NAME

        SV_RFC3596_2_5_PTR_type - PTR type

VERIFICATION POINTS

        Verify that a NUT transmits correct message including PTR type in the QTYPE field.

Query type PTR.

Header section field has the following value.

 QR : 0

 QDCOUNT : 1

 ANCOUNT : 0

 NSCOUNT : 0

 ARCOUNT : 0


Question section format


                                1  1  1  1  1  1
  0  1  2  3  4  5  6  7  8  9  0  1  2  3  4  5
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
|                                               |
/                     QNAME                     /
/                                               /
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
|                     QTYPE                     |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
|                     QCLASS                    |
+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+
	
QNAME : 0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA

QTYPE : PTR (0x000C)

QCLASS : IN (0x0001)

TARGET

        Caching Server

SYNOPSIS

	SV_RFC3596_2_5_PTR_type.seq [-tooloption ...]: KOI tool option
	See also DNSConfig.pm

INITIALIZATION

Network Topology

                                                          1.0.5.0.e.f.f.3.         f.f.f.f.1.0.5.0.e.f.f.3.
                                 IP6.ARPA domain          IP6.ARPA domain          IP6.ARPA domain
        AP Server1 (TN)          DNS Server2              DNS Server3              DNS Server4
          |www.example.org         |A.ROOT.NET              |NS3.example.org         |NS4.example.org
          |3ffe:501:ffff:101::10   |3ffe:501:ffff:101::20   |3ffe:501:ffff:101::30   |3ffe:501:ffff:101::40 
          |192.168.1.10            |192.168.1.20            |192.168.1.30            |192.168.1.40
          |                        |                        |                        |
Net-y   --+--------+---------------+------------+-----------+------------------------+-- 3ffe:501:ffff:101::/64
                   |                            |                                        192.168.1/24
                   |                            |
                   |                            |1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA domain
                 Router (TN)                  DNS Server5
                   |3ffe:501:ffff:100::1         NS5.example.org
                   |192.168.0.1                  3ffe:501:ffff:101::50 
                   |                             192.168.1.50
                   |
                   |
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.


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
;
	

TEST PROCEDURE

        This test sequence is following.
                                                                        <--------------- TN ------------------>

    DNS Client1 (TN)             DNS Server1 (NUT)                  DNS Server2 DNS Server3 DNS Server4 DNS Server5
        |                              |                                 |           |           |           | 
        |----------------------------->|                                 |           |           |           |
        | 1. Send standard query       |                                 |           |           |           |
        |  QNAME                       |                                 |           |           |           |
        |   = 0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.                           |           |           |           |
        |     1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA                   |           |           |           |
        |  QTYPE=PTR                   |                                 |           |           |           |
        |                              |                                 |           |           |           |
        |                              |-------------------------------->|           |           |           |
        |                              | 2. Recv standard query          |           |           |           |
        |                              |  QNAME                          |           |           |           |
        |                              |   = 0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.        |           |           |
        |                              |     1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA|           |           |
        |                              |  QTYPE=PTR                      |           |           |           |
        |                              |                                 |           |           |           |
        |                              |<--------------------------------|           |           |           |
        |                              | 3. Send standard query response |           |           |           |
        |                              |  QNAME                          |           |           |           |
        |                              |   = 0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.        |           |           |
        |                              |     1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA|           |           |
        |                              |  QTYPE=PTR                      |           |           |           |
        |                              |  AUTHORITY Name                 |           |           |           |
        |                              |   = 1.0.5.0.e.f.f.3.IP6.ARPA    |           |           |           |
        |                              |  AUTHORITY NSDNAME              |           |           |           |
        |                              |   =NS3.example.org              |           |           |           |
        |                              |  ADDITIONAL Name                |           |           |           |
        |                              |   =NS3.example.org              |           |           |           |
        |                              |  ADDITIONAL Address             |           |           |           |
        |                              |   =192.168.1.30                 |           |           |           |
        |                              |                                 |           |           |           |
        |                              |                                 v           |           |           |
        |                              |                                             |           |           |
        |                              |-------------------------------------------->|           |           |
        |                              |             4. Recv standard query          |           |           |
        |                              |              QNAME                          |           |           |
        |                              |               = 0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.        |           |
        |                              |                 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA|           |
        |                              |              QTYPE=PTR                      |           |           |
        |                              |                                             |           |           |
        |                              |<--------------------------------------------|           |           |
        |                              |             5. Send standard query response |           |           |
        |                              |              QNAME                          |           |           |
        |                              |               = 0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.        |           |
        |                              |                 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA|           |
        |                              |              QTYPE=PTR                      |           |           |
        |                              |              AUTHORITY Name                 |           |           |
        |                              |               = f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA        |           |
        |                              |              AUTHORITY NSDNAME              |           |           |
        |                              |               = NS4.example.org             |           |           |
        |                              |              ADDITIONAL Name                |           |           |
        |                              |               = NS4.example.org             |           |           |
        |                              |              ADDITIONAL Address             |           |           |
        |                              |               = 192.168.1.40                |           |           |
        |                              |                                             |           |           |
        |                              |                                             v           |           |
        |                              |                                                         |           |
        |                              |-------------------------------------------------------->|           |
        |                              |                         6. Send standard query          |           |
        |                              |                          QNAME                          |           |
        |                              |                           = 0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.        |
        |                              |                             1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA|
        |                              |                          QTYPE=PTR                      |           |
        |                              |                                                         |           |
        |                              |<--------------------------------------------------------|           |
        |                              |                         7. Send standard query response |           |
        |                              |                          QNAME                          |           |
        |                              |                           = 0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.        |
        |                              |                             1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA|
        |                              |                          QTYPE=PTR                      |           |
        |                              |                          AUTHORITY Name                 |           |
        |                              |                           = 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA|
        |                              |                          AUTHORITY NSDNAME              |           |
        |                              |                           = NS5.example.org             |           |
        |                              |                          ADDITIONAL Name                |           |
        |                              |                           = NS5.example.org             |           |
        |                              |                          ADDITIONAL Address             |           |
        |                              |                           = 192.168.1.50                |           |
        |                              |                                                         |           |
        |                              |                                                         v           |
        |                              |                                                                     |
        |                              |-------------------------------------------------------------------->|
        |                              |                         8. Send standard query                      |
        |                              |                          QNAME                                      |
        |                              |                           = 0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.        |
        |                              |                             1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA|
        |                              |                          QTYPE=PTR                                  |
        |                              |                                                                     |
        |                              |<--------------------------------------------------------------------|
        |                              |                         9. Send standard query response             |
        |                              |                          QNAME                                      |
        |                              |                           = 0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.        |
        |                              |                             1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA|
        |                              |                          QTYPE=PTR                                  |
        |                              |                          ANSWER NAME                                |
        |                              |                           = 0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.        |
        |                              |                             1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA|
        |                              |                          ANSWER PTRDNAME                            |
        |                              |                           = A.example.org                           |
        |                              |                          AUTHORITY Name                             |
        |                              |                           = 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA|
        |                              |                          AUTHORITY NSDNAME                          |
        |                              |                           = NS5.example.org                         |
        |                              |                          ADDITIONAL Name                            |
        |                              |                           = NS5.example.org                         |
        |                              |                          ADDITIONAL Address                         |
        |                              |                           = 192.168.1.50                            |
        |                              |                                                                     |
        |<-----------------------------|                                                                     v
        | 10. Recv Standard query      |
        |                     response |
        |  QNAME                       |
        |   = 0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
        |     1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA
        |  QTYPE=PTR                   |
        |  ANSWER NAME                 |
        |   = 0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.
        |     1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA
        |  ANSWER PTRDNAME             |
        |   = A.example.org            |
        |  AUTHORITY Name              |
        |   = 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA
        |  AUTHORITY NSDNAME           |
        |   = NS5.example.org          |
        |  ADDITIONAL Name             |
        |   = NS5.example.org          |
        |  ADDITIONAL Address          |
        |   = 192.168.1.50             |
        |                              |
        v                              v

