- Fix storage of negative parent glue if that last resort fails.

git-svn-id: file:///svn/unbound/trunk@2127 be551aaa-1e26-0410-a405-d3ace91eadb9

diff --git a/doc/Changelog b/doc/Changelog
index 5486f13dc6db07ca9aa6056fe01aa33821ff04e2..b0047eb938b54f8d92a07c06d2ef542d1cd7c597 100644 (file)
--- a/doc/Changelog
+++ b/doc/Changelog
@@ -1,5 +1,6 @@
 1 June 2010: Wouter
        - Ignore Z flag in incoming messages too.
+       - Fix storage of negative parent glue if that last resort fails.
 
 31 May 2010: Wouter
        - Fix AD flag handling, it could in some cases mistakenly copy the AD 

diff --git a/iterator/iterator.c b/iterator/iterator.c
index 84a9b60e23812c2bdb9a3efd5df69d85a159d22c..7c3a67608b78ec386387c2730689514379fa4f38 100644 (file)
--- a/iterator/iterator.c
+++ b/iterator/iterator.c
@@ -1468,6 +1468,13 @@ processLastResort(struct module_qstate* qstate, struct iter_qstate* iq,
                }
        }
 
+       /* if this was a parent-side glue query itself, then store that
+        * failure in cache. */
+       if(iq->query_for_pside_glue && !iq->pside_glue)
+               iter_store_parentside_neg(qstate->env, &qstate->qinfo,
+                       iq->deleg_msg?iq->deleg_msg->rep:
+                       (iq->response?iq->response->rep:NULL));
+
        verbose(VERB_QUERY, "out of query targets -- returning SERVFAIL");
        /* fail -- no more targets, no more hope of targets, no hope 
         * of a response. */

diff --git a/testdata/iter_pclame.rpl b/testdata/iter_pclame.rpl
new file mode 100644 (file)
index 0000000..21273e3
--- /dev/null
+++ b/testdata/iter_pclame.rpl
@@ -0,0 +1,191 @@
+; config options
+server:
+       target-fetch-policy: "0 0 0 0 0"
+
+stub-zone:
+       name: "."
+       stub-addr: 193.0.14.129         # K.ROOT-SERVERS.NET.
+CONFIG_END
+
+SCENARIO_BEGIN Test resolution with recursion, parent child differ, lame domain
+; make sure it stops probing once is has cached all the badness.
+
+; K.ROOT-SERVERS.NET.
+RANGE_BEGIN 0 100
+       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 NS
+SECTION AUTHORITY
+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
+net. IN NS
+SECTION AUTHORITY
+net.   IN NS   e.gtld-servers.net.
+SECTION ADDITIONAL
+e.gtld-servers.net.    IN      A       192.12.94.30
+ENTRY_END
+
+RANGE_END
+
+; a.gtld-servers.net.
+RANGE_BEGIN 0 100
+       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 NS
+SECTION AUTHORITY
+example.com.   IN NS   ns.example.net.
+ENTRY_END
+RANGE_END
+
+; e.gtld-servers.net.
+RANGE_BEGIN 0 100
+       ADDRESS 192.12.94.30
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+net. IN NS
+SECTION ANSWER
+net.   IN NS   e.gtld-servers.net.
+SECTION ADDITIONAL
+e.gtld-servers.net.    IN      A       192.12.94.30
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode subdomain
+ADJUST copy_id copy_query
+REPLY QR NOERROR
+SECTION QUESTION
+example.net. IN NS
+SECTION AUTHORITY
+example.net.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.net.                IN      A       1.2.3.44
+ENTRY_END
+
+RANGE_END
+
+RANGE_BEGIN 0 200
+       ADDRESS 1.2.3.44
+ENTRY_BEGIN
+MATCH opcode 
+ADJUST copy_id copy_query
+REPLY QR SERVFAIL
+SECTION QUESTION
+example.net. IN NS
+SECTION ANSWER
+ENTRY_END
+
+RANGE_END
+
+; Does not respond to anything (servfail instead
+; of timeouts since this is easier to encode in .rpl file format).
+RANGE_BEGIN 0 200
+       ADDRESS 1.2.3.55
+ENTRY_BEGIN
+MATCH opcode 
+ADJUST copy_id copy_query
+REPLY QR SERVFAIL
+SECTION QUESTION
+example.net. IN NS
+SECTION ANSWER
+ENTRY_END
+
+RANGE_END
+
+STEP 1 QUERY
+ENTRY_BEGIN
+REPLY RD
+SECTION QUESTION
+www.example.com. IN A
+ENTRY_END
+
+; recursion happens here.
+STEP 20 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RD RA SERVFAIL
+SECTION QUESTION
+www.example.com. IN A
+SECTION ANSWER
+ENTRY_END
+
+STEP 30 QUERY
+ENTRY_BEGIN
+REPLY RD
+SECTION QUESTION
+ftp.example.com. IN A
+ENTRY_END
+
+; recursion happens here.
+STEP 40 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RD RA SERVFAIL
+SECTION QUESTION
+ftp.example.com. IN A
+SECTION ANSWER
+ENTRY_END
+
+
+; no more outgoing queries to .com or .net, all should be cached.
+
+STEP 101 QUERY
+ENTRY_BEGIN
+REPLY RD
+SECTION QUESTION
+mail.example.com. IN A
+ENTRY_END
+
+; recursion happens here.
+STEP 120 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RD RA SERVFAIL
+SECTION QUESTION
+mail.example.com. IN A
+SECTION ANSWER
+ENTRY_END
+
+SCENARIO_END

diff --git a/testdata/iter_pcnamech.rpl b/testdata/iter_pcnamech.rpl
new file mode 100644 (file)
index 0000000..a979101
--- /dev/null
+++ b/testdata/iter_pcnamech.rpl
@@ -0,0 +1,424 @@
+; config options
+server:
+       target-fetch-policy: "0 0 0 0 0"
+
+stub-zone:
+       name: "."
+       stub-addr: 193.0.14.129         # K.ROOT-SERVERS.NET.
+CONFIG_END
+
+SCENARIO_BEGIN Test resolution with parent child differ with extra child name.
+; child has extra name and it has to be used once the other one stops working.
+
+; K.ROOT-SERVERS.NET.
+RANGE_BEGIN 0 100
+       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 NS
+SECTION AUTHORITY
+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
+net. IN NS
+SECTION AUTHORITY
+net.   IN NS   e.gtld-servers.net.
+SECTION ADDITIONAL
+e.gtld-servers.net.    IN      A       192.12.94.30
+ENTRY_END
+
+RANGE_END
+
+; a.gtld-servers.net.
+RANGE_BEGIN 0 100
+       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 NS
+SECTION AUTHORITY
+example.com.    IN NS   ns.example.com.
+SECTION ADDITIONAL
+ns.example.com. IN A 1.2.3.44
+ENTRY_END
+RANGE_END
+
+; e.gtld-servers.net.
+RANGE_BEGIN 0 100
+       ADDRESS 192.12.94.30
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+net. IN NS
+SECTION ANSWER
+net.   IN NS   e.gtld-servers.net.
+SECTION ADDITIONAL
+e.gtld-servers.net.    IN      A       192.12.94.30
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode subdomain
+ADJUST copy_id copy_query
+REPLY QR NOERROR
+SECTION QUESTION
+example.net. IN NS
+SECTION AUTHORITY
+example.net.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.net.                IN      A       1.2.3.55
+ENTRY_END
+
+RANGE_END
+
+; the working version, until time 50.
+RANGE_BEGIN 0 50
+       ADDRESS 1.2.3.44
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+example.net. IN NS
+SECTION ANSWER
+example.net.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.net.                IN      A       1.2.3.55
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.net. IN A
+SECTION ANSWER
+ns.example.net. IN A   1.2.3.55
+SECTION AUTHORITY
+example.net.   IN NS   ns.example.net.
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.net. IN AAAA
+SECTION AUTHORITY
+example.net.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.net. IN A   1.2.3.55
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.com. IN A
+SECTION ANSWER
+ns.example.com. IN A   1.2.3.44
+SECTION AUTHORITY
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.com. IN AAAA
+SECTION AUTHORITY
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A   1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+example.com. IN NS
+SECTION ANSWER
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A 1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR 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.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A 1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+mail.example.com. IN A
+SECTION ANSWER
+mail.example.com. IN A 10.20.30.20
+SECTION AUTHORITY
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A 1.2.3.44
+ENTRY_END
+RANGE_END
+
+; Broken.   Does not respond to anything (servfail instead
+; of timeouts since this is easier to encode in .rpl file format).
+RANGE_BEGIN 0 50
+       ADDRESS 1.2.3.55
+ENTRY_BEGIN
+MATCH opcode 
+ADJUST copy_id copy_query
+REPLY QR SERVFAIL
+SECTION QUESTION
+example.net. IN NS
+SECTION ANSWER
+ENTRY_END
+RANGE_END
+
+RANGE_BEGIN 50 100
+       ADDRESS 1.2.3.44
+ENTRY_BEGIN
+MATCH opcode 
+ADJUST copy_id copy_query
+REPLY QR SERVFAIL
+SECTION QUESTION
+example.net. IN NS
+SECTION ANSWER
+ENTRY_END
+RANGE_END
+
+RANGE_BEGIN 50 100
+       ADDRESS 1.2.3.55
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+example.net. IN NS
+SECTION ANSWER
+example.net.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.net.                IN      A       1.2.3.55
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.net. IN A
+SECTION ANSWER
+ns.example.net. IN A   1.2.3.55
+SECTION AUTHORITY
+example.net.   IN NS   ns.example.net.
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.net. IN AAAA
+SECTION AUTHORITY
+example.net.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.net. IN A   1.2.3.55
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.com. IN A
+SECTION ANSWER
+ns.example.com. IN A   1.2.3.44
+SECTION AUTHORITY
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.com. IN AAAA
+SECTION AUTHORITY
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A   1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+example.com. IN NS
+SECTION ANSWER
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A 1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR 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.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A 1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+mail.example.com. IN A
+SECTION ANSWER
+mail.example.com. IN A 10.20.30.20
+SECTION AUTHORITY
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A 1.2.3.44
+ENTRY_END
+RANGE_END
+
+
+STEP 1 QUERY
+ENTRY_BEGIN
+REPLY RD
+SECTION QUESTION
+www.example.com. IN A
+ENTRY_END
+
+; recursion happens here.
+STEP 20 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.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com.        IN A    1.2.3.44
+ENTRY_END
+
+; server stops working.
+
+STEP 50 QUERY
+ENTRY_BEGIN
+REPLY RD
+SECTION QUESTION
+mail.example.com. IN A
+ENTRY_END
+
+STEP 60 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RD RA NOERROR
+SECTION QUESTION
+mail.example.com. IN A
+SECTION ANSWER
+mail.example.com. IN A 10.20.30.20
+SECTION AUTHORITY
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com.        IN A    1.2.3.44
+ENTRY_END
+
+; still pending query needs removal.
+STEP 70 QUERY
+ENTRY_BEGIN
+REPLY RD
+SECTION QUESTION
+ns.example.net. IN AAAA
+ENTRY_END
+
+STEP 71 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RD RA NOERROR
+SECTION QUESTION
+ns.example.net. IN AAAA
+SECTION ANSWER
+SECTION AUTHORITY
+example.net.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.net. IN A 1.2.3.55
+ENTRY_END
+
+
+SCENARIO_END

