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do-ip6: no
; config options
; SPDX-License-Identifier: GPL-3.0-or-later
stub-addr: 193.0.14.129 # k.root-servers.net.
CONFIG_END
SCENARIO_BEGIN Test restriction on CNAME chain length.
; k.root-servers.net.
RANGE_BEGIN 0 100
ADDRESS 193.0.14.129
ENTRY_BEGIN
MATCH opcode qname
ADJUST copy_id copy_query
REPLY QR NOERROR
SECTION QUESTION
n1.tld. IN NS
SECTION ANSWER
n1.tld. IN CNAME n2.tld.
n2.tld. IN CNAME n3.tld.
n3.tld. IN CNAME n4.tld.
n4.tld. IN CNAME n5.tld.
n5.tld. IN CNAME n6.tld.
n6.tld. IN CNAME n7.sub.
SECTION AUTHORITY
sub. IN NS ns.sub.
SECTION ADDITIONAL
ns.sub. IN A 194.0.14.1
ENTRY_END
ENTRY_BEGIN
MATCH opcode qname
ADJUST copy_id copy_query
REPLY QR NOERROR
SECTION QUESTION
n2.tld. IN NS
SECTION ANSWER
n2.tld. IN CNAME n3.tld.
n3.tld. IN CNAME n4.tld.
n4.tld. IN CNAME n5.tld.
n5.tld. IN CNAME n6.tld.
n6.tld. IN CNAME n7.sub.
SECTION AUTHORITY
sub. IN NS ns.sub.
SECTION ADDITIONAL
ns.sub. IN A 194.0.14.1
ENTRY_END
; empty non-terminal for query name minimization
ENTRY_BEGIN
MATCH opcode subdomain
ADJUST copy_id copy_query
REPLY QR AA NOERROR
SECTION QUESTION
tld. IN NS
SECTION ANSWER
ENTRY_END
; sub. subdomains
ENTRY_BEGIN
MATCH opcode subdomain
ADJUST copy_id copy_query
REPLY QR NOERROR
SECTION QUESTION
sub. IN NS
SECTION AUTHORITY
sub. IN NS ns.sub.
SECTION ADDITIONAL
ns.sub. IN A 194.0.14.1
ENTRY_END
RANGE_END
; ns.sub.
RANGE_BEGIN 0 100
ADDRESS 194.0.14.1
ENTRY_BEGIN
MATCH opcode qname qtype
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
ns.sub. IN A
SECTION ANSWER
ns.sub. IN A 194.0.14.1
ENTRY_END
ENTRY_BEGIN
MATCH opcode qname qtype
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
ns.sub. IN AAAA
SECTION ANSWER
ENTRY_END
ENTRY_BEGIN
MATCH opcode qname qtype
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
n7.sub. IN A
SECTION ANSWER
n7.sub. IN CNAME n8.sub.
n8.sub. IN CNAME n9.sub.
n9.sub. IN CNAME n10.sub.
n10.sub. IN CNAME n11.sub.
n11.sub. IN CNAME n12.sub.
n12.sub. IN CNAME n13.sub.
n13.sub. IN CNAME n14.sub.
n14.sub. IN A 198.18.0.1
ENTRY_END
ENTRY_BEGIN
MATCH opcode qname qtype
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
loop7.sub. IN A
SECTION ANSWER
loop7.sub. IN CNAME loop8.sub.
loop8.sub. IN CNAME loop9.sub.
loop9.sub. IN CNAME loop10.sub.
loop10.sub. IN CNAME loop11.sub.
; loop11 -> loop7 -> ... -> loop11
loop11.sub. IN CNAME loop7.sub.
loop12.sub. IN CNAME loop13.sub.
loop13.sub. IN CNAME loop14.sub.
loop14.sub. IN A 198.18.0.1
ENTRY_END
RANGE_END
; maximum allowed chain length
STEP 10 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
n2.tld. IN A
ENTRY_END
STEP 11 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
n2.tld. IN A
SECTION ANSWER
n2.tld. IN CNAME n3.tld.
n3.tld. IN CNAME n4.tld.
n4.tld. IN CNAME n5.tld.
n5.tld. IN CNAME n6.tld.
n6.tld. IN CNAME n7.sub.
n7.sub. IN CNAME n8.sub.
n8.sub. IN CNAME n9.sub.
n9.sub. IN CNAME n10.sub.
n10.sub. IN CNAME n11.sub.
n11.sub. IN CNAME n12.sub.
n12.sub. IN CNAME n13.sub.
n13.sub. IN CNAME n14.sub.
n14.sub. IN A 198.18.0.1
ENTRY_END
; too long CNAME chain across two zones
STEP 20 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
n1.tld. IN A
ENTRY_END
STEP 21 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA SERVFAIL
SECTION QUESTION
n1.tld. IN A
SECTION ANSWER
n1.tld. IN CNAME n2.tld.
n2.tld. IN CNAME n3.tld.
n3.tld. IN CNAME n4.tld.
n4.tld. IN CNAME n5.tld.
n5.tld. IN CNAME n6.tld.
n6.tld. IN CNAME n7.sub.
n7.sub. IN CNAME n8.sub.
n8.sub. IN CNAME n9.sub.
n9.sub. IN CNAME n10.sub.
n10.sub. IN CNAME n11.sub.
n11.sub. IN CNAME n12.sub.
n12.sub. IN CNAME n13.sub.
n13.sub. IN CNAME n14.sub.
; This chain is too long (> 13):
; n14.sub. IN A 198.18.0.1
ENTRY_END
; CNAME loop detection
STEP 30 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
loop7.sub. IN A
ENTRY_END
STEP 31 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA SERVFAIL
SECTION QUESTION
loop7.sub. IN A
SECTION ANSWER
loop7.sub. IN CNAME loop8.sub.
loop8.sub. IN CNAME loop9.sub.
loop9.sub. IN CNAME loop10.sub.
loop10.sub. IN CNAME loop11.sub.
loop11.sub. IN CNAME loop7.sub.
ENTRY_END
SCENARIO_END
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