NAME

        SV_RFC1034_4_3_1_NoRecursive - The name server implement non-recursive queries.

VERIFICATION POINTS

        Verify that a NUT returns the response contains an error, the answer, or a referral to some other
        server 'closer' to the answer when server can answer queries using only local information.

TARGET

        Authoritative Server (No-recursive)

SYNOPSIS

	SV_RFC1034_4_3_1_NoRecursive.seq [-tooloption ...]: KOI tool option
	See also DNSConfig.pm

INITIALIZATION

Network Topology

                                 . domain
        AP Server1 (TN)          DNS Server2
          |A.example.com           |
          |A.example.org           |A.ROOT.NET
          |3ffe:501:ffff:101::10   |3ffe:501:ffff:101::20 
          |192.168.1.10            |192.168.1.20
          |                        |
Net-y   --+--------+---------------+---------------------------------------------------- 3ffe:501:ffff:101::/64
                   |                                                                     192.168.1/24
                   |
                   |
                 Router (TN)
                   |3ffe:501:ffff:100::1
                   |192.168.0.1
                   |
                   |
Net-z   --+--------+-----------------+-------- 3ffe:501:ffff:100::/64
          |                          |          192.168.0/24
          |                          |
        DNS Server1 (NUT)          DNS Client1 (TN)
           3ffe:501:ffff:100::XXXX    3ffe:501:ffff:100::20 
           192.168.0.10               192.168.0.20
	

	XXXX: EUI64

Setup

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

Configure the Server1's (NUT) zone file to response query from TN.

Enable non-recursive mode

Example of root server list:

For IPv4:

.                       3600000         IN      NS      A.ROOT.NET.
A.ROOT.NET.             3600000                 A       192.168.1.20

For IPv6:

.                       3600000         IN      NS      A.ROOT.NET.
A.ROOT.NET.             3600000                 AAAA    3ffe:501:ffff:101::20

Example of example.com zone file:

$TTL    86400           ; TTL of 1 day
@ IN SOA NS1.example.com. root.example.com. (
	2005081600	; serial
	3600		; refresh every 1 hr
	900		; retry every 15 min
	604800		; expire after a week
	3600		; Minimum TTL of a 1 hr
)
;
	IN	NS	NS1.example.com.
NS1	IN	A	192.168.0.10
;
A	IN	A	192.168.1.10

TEST PROCEDURE

        This test sequence is following.

    DNS Client1 (TN)             DNS Server1 (NUT)
        |                              |
        |----------------------------->|
        | 1. Send standard query       |
        |    QNAME=A.example.com       |
        |    QTYPE=A                   |
        |                              |
        |<-----------------------------|
        | 2. Standard query response   |
        |  RA = 0                      |
        |  QNAME=A.example.com         |
        |  QTYPE=A                     |
        |  ANSWER Name                 |
        |           = A.example.com    |
        |  ANSWER Address              |
        |           = 192.168.1.10     |
        |  AUTHORITY Name              |
        |           = example.com      |
        |  AUTHORITY Name Server       |
        |           = NS1.example.com  |
        |  ADDITIONAL Name             |
        |           = NS1.example.com  |
        |  ADDITIONAL Address          |
        |           = 192.168.0.10     |
        |                              |
        |----------------------------->|
        | 3. Send standard query       |
        |  QNAME = A.example.org       |
        |  QTYPE = A                   |
        |                              |
        |<-----------------------------|
        | 4. Standard query response   |
        |                              |
        |  RA = 0                      |
        |  RCODE = 0                   |
        |  QNAME = A.example.org       |
        |  QTYPE = A                   |
        |  AUTHORITY Name              |
        |           = <ROOT>           |
        |  AUTHORITY Name Server       |
        |           = A.ROOT.NET       |
        |                              |
        |            or                |
        |                              |
        |  RA = 0                      |
        |  RCODE = 3                   |
        |  QNAME = A.example.org       |
        |  QTYPE = A                   |
        |                              |
        v                              v

        This test sequence is following.

