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; When the triggering query includes ECS option, source prefix-length should
; be set to the shorter of the incoming query or server maximum cacheable prefix
; length
server:
val-override-date: "20070916134226"
target-fetch-policy: "0 0 0 0 0"
send-client-subnet: 1.2.3.4
max-client-subnet-ipv4: 17
module-config: "subnetcache validator iterator"
verbosity: 3
qname-minimisation: "no"
minimal-responses: no
stub-zone:
name: "."
stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET.
CONFIG_END
SCENARIO_BEGIN Test shortest source prefix-length
; K.ROOT-SERVERS.NET.
RANGE_BEGIN 0 100
ADDRESS 193.0.14.129
ENTRY_BEGIN
MATCH opcode qtype qname ednsdata
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
. IN NS
SECTION ANSWER
. IN NS K.ROOT-SERVERS.NET.
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
;; we expect to receive empty
HEX_EDNSDATA_END
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
www.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
RANGE_END
; a.gtld-servers.net.
RANGE_BEGIN 0 100
ADDRESS 192.5.6.30
ENTRY_BEGIN
MATCH opcode qtype qname ednsdata
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
com. IN NS
SECTION ANSWER
com. IN NS a.gtld-servers.net.
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
;; we expect to receive empty
HEX_EDNSDATA_END
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
www.example.com. IN A
SECTION AUTHORITY
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
ns.example.com. IN A 1.2.3.4
ENTRY_END
RANGE_END
; ns.example.com.
RANGE_BEGIN 0 100
ADDRESS 1.2.3.4
ENTRY_BEGIN
MATCH opcode qtype qname ednsdata
ADJUST copy_id copy_ednsdata_assume_clientsubnet
REPLY QR 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 1.2.3.4
ENTRY_END
; response to query of interest
ENTRY_BEGIN
MATCH opcode qtype qname ednsdata
ADJUST copy_id copy_ednsdata_assume_clientsubnet
REPLY 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.
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
; client is 127.0.0.1
00 08 ; OPC
00 06 ; option length
00 01 ; Family
10 00 ; source mask, scopemask
7f 00 ; address
HEX_EDNSDATA_END
ns.example.com. IN A 1.2.3.4
ENTRY_END
; client send /18, we expect /17
ENTRY_BEGIN
MATCH opcode qtype qname ednsdata
ADJUST copy_id copy_ednsdata_assume_clientsubnet
REPLY QR NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. IN A 10.20.30.50
SECTION AUTHORITY
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
; client is 127.1.0.1
00 08 ; OPC
00 07 ; option length
00 01 ; Family
11 00 ; source mask, scopemask
7f 01 00 ; address
HEX_EDNSDATA_END
ns.example.com. IN A 1.2.3.4
ENTRY_END
; client send /17, we return /18
ENTRY_BEGIN
MATCH opcode qtype qname ednsdata
ADJUST copy_id copy_ednsdata_assume_clientsubnet increment_ecs_scope
REPLY QR NOERROR
SECTION QUESTION
www.example.com. IN TXT
SECTION ANSWER
www.example.com. IN TXT "longer scope"
SECTION AUTHORITY
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
; client is 127.1.0.1
00 08 ; OPC
00 07 ; option length
00 01 ; Family
11 00 ; source mask, scopemask
7f 01 00 ; address
HEX_EDNSDATA_END
ns.example.com. IN A 1.2.3.4
ENTRY_END
RANGE_END
STEP 1 QUERY
ENTRY_BEGIN
HEX_ANSWER_BEGIN;
00 00 01 00 00 01 00 00 ;ID 0
00 00 00 01 03 77 77 77 ; www.example.com A? (DO)
07 65 78 61 6d 70 6c 65
03 63 6f 6d 00 00 01 00
01 00 00 29 10 00 00 00
80 00 00 0a
00 08 00 06 ; OPC, optlen
00 01 10 00 ; ip4, scope 16, source 0
7f 00 ;127.0.0.0/16
HEX_ANSWER_END
ENTRY_END
; recursion happens here.
STEP 10 CHECK_ANSWER
ENTRY_BEGIN
MATCH all ednsdata
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.
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
; client is 127.0.0.1
00 08 ; OPC
00 06 ; option length
00 01 ; Family
10 10 ; source mask, scopemask
7f 00 ; address
HEX_EDNSDATA_END
ns.example.com. IN A 1.2.3.4
ENTRY_END
STEP 11 QUERY
ENTRY_BEGIN
HEX_ANSWER_BEGIN;
00 00 01 00 00 01 00 00 ;ID 0
00 00 00 01 03 77 77 77 ; www.example.com A? (DO)
07 65 78 61 6d 70 6c 65
03 63 6f 6d 00 00 01 00
01 00 00 29 10 00 00 00
80 00 00 0b
00 08 00 07 ; OPC, optlen
00 01 12 00 ; ip4, scope 18, source 0
7f 01 00 ;127.1.0.0/18
HEX_ANSWER_END
ENTRY_END
; recursion happens here.
STEP 20 CHECK_ANSWER
ENTRY_BEGIN
MATCH all ednsdata
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. IN A 10.20.30.50
SECTION AUTHORITY
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
; client is 127.1.0.1
00 08 ; OPC
00 07 ; option length
00 01 ; Family
12 11 ; source mask, scopemask
7f 01 00 ; address
HEX_EDNSDATA_END
ns.example.com. IN A 1.2.3.4
ENTRY_END
STEP 21 QUERY
ENTRY_BEGIN
HEX_ANSWER_BEGIN;
00 00 01 00 00 01 00 00 ;ID 0
00 00 00 01 03 77 77 77 ; www.example.com TXT? (DO)
07 65 78 61 6d 70 6c 65
03 63 6f 6d 00 00 10 00
01 00 00 29 10 00 00 00
80 00 00 0b
00 08 00 07 ; OPC, optlen
00 01 11 00 ; ip4, scope 17, source 0
7f 01 00 ;127.1.0.0/17
HEX_ANSWER_END
ENTRY_END
; server returns /18, since we cache the result to max-client-subnet-ipv4 (/17),
; the initial answer returned to the client should also be capped to /17.
STEP 30 CHECK_ANSWER
ENTRY_BEGIN
MATCH all ednsdata
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN TXT
SECTION ANSWER
www.example.com. IN TXT "longer scope"
SECTION AUTHORITY
example.com. IN NS ns.example.com.
SECTION ADDITIONAL
HEX_EDNSDATA_BEGIN
; client is 127.1.0.1
00 08 ; OPC
00 07 ; option length
00 01 ; Family
11 11 ; source mask, scopemask
7f 01 00 ; address
HEX_EDNSDATA_END
ns.example.com. IN A 1.2.3.4
ENTRY_END
SCENARIO_END
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