1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
; This is a comment.
; config options go here.
server:
serve-expired: yes
prefetch: yes
forward-zone: name: "." forward-addr: 216.0.0.1
CONFIG_END
SCENARIO_BEGIN Zero ttl answer needs to override servfail in cache.
RANGE_BEGIN 0 100
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR RD RA SERVFAIL
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
ENTRY_END
RANGE_END
RANGE_BEGIN 200 300
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 0 IN A 10.20.30.40
ENTRY_END
RANGE_END
STEP 1 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
STEP 10 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA SERVFAIL
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
ENTRY_END
; enough to pass by the TTL of the servfail answer in cache
STEP 50 TIME_PASSES ELAPSE 5
; this query triggers a prefetch
STEP 210 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
STEP 220 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA SERVFAIL
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
ENTRY_END
; this query gets the 0ttl answer
STEP 230 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
www.example.com. IN A
ENTRY_END
STEP 240 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
www.example.com. IN A
SECTION ANSWER
www.example.com. 0 IN A 10.20.30.40
ENTRY_END
SCENARIO_END
|