        1. DNS Client1 (TN) sends standard query QNAME=A.example.com, QTYPE=A to NUT.
        2. DNS Server1 (NUT) transmits standard query response to DNS Client1 (TN). (Judgment *2)
        3. DNS Client1 (TN) sends standard query QNAME=A.example.org, QTYPE=A to DNS Server1 (NUT).
        4. DNS Server1 (NUT) transmits standard query response to DNS Client1 (TN) with AUTHORITY Name=<ROOT>, AUTHORITY Name server
           A.ROOT.NET.
           or
           DNS Server1 (NUT) returns the response contains an error, the answer to DNS Client1 (TN).
           (Judgment *4)

Packet Description

1st packet.

Standard query from DNS Client1 (TN) to Server1 (NUT)
IP Header	Source Address	CL1_NETZ
IP Header	Destination Address	NUT_NETZ
UDP Header	Src Port	1000
UDP Header	Dst Port	53
DNS Header	ID	0x1000
	QR	0
	OPCODE	0
	AA	0
	TC	0
	RD	1
	RA	0
	Z	0
	RCODE	0
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	0
	ARCOUNT	0
DNS Question section	QNAME	A.example.com
	QTYPE	A (0x0001)
	QCLASS	IN (0x0001)

2nd packet.

Standard query response from DNS Server1 (NUT) to Client1 (TN)
IP Header	Source Address	NUT_NETZ
IP Header	Destination Address	CL1_NETZ
UDP Header	Src Port	53
UDP Header	Dst Port	1000
DNS Header	ID	0x1000
	QR	1
	OPCODE	0
	AA	1
	TC	0
	RD	1
	RA	0
	Z	ANY
	RCODE	0
	QDCOUNT	1
	ANCOUNT	1
	NSCOUNT	1
	ARCOUNT	1
DNS Question section	QNAME	A.example.com
	QTYPE	A (0x0001)
	QCLASS	IN (0x0001)
DNS Answer section	NAME	A.example.com (Pointer 0xC00C)
	TYPE	A (0x0001)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	4
	ADDRESS	192.168.1.10
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	192.168.0.10

3rd packet.

Standard query from DNS Client1 (TN) to Server1 (NUT)
IP Header	Source Address	CL1_NETZ
IP Header	Destination Address	NUT_NETZ
UDP Header	Src Port	2000
UDP Header	Dst Port	53
DNS Header	ID	0x2000
	QR	0
	OPCODE	0
	AA	0
	TC	0
	RD	1
	RA	0
	Z	0
	RCODE	0
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	0
	ARCOUNT	0
DNS Question section	QNAME	A.example.org
	QTYPE	A (0x0001)
	QCLASS	IN (0x0001)

4th packet.

Standard query response from DNS Server1 (NUT) to Client1 (TN)
IP Header	Source Address	NUT_NETZ
IP Header	Destination Address	CL1_NETZ
UDP Header	Src Port	53
UDP Header	Dst Port	2000
DNS Header	ID	0x2000
	QR	1
	OPCODE	0
	AA	0
	TC	0
	RD	1
	RA	0
	Z	ANY
	*RCODE*	0
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	1
	ARCOUNT	0
DNS Question section	QNAME	A.example.org
	QTYPE	A (0x0001)
	QCLASS	IN (0x0001)
*DNS Authority section*	NAME	.
	TYPE	NS (0x0002)
	CLASS	IN (0x0001)
	TTL	3600000 sec
	RDLENGTH	12
	NSDNAME	A.ROOT.NET

Standard query response from DNS Server1 (NUT) to Client1 (TN)
IP Header	Source Address	NUT_NETZ
IP Header	Destination Address	CL1_NETZ
UDP Header	Src Port	53
UDP Header	Dst Port	2000
DNS Header	ID	0x2000
	QR	1
	OPCODE	0
	AA	0
	TC	0
	RD	1
	RA	0
	Z	ANY
	*RCODE*	3
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	0
	ARCOUNT	0
DNS Question section	QNAME	A.example.org
	QTYPE	A (0x0001)
	QCLASS	IN (0x0001)

Exp.

NUT_NETZ	DNS Server1's (NUT) Net-z address
CL1_NETZ	DNS Client1's (TN) Net-z address

JUDGMENT

        2. Received standard query response with Recursion Available (RA) bit is set
        4. Received standard query response containing a referral to other server 'closer'
            or
           Received standard query response containing a error (RCODE=3).

TERMINATION

        None

REFERENCE

        RFC1034 DOMAIN NAMES - CONCEPTS AND FACILITIES
        4. NAME SERVERS
        4.3.1. Queries and responses