NAME

        CL_RFC1035_4_2_1_not_depend_order - Not depend on response in order

VERIFICATION POINTS

        Verify that a NUT doesn't depend on response in order

Queries or their responses may be reordered by the network,

or by processing in name servers, so resolvers should not depend

on them being returned in order.

TARGET

        Client

SYNOPSIS

	CL_RFC1035_4_2_1_not_depend_order.seq [-tooloption ...]: KOI tool option
	See also DNSConfig.pm

INITIALIZATION

• Network Topology

        AP Server1(TN):B.example.com AP Server2(TN):C.example.com  DNS Server1(TN)
          |3ffe:501:ffff:101::60           |3ffe:501:ffff:101::70    |3ffe:501:ffff:101::20
          |192.168.1.60                    |192.168.1.70             |192.168.1.20
          |                                |                         |
Net-y   --+--------+-----------------------+-------------------------+--- 3ffe:501:ffff:101::/64 
                   |                                                      192.168.1/24
                   |
                   |
                 ROUTER1(TN)
                   |3ffe:501:ffff:100::1
                   |192.168.0.1
                   |
Net-z   --+--------+----------------------------------------------------- 3ffe:501:ffff:100::/64 
          |                                                               192.168.0/24
        DNS Client1(NUT)
           3ffe:501:ffff:100:XXXX
           192.168.0.10
	

	XXXX: EUI64 address
	

• Setup

	Set the DNS Server1(TN)'s address on NUT as above mentioned Network Topology.
	

• Pre-Sequence

	1. In order to send the query for A type(IN class) of AP Server1(TN):B.example.com to the DNS Server1(TN), 
	NUT send Echo Request(Echo Message) to AP Server1(TN):B.example.com.

	2. In order to send the query for A type(IN class) of AP Server2(TN):C.example.com to the DNS Server1(TN), 
	NUT send Echo Request(Echo Message) to AP Server2(TN):C.example.com.

	

TEST PROCEDURE

        This test sequence is following.

    DNS Client1 (NUT)                        DNS Server1 (TN)            AP Server1 (TN)        AP Server2 (TN)
        |                                              |                      |                      |
        |--------------------------------------------->|                      |                      |
        |           1. Send standard query             |                      |                      |
        |              QNAME=B.example.com             |                      |                      |
        |                                              |                      |                      |
        |--------------------------------------------->|                      |                      |
        |           2. Send standard query             |                      |                      |
        |              QNAME=C.example.com             |                      |                      |
        |                                              |                      |                      |
        |<---------------------------------------------|                      |                      |
        |           3. Standard query response         |                      |                      |
        |              QNAME=C.example.com             |                      |                      |
        |                                              |                      |                      |
        |----------------------------------------------|----------------------|--------------------->|
        |           4. Echo Request(Echo Message)      |                      |                      |
        |                                              |                      |                      |
        |<---------------------------------------------|                      |                      |
        |           5. Standard query response         |                      |                      |
        |              QNAME=B.example.com             |                      |                      |
        |                                              |                      |                      |
        |----------------------------------------------|--------------------->|                      |
        |           6. Echo Request(Echo Message)      |                      |                      |
        |                                              |                      |                      |
        v                                              v                      v                      v

        1. NUT send standard query QNAME=B.example.com to DNS Server1(TN).
                  Judgment (Check *1)
        2. NUT send standard query QNAME=C.example.com to DNS Server1(TN).
                  Judgment (Check *2)
        3. TN send standard query response QNAME=C.example.com to NUT.
        4. NUT send Echo Request(Echo Message) to to AP Server2(TN).
                  Judgment (Check *4)
        5. TN send standard query response QNAME=B.example.com to NUT.
        6. NUT send Echo Request(Echo Message) to to AP Server1(TN).
                  Judgment (Check *6)

• Packet Description


1st Packet

1. Standard query QNAME=B.example.com from DNS Client1 (NUT) to DNS Server1 (TN)
IP Header	Source Address	NUT_NETZ
	Destination Address	SV_NETY
UDP Header	Src Port	any
	Dst Port	53
DNS Header	ID	any
	QR	0
	OPCODE	0
	AA	any
	TC	0
	RD	any
	RA	any
	Z	any
	RCODE	any
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	0
	ARCOUNT	any
DNS Question section	QNAME	B.example.com
	QTYPE	A (0x0001)
	QCLASS	IN (0x0001)


2nd packet.

