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|
; Check if fallback to the parent side works when MAX_TARGET_NX is reached.
server:
module-config: "iterator"
trust-anchor-signaling: no
target-fetch-policy: "0 0 0 0 0"
verbosity: 3
access-control: 127.0.0.1 allow_snoop
qname-minimisation: no
minimal-responses: no
rrset-roundrobin: no
stub-zone:
name: "."
stub-addr: 193.0.14.129 # K.ROOT-SERVERS.NET.
CONFIG_END
SCENARIO_BEGIN Test the NXNS fallback
; 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 subdomain
ADJUST copy_id copy_query
REPLY QR NOERROR
SECTION QUESTION
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 subdomain
ADJUST copy_id copy_query
REPLY QR NOERROR
SECTION QUESTION
nonexistant.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
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 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. 10 IN A 1.2.3.4
ENTRY_END
ENTRY_BEGIN
MATCH opcode subdomain
ADJUST copy_id copy_query
REPLY QR NOERROR
SECTION QUESTION
nonexistant.com. IN A
SECTION AUTHORITY
nonexistant.com. IN NS ns.example.com.
SECTION ADDITIONAL
ns.example.com. 10 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
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
example.com. IN NS
SECTION ANSWER
example.com. IN NS ns1.nonexistant.com.
example.com. IN NS ns2.nonexistant.com.
example.com. IN NS ns3.nonexistant.com.
example.com. IN NS ns4.nonexistant.com.
example.com. IN NS ns5.nonexistant.com.
example.com. IN NS ns6.nonexistant.com.
example.com. IN NS ns7.nonexistant.com.
example.com. IN NS ns8.nonexistant.com.
example.com. IN NS ns9.nonexistant.com.
example.com. IN NS ns10.nonexistant.com.
example.com. IN NS ns11.nonexistant.com.
example.com. IN NS ns12.nonexistant.com.
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
ns.example.com. IN A
SECTION ANSWER
ns.example.com. 10 IN A 1.2.3.4
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 SOA ns.example.com. root.example.com. 4 14400 3600 604800 3600
ENTRY_END
ENTRY_BEGIN
MATCH opcode subdomain
ADJUST copy_id copy_query
REPLY QR NXDOMAIN
SECTION QUESTION
nonexistant.com. IN A
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
a.example.com. IN A
SECTION ANSWER
a.example.com. IN A 10.20.30.40
SECTION AUTHORITY
example.com. IN NS ns1.nonexistant.com.
example.com. IN NS ns2.nonexistant.com.
example.com. IN NS ns3.nonexistant.com.
example.com. IN NS ns4.nonexistant.com.
example.com. IN NS ns5.nonexistant.com.
example.com. IN NS ns6.nonexistant.com.
example.com. IN NS ns7.nonexistant.com.
example.com. IN NS ns8.nonexistant.com.
example.com. IN NS ns9.nonexistant.com.
example.com. IN NS ns10.nonexistant.com.
example.com. IN NS ns11.nonexistant.com.
example.com. IN NS ns12.nonexistant.com.
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
b.example.com. IN A
SECTION ANSWER
b.example.com. IN A 10.20.30.40
SECTION AUTHORITY
example.com. IN NS ns1.nonexistant.com.
example.com. IN NS ns2.nonexistant.com.
example.com. IN NS ns3.nonexistant.com.
example.com. IN NS ns4.nonexistant.com.
example.com. IN NS ns5.nonexistant.com.
example.com. IN NS ns6.nonexistant.com.
example.com. IN NS ns7.nonexistant.com.
example.com. IN NS ns8.nonexistant.com.
example.com. IN NS ns9.nonexistant.com.
example.com. IN NS ns10.nonexistant.com.
example.com. IN NS ns11.nonexistant.com.
example.com. IN NS ns12.nonexistant.com.
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
c.example.com. IN A
SECTION ANSWER
c.example.com. IN A 10.20.30.40
SECTION AUTHORITY
example.com. IN NS ns1.nonexistant.com.
example.com. IN NS ns2.nonexistant.com.
example.com. IN NS ns3.nonexistant.com.
example.com. IN NS ns4.nonexistant.com.
example.com. IN NS ns5.nonexistant.com.
example.com. IN NS ns6.nonexistant.com.
example.com. IN NS ns7.nonexistant.com.
example.com. IN NS ns8.nonexistant.com.
example.com. IN NS ns9.nonexistant.com.
example.com. IN NS ns10.nonexistant.com.
example.com. IN NS ns11.nonexistant.com.
example.com. IN NS ns12.nonexistant.com.