        1. TN send standard query
           QNAME=0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA, QTYPE=PTR to NUT.
        2. NUT transmits standard query to DNS Server2 (TN: root name server) (Judgment *2)

        3. TN send query response to NUT w/ AUTHORITY Name=1.0.5.0.e.f.f.3.IP6.ARPA,
           AUTHORITY Name Server=NS3.example.org.
        4. NUT transmits standard query
           QNAME=0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA,
           QTYPE=PTR to DNS Server3 (TN: NS3.example.org) (Judgment *4)

        5. TN send query response to NUT w/ AUTHORITY Name=f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA,
           AUTHORITY Name Server=NS4.example.org.
        6. NUT transmits standard query
           QNAME=0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA,
           QTYPE=PTR to DNS Server4 (TN: NS4.example.org) (Judgment *6)

        7. TN send query response to NUT w/ AUTHORITY Name=1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA,
           AUTHORITY Name Server=NS5.example.org.
        8. NUT transmits standard query
           QNAME=0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA,
           QTYPE=PTR to DNS Server5 (TN: NS5.example.org) (Judgment *8)

        9. TN send query response to NUT w/
           ANSWER Name=0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA,
           ANSWER Ptrdname=A.example.org to NUT.
        10. NUT transmits query response to DNS Client1 (TN) (Judgment *10)

Packet Description



1st packet.

Standard query from DNS Client1 (TN) to Server1 (NUT)
IP Header	Source Address	CL1_NETZ
	Destination Address	NUT_NETZ
UDP Header	Src Port	2000
	Dst Port	53
DNS Header	ID	0x1000
	QR	0
	OPCODE	0
	AA	0
	TC	0
	RD	0
	RA	0
	Z	0
	RCODE	0
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	0
	ARCOUNT	0
DNS Question section	QNAME	0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0. 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA
	QTYPE	PTR (0x000C)
	QCLASS	IN (0x0001)



2nd packet.

Standard query from DNS Server1 (NUT) to Server2 (TN)
IP Header	Source Address	NUT_NETZ
	Destination Address	SV2_NETY
UDP Header	Src Port	ANY
	Dst Port	53
DNS Header	ID	ANY
	QR	0
	OPCODE	0
	AA	0
	TC	0
	RD	0
	RA	0
	Z	Any
	RCODE	0
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	0
	ARCOUNT	0
DNS Question section	QNAME	0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0. 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA
	QTYPE	PTR (0x000C)
	QCLASS	IN (0x0001)



3rd packet.

Standard query response from DNS Server2 (TN) to Server1 (NUT)
IP Header	Source Address	SV2_NETY
	Destination Address	NUT_NETZ
UDP Header	Src Port	53
	Dst Port	Value that NUT uses
DNS Header	ID	Value that NUT uses
	QR	1
	OPCODE	0
	AA	0
	TC	0
	RD	0
	RA	0
	Z	0
	RCODE	0
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	1
	ARCOUNT	1
DNS Question section	QNAME	0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0. 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA
	QTYPE	PTR (0x000C)
	QCLASS	IN (0x0001)
DNS Authority section	NAME	1.0.5.0.e.f.f.3.IP6.ARPA (Pointer 0xC03C)