File: iter_cycle.rpl

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; 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 dependency cycle
; query for ns.example.com, needs ns.example.net, needs ns.example.com.

; 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 qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.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

ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.com. IN AAAA
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 qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN A
SECTION AUTHORITY
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 qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN AAAA
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 qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.com. IN A
SECTION AUTHORITY
example.com.	IN NS	ns.example.net.
SECTION ADDITIONAL
; note this will be scrubbed off
ns.example.net.	IN A 1.2.3.1
ENTRY_END

ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.com. IN AAAA
SECTION AUTHORITY
example.com.	IN NS	ns.example.net.
SECTION ADDITIONAL
; note this will be scrubbed off
ns.example.net.	IN A 1.2.3.1
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 qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN A
SECTION AUTHORITY
example.net.	IN NS	ns.example.com.
SECTION ADDITIONAL
; note this will be scrubbed off
ns.example.com.	IN A 1.2.3.2
ENTRY_END

ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.net. IN AAAA
SECTION AUTHORITY
example.net.	IN NS	ns.example.com.
SECTION ADDITIONAL
; note this will be scrubbed off
ns.example.com.	IN A 1.2.3.2
ENTRY_END
RANGE_END

STEP 1 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
ns.example.com. IN A
ENTRY_END

; recursion happens here.
; cycle detected and it fails.
STEP 20 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA SERVFAIL
SECTION QUESTION
ns.example.com. IN A
ENTRY_END

SCENARIO_END