ENTRY_END
ENTRY_BEGIN
MATCH opcode qtype qname
ADJUST copy_id
REPLY QR NOERROR
SECTION QUESTION
d.example.com. IN A
SECTION ANSWER
d.example.com. IN A 10.20.30.40
SECTION AUTHORITY
example.com. IN NS ns1.nonexistant.com.
example.com. IN NS ns2.nonexistant.com.
example.com. IN NS ns3.nonexistant.com.
example.com. IN NS ns4.nonexistant.com.
example.com. IN NS ns5.nonexistant.com.
example.com. IN NS ns6.nonexistant.com.
example.com. IN NS ns7.nonexistant.com.
example.com. IN NS ns8.nonexistant.com.
example.com. IN NS ns9.nonexistant.com.
example.com. IN NS ns10.nonexistant.com.
example.com. IN NS ns11.nonexistant.com.
example.com. IN NS ns12.nonexistant.com.
ENTRY_END
RANGE_END
STEP 1 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
a.example.com. IN A
ENTRY_END
; This was resolved by asking the parent side nameservers
STEP 2 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
a.example.com. IN A
SECTION ANSWER
a.example.com. IN A 10.20.30.40
SECTION AUTHORITY
example.com. IN NS ns1.nonexistant.com.
example.com. IN NS ns2.nonexistant.com.
example.com. IN NS ns3.nonexistant.com.
example.com. IN NS ns4.nonexistant.com.
example.com. IN NS ns5.nonexistant.com.
example.com. IN NS ns6.nonexistant.com.
example.com. IN NS ns7.nonexistant.com.
example.com. IN NS ns8.nonexistant.com.
example.com. IN NS ns9.nonexistant.com.
example.com. IN NS ns10.nonexistant.com.
example.com. IN NS ns11.nonexistant.com.
example.com. IN NS ns12.nonexistant.com.
ENTRY_END
; The child side nameservers are now known to Unbound
; Query again, the child server nameservers will be asked now
STEP 3 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
b.example.com. IN A
ENTRY_END
; This was resolved by falling back to the parent side nameservers
STEP 4 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
b.example.com. IN A
SECTION ANSWER
b.example.com. IN A 10.20.30.40
SECTION AUTHORITY
example.com. IN NS ns1.nonexistant.com.
example.com. IN NS ns2.nonexistant.com.
example.com. IN NS ns3.nonexistant.com.
example.com. IN NS ns4.nonexistant.com.
example.com. IN NS ns5.nonexistant.com.
example.com. IN NS ns6.nonexistant.com.
example.com. IN NS ns7.nonexistant.com.
example.com. IN NS ns8.nonexistant.com.
example.com. IN NS ns9.nonexistant.com.
example.com. IN NS ns10.nonexistant.com.
example.com. IN NS ns11.nonexistant.com.
example.com. IN NS ns12.nonexistant.com.
ENTRY_END
; Query a third time, this will get the cached NXDOMAINs (no NX counter for
; those) and will go to the parent as a last resort. This query will test that
; we will not have resolution for the lame(parent side) addresses that could
; raise the NX counter because of no address addition to the delegation point
; (the same addresses are already there).
STEP 5 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
c.example.com. IN A
ENTRY_END
; This was resolved by going back to the parent side nameservers (child side
; was exhausted from cache and queries < MAX_TARGET_NX).
STEP 6 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
c.example.com. IN A
SECTION ANSWER
c.example.com. IN A 10.20.30.40
SECTION AUTHORITY
example.com. IN NS ns1.nonexistant.com.
example.com. IN NS ns2.nonexistant.com.
example.com. IN NS ns3.nonexistant.com.
example.com. IN NS ns4.nonexistant.com.
example.com. IN NS ns5.nonexistant.com.
example.com. IN NS ns6.nonexistant.com.
example.com. IN NS ns7.nonexistant.com.
example.com. IN NS ns8.nonexistant.com.
example.com. IN NS ns9.nonexistant.com.
example.com. IN NS ns10.nonexistant.com.
example.com. IN NS ns11.nonexistant.com.
example.com. IN NS ns12.nonexistant.com.
ENTRY_END
; Allow for the nameserver glue to expire
STEP 10 TIME_PASSES ELAPSE 11
; Query again for the parent side fallback
STEP 11 QUERY
ENTRY_BEGIN
REPLY RD
SECTION QUESTION
d.example.com. IN A
ENTRY_END
; This was resolved by falling back to the parent side nameservers
STEP 12 CHECK_ANSWER
ENTRY_BEGIN
MATCH all
REPLY QR RD RA NOERROR
SECTION QUESTION
d.example.com. IN A
SECTION ANSWER
d.example.com. IN A 10.20.30.40
SECTION AUTHORITY
example.com. IN NS ns1.nonexistant.com.
example.com. IN NS ns2.nonexistant.com.
example.com. IN NS ns3.nonexistant.com.
example.com. IN NS ns4.nonexistant.com.
example.com. IN NS ns5.nonexistant.com.
example.com. IN NS ns6.nonexistant.com.
example.com. IN NS ns7.nonexistant.com.
example.com. IN NS ns8.nonexistant.com.
example.com. IN NS ns9.nonexistant.com.
example.com. IN NS ns10.nonexistant.com.
example.com. IN NS ns11.nonexistant.com.
example.com. IN NS ns12.nonexistant.com.
ENTRY_END
SCENARIO_END
|
