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- Fix that dns64 with subnetcache does not write ECS scoped

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answers to global cache. Thanks to Qifan Zhang, Palo Alto
  Networks, for the report.
This commit is contained in:
W.C.A. Wijngaards
2026-05-27 13:31:11 +02:00
parent a5324e58eb
commit b53504049c
5 changed files with 234 additions and 0 deletions
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testdata/subnet_dns64_lookup.crpl
Vendored
+224
View File
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server:
target-fetch-policy: "0 0 0 0 0"
access-control: 0.0.0.0/0 allow
send-client-subnet: 5.0.15.10
max-client-subnet-ipv4: 24
verbosity: 3
module-config: "dns64 subnetcache iterator"
qname-minimisation: no
minimal-responses: yes
dns64-prefix: 64:ff9b::0/96
stub-zone:
name: "."
stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET.
CONFIG_END
SCENARIO_BEGIN Subnet with DNS64 lookup
RANGE_BEGIN 0 100
ADDRESS 193.0.14.129
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR AA 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 AA NOERROR
SECTION QUESTION
a.gtld-servers.net. IN AAAA
SECTION AUTHORITY
net. IN SOA ns.example.com. root.example.com. 4 14400 3600 604800 3600
SECTION ADDITIONAL
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
RANGE_END
RANGE_BEGIN 0 100
ADDRESS 192.5.6.30
ENTRY_BEGIN
MATCH opcode subdomain
ADJUST copy_id copy_query
REPLY QR NOERROR
SECTION QUESTION
example.com. IN A
SECTION AUTHORITY
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
ns.example.com. IN A 5.0.15.10
ENTRY_END
RANGE_END
RANGE_BEGIN 0 100
ADDRESS 5.0.15.10
ENTRY_BEGIN
MATCH opcode qtype qname ednsdata
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
example.com. IN NS
SECTION ANSWER
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
;; we expect to receive empty
HEX_EDNSDATA_END
ns.example.com. IN A 5.0.15.10
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname ednsdata
ADJUST copy_id
REPLY QR AA NOERROR
SECTION QUESTION
ns.example.com. IN AAAA
SECTION ANSWER
SECTION AUTHORITY
example.com. IN SOA ns.example.com. root.example.com. 4 14400 3600 604800 3600
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
;; we expect to receive empty
HEX_EDNSDATA_END
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname ednsdata
ADJUST copy_id copy_query copy_ednsdata_assume_clientsubnet
REPLY QR AA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. IN A 4.3.0.3
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
; client is 10.0.3.0
00 08 ; OPC
00 07 ; option length
00 01 ; Family
18 00 ; source mask, scopemask
0a 00 03 ; address
HEX_EDNSDATA_END
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname ednsdata
ADJUST copy_id copy_query copy_ednsdata_assume_clientsubnet
REPLY QR AA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. IN A 4.3.0.4
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
; client is 10.0.4.0
00 08 ; OPC
00 07 ; option length
00 01 ; Family
18 00 ; source mask, scopemask
0a 00 04 ; address
HEX_EDNSDATA_END
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname ednsdata
ADJUST copy_id copy_query copy_ednsdata_assume_clientsubnet
REPLY QR AA NOERROR
SECTION QUESTION
www.example.com. IN AAAA
SECTION ANSWER
www.example.com. IN AAAA 2001:db8::3
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
; client is 10.0.3.0
00 08 ; OPC
00 07 ; option length
00 01 ; Family
18 00 ; source mask, scopemask
0a 00 03 ; address
HEX_EDNSDATA_END
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname ednsdata
ADJUST copy_id copy_query copy_ednsdata_assume_clientsubnet
REPLY QR AA NOERROR
SECTION QUESTION
www.example.com. IN AAAA
SECTION ANSWER
www.example.com. IN AAAA 2001:db8::4
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
; client is 10.0.4.0
00 08 ; OPC
00 07 ; option length
00 01 ; Family
18 00 ; source mask, scopemask
0a 00 04 ; address
HEX_EDNSDATA_END
ENTRY_END
RANGE_END
STEP 1 QUERY ADDRESS 10.0.3.1
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN AAAA
ENTRY_END
STEP 2 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN AAAA
SECTION ANSWER
;www.example.com. IN A 4.3.0.3
www.example.com. IN AAAA 2001:db8::3
SECTION AUTHORITY
SECTION ADDITIONAL
ENTRY_END
STEP 10 QUERY ADDRESS 10.0.4.1
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN AAAA
ENTRY_END
STEP 11 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN AAAA
SECTION ANSWER
;www.example.com. IN A 4.3.0.4
www.example.com. IN AAAA 2001:db8::4
SECTION AUTHORITY
SECTION ADDITIONAL
ENTRY_END
SCENARIO_END