2. Standard query QNAME=C.example.com from DNS Client1 (NUT) to DNS Server1 (TN)
IP Header	Source Address	NUT_NETZ
	Destination Address	SV_NETY
UDP Header	Src Port	any
	Dst Port	53
DNS Header	ID	any
	QR	0
	OPCODE	0
	AA	any
	TC	0
	RD	any
	RA	any
	Z	any
	RCODE	any
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	0
	ARCOUNT	any
DNS Question section	QNAME	C.example.com
	QTYPE	A (0x0001)
	QCLASS	IN (0x0001)


3rd packet.

3. Standard query response QNAME=C.example.com from DNS Server1 (TN) to Client1 (NUT)
IP Header	Source Address	SV_NETY
	Destination Address	NUT_NETZ
UDP Header	Src Port	53
	Dst Port	Same as 2nd Packet's Src Port
DNS Header	ID	Same as 2nd Packet's ID
	QR	1
	OPCODE	0
	AA	1
	TC	0
	RD	Same as 2nd Packet's RD
	RA	0
	Z	0
	RCODE	0
	QDCOUNT	1
	ANCOUNT	1
	NSCOUNT	1
	ARCOUNT	1
DNS Question section	QNAME	C.example.com
	QTYPE	A (0x0001)
	QCLASS	IN (0x0001)
DNS Answer section	NAME	B.example.com (Pointer 0xC00C)
	TYPE	A (0x0001)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	4
	ADDRESS	192.168.1.70
DNS Authority section	NAME	example.com (Pointer 0xC00E)
	TYPE	NS (0x0002)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	6
	NSDNAME	NS1.example.com (NS1 + Pointer 0xC00E)
DNS Additional section	NAME	NS1.example.com (Pointer 0xC03B)
	TYPE	A (0x0001)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	4
	ADDRESS	192.168.1.20


4th Packet

4. Standard Echo Request(Echo Message) from DNS Client1 (NUT) to AP Server2 (TN)
IP Header	Source Address	NUT_NETZ
	Destination Address	AP2_NETY
ICMP	Type	8(Echo Message for IPv4)/128(Echo Request for IPv6)


5th packet.

5. Standard query response QNAME=B.example.com from DNS Server1 (TN) to Client1 (NUT)
IP Header	Source Address	SV_NETY
	Destination Address	NUT_NETZ
UDP Header	Src Port	53
	Dst Port	Same as 1st Packet's Src Port
DNS Header	ID	Same as 1st Packet's ID
	QR	1
	OPCODE	0
	AA	1
	TC	0
	RD	Same as 1st Packet's RD
	RA	0
	Z	0
	RCODE	0
	QDCOUNT	1
	ANCOUNT	1
	NSCOUNT	1
	ARCOUNT	1
DNS Question section	QNAME	B.example.com
	QTYPE	A (0x0001)
	QCLASS	IN (0x0001)
DNS Answer section	NAME	B.example.com (Pointer 0xC00C)
	TYPE	A (0x0001)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	4
	ADDRESS	192.168.1.60
DNS Authority section	NAME	example.com (Pointer 0xC00E)
	TYPE	NS (0x0002)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	6
	NSDNAME	NS1.example.com (NS1 + Pointer 0xC00E)
DNS Additional section	NAME	NS1.example.com (Pointer 0xC03B)
	TYPE	A (0x0001)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	4
	ADDRESS	192.168.1.20


6th Packet

6. Standard Echo Request(Echo Message) from DNS Client1 (NUT) to AP Server1 (TN)
IP Header	Source Address	NUT_NETZ
	Destination Address	AP_NETY
ICMP	Type	8(Echo Message for IPv4)/128(Echo Request for IPv6)


Exp.


NUT_NETZ	DNS Client1's (NUT) Net-z address
SV_NETY	DNS Server1's (TN) Net-y address
AP_NETY	AP Server1's (TN) Net-y address
AP2_NETY	AP Server2's (TN) Net-y address

JUDGMENT

        1. Received standard query QNAME=B.example.com from NUT.
        2. Received standard query QNAME=C.example.com from NUT.
        4. Received Echo Request(Echo Message) from NUT.
        6. Received Echo Request(Echo Message) from NUT.

TERMINATION

        If NUT has cache function, clear the cache.

REFERENCE

	RFC1035 DOMAIN NAMES - IMPLEMENTATION AND SPECIFICATION
	4.2.1. UDP usage