. IN A
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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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ns.example.com. IN A 8.8.8.8
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ENTRY_END
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RANGE_END
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; ns.example.com. first owner
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RANGE_BEGIN 0 200
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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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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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www.example.com. IN A
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SECTION ANSWER
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www.example.com. 3600 IN A 10.20.30.40
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SECTION AUTHORITY
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example.com. 3600 IN NS ns.example.com.
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SECTION ADDITIONAL
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ns.example.com. 3600 IN A 1.2.3.4
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ENTRY_END
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RANGE_END
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; ns.example.com. new owner
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RANGE_BEGIN 0 200
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ADDRESS 8.8.8.8
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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 8.8.8.8
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ENTRY_END
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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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www.example.com. IN A
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SECTION ANSWER
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www.example.com. 3600 IN A 88.88.88.88
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SECTION AUTHORITY
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example.com. 3600 IN NS ns.example.com.
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SECTION ADDITIONAL
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ns.example.com. 3600 IN A 8.8.8.8
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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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; recursion happens here.
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STEP 5 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH all ttl
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REPLY QR RD RA 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. 3600 IN A 10.20.30.40
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SECTION AUTHORITY
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example.com. 3600 IN NS ns.example.com.
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SECTION ADDITIONAL
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ns.example.com. 3600 IN A 1.2.3.4
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ENTRY_END
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STEP 10 QUERY
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ENTRY_BEGIN
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REPLY RD
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SECTION QUESTION
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example.com. IN NS
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ENTRY_END
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; recursion happens here.
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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 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. 3600 IN NS ns.example.com.
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SECTION AUTHORITY
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SECTION ADDITIONAL
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ns.example.com. 3600 IN A 1.2.3.4
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ENTRY_END
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; after 1800 secs still the cached answer
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STEP 20 TIME_PASSES ELAPSE 1800
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STEP 30 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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; recursion happens here.
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STEP 40 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH all ttl
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REPLY QR RD RA 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. 1800 IN A 10.20.30.40
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SECTION AUTHORITY
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example.com. 1800 IN NS ns.example.com.
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SECTION ADDITIONAL
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ns.example.com. 1800 IN A 1.2.3.4
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ENTRY_END
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STEP 44 QUERY
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ENTRY_BEGIN
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REPLY RD
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SECTION QUESTION
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example.com. IN NS
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ENTRY_END
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; recursion happens here.
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STEP 45 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH all ttl
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REPLY QR RD RA 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. 1800 IN NS ns.example.com.
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SECTION AUTHORITY
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SECTION ADDITIONAL
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ns.example.com. 1800 IN A 1.2.3.4
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ENTRY_END
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; after 1440 we are 360 seconds before the expiry
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STEP 50 TIME_PASSES ELAPSE 1440
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STEP 60 QUERY
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ENTRY_BEGIN
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REPLY RD
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SECTION QUESTION
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example.com. IN NS
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ENTRY_END
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; recursion happens here.
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STEP 70 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH all ttl
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REPLY QR RD RA 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. 360 IN NS ns.example.com.
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SECTION AUTHORITY
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SECTION ADDITIONAL
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ns.example.com. 360 IN A 1.2.3.4
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ENTRY_END
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STEP 80 TRAFFIC
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; let traffic flow for prefetch to happen
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; check result of that prefetch
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STEP 90 QUERY
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ENTRY_BEGIN
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REPLY RD
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SECTION QUESTION
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example.com. IN NS
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ENTRY_END
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; recursion happens here.
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; because the prefetch+current makes old-NS expired, new delegation is picked up
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STEP 91 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH all ttl
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REPLY QR RD RA 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. 3600 IN NS ns.example.com.
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SECTION AUTHORITY
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SECTION ADDITIONAL
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ns.example.com. 3600 IN A 8.8.8.8
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ENTRY_END
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STEP 100 TIME_PASSES ELAPSE 2360
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STEP 120 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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; recursion happens here.
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STEP 130 CHECK_ANSWER
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ENTRY_BEGIN
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MATCH all ttl
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REPLY QR RD RA 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. 3600 IN A 88.88.88.88
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SECTION AUTHORITY
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example.com. 1240 IN NS ns.example.com.
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SECTION ADDITIONAL
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ns.example.com. 1240 IN A 8.8.8.8
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ENTRY_END
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SCENARIO_END
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