diff --git a/testdata/iter_pcnamechrec.rpl b/testdata/iter_pcnamechrec.rpl
new file mode 100644 (file)
index 0000000..f4c0197
--- /dev/null
+++ b/testdata/iter_pcnamechrec.rpl
@@ -0,0 +1,403 @@
+; config options
+server:
+       target-fetch-policy: "0 0 0 0 0"
+
+stub-zone:
+       name: "."
+       stub-addr: 193.0.14.129         # K.ROOT-SERVERS.NET.
+CONFIG_END
+
+SCENARIO_BEGIN Test resolution with parent child differ with pc child name.
+; child has extra name and it has to be used once the other one stops working.
+; the extra child name has parent-child trouble and needs its parent version.
+
+; K.ROOT-SERVERS.NET.
+RANGE_BEGIN 0 100
+       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 NS
+SECTION AUTHORITY
+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
+net. IN NS
+SECTION AUTHORITY
+net.   IN NS   e.gtld-servers.net.
+SECTION ADDITIONAL
+e.gtld-servers.net.    IN      A       192.12.94.30
+ENTRY_END
+
+RANGE_END
+
+; a.gtld-servers.net.
+RANGE_BEGIN 0 100
+       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 NS
+SECTION AUTHORITY
+example.com.    IN NS   ns.example.com.
+SECTION ADDITIONAL
+ns.example.com. IN A 1.2.3.44
+ENTRY_END
+RANGE_END
+
+; e.gtld-servers.net.
+RANGE_BEGIN 0 100
+       ADDRESS 192.12.94.30
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR NOERROR
+SECTION QUESTION
+net. IN NS
+SECTION ANSWER
+net.   IN NS   e.gtld-servers.net.
+SECTION ADDITIONAL
+e.gtld-servers.net.    IN      A       192.12.94.30
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode subdomain
+ADJUST copy_id copy_query
+REPLY QR NOERROR
+SECTION QUESTION
+example.net. IN NS
+SECTION AUTHORITY
+example.net.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.net.                IN      A       1.2.3.55
+ENTRY_END
+
+RANGE_END
+
+; the working version, until time 50.
+RANGE_BEGIN 0 50
+       ADDRESS 1.2.3.44
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+example.net. IN NS
+SECTION ANSWER
+example.net.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.net.                IN      A       1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.net. IN A
+SECTION ANSWER
+ns.example.net. IN A   1.2.3.44
+SECTION AUTHORITY
+example.net.   IN NS   ns.example.net.
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.net. IN AAAA
+SECTION AUTHORITY
+example.net.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.net. IN A   1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.com. IN A
+SECTION ANSWER
+ns.example.com. IN A   1.2.3.44
+SECTION AUTHORITY
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.com. IN AAAA
+SECTION AUTHORITY
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A   1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+example.com. IN NS
+SECTION ANSWER
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A 1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR 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.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A 1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+mail.example.com. IN A
+SECTION ANSWER
+mail.example.com. IN A 10.20.30.20
+SECTION AUTHORITY
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A 1.2.3.44
+ENTRY_END
+RANGE_END
+
+; Broken.   Does not respond to anything (servfail instead
+; of timeouts since this is easier to encode in .rpl file format).
+RANGE_BEGIN 0 50
+       ADDRESS 1.2.3.55
+ENTRY_BEGIN
+MATCH opcode 
+ADJUST copy_id copy_query
+REPLY QR SERVFAIL
+SECTION QUESTION
+example.net. IN NS
+SECTION ANSWER
+ENTRY_END
+RANGE_END
+
+RANGE_BEGIN 50 100
+       ADDRESS 1.2.3.44
+ENTRY_BEGIN
+MATCH opcode 
+ADJUST copy_id copy_query
+REPLY QR SERVFAIL
+SECTION QUESTION
+example.net. IN NS
+SECTION ANSWER
+ENTRY_END
+RANGE_END
+
+RANGE_BEGIN 50 100
+       ADDRESS 1.2.3.55
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+example.net. IN NS
+SECTION ANSWER
+example.net.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.net.                IN      A       1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.net. IN A
+SECTION ANSWER
+ns.example.net. IN A   1.2.3.44
+SECTION AUTHORITY
+example.net.   IN NS   ns.example.net.
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.net. IN AAAA
+SECTION AUTHORITY
+example.net.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.net. IN A   1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.com. IN A
+SECTION ANSWER
+ns.example.com. IN A   1.2.3.44
+SECTION AUTHORITY
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+ns.example.com. IN AAAA
+SECTION AUTHORITY
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A   1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+example.com. IN NS
+SECTION ANSWER
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A 1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR 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.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A 1.2.3.44
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY AA QR NOERROR
+SECTION QUESTION
+mail.example.com. IN A
+SECTION ANSWER
+mail.example.com. IN A 10.20.30.20
+SECTION AUTHORITY
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com. IN A 1.2.3.44
+ENTRY_END
+RANGE_END
+
+
+STEP 1 QUERY
+ENTRY_BEGIN
+REPLY RD
+SECTION QUESTION
+www.example.com. IN A
+ENTRY_END
+
+; recursion happens here.
+STEP 20 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.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com.        IN A    1.2.3.44
+ENTRY_END
+
+; server stops working.
+
+STEP 50 QUERY
+ENTRY_BEGIN
+REPLY RD
+SECTION QUESTION
+mail.example.com. IN A
+ENTRY_END
+
+STEP 60 CHECK_ANSWER
+ENTRY_BEGIN
+MATCH all
+REPLY QR RD RA NOERROR
+SECTION QUESTION
+mail.example.com. IN A
+SECTION ANSWER
+mail.example.com. IN A 10.20.30.20
+SECTION AUTHORITY
+example.com.   IN NS   ns.example.com.
+example.com.   IN NS   ns.example.net.
+SECTION ADDITIONAL
+ns.example.com.        IN A    1.2.3.44
+ENTRY_END
+
+SCENARIO_END