- Fix to stop responses with TC flag from resulting in partial

responses. It retries to fetch the data elsewhere, or fails the
  query and in depth fix removes the TC flag from the cached item.

testdata/iter_auth_tc.rpl

@@ -55,11 +55,11 @@ a.gtld-servers.net.	IN 	A	192.5.6.30
 ENTRY_END
 
 ENTRY_BEGIN
-MATCH opcode qtype qname
-ADJUST copy_id
+MATCH opcode subdomain
+ADJUST copy_id copy_query
 REPLY QR NOERROR
 SECTION QUESTION
-www.example.com. IN A
+example.com. IN NS
 SECTION AUTHORITY
 example.com.	IN NS	ns.example.com.
 SECTION ADDITIONAL
@@ -82,6 +82,27 @@ SECTION ADDITIONAL
 ns.example.com.		IN 	A	1.2.3.4
 ENTRY_END
 
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR AA NOERROR
+SECTION QUESTION
+ns.example.com. IN A
+SECTION ANSWER
+ns.example.com.		IN 	A	1.2.3.4
+ENTRY_END
+
+ENTRY_BEGIN
+MATCH opcode qtype qname
+ADJUST copy_id
+REPLY QR AA NOERROR
+SECTION QUESTION
+ns.example.com. IN AAAA
+SECTION ANSWER
+SECTION AUTHORITY
+example.com.	IN NS	ns.example.com.
+ENTRY_END
+
 ENTRY_BEGIN
 MATCH opcode qtype qname
 ADJUST copy_id
@@ -109,15 +130,9 @@ ENTRY_END
 STEP 10 CHECK_ANSWER
 ENTRY_BEGIN
 MATCH all
-REPLY QR RD RA NOERROR
+REPLY QR RD RA SERVFAIL
 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
 
 SCENARIO_END

testdata/stub_auth_tc.tdir/stub_auth_tc.test

@@ -12,7 +12,7 @@ echo "> cat logfiles"
 cat fwd.log
 cat unbound.log
 echo "> check answer"
-if grep "10.20.30.42" outfile; then
+if grep "SERVFAIL" outfile; then
 	echo "OK"
 else
 	echo "Not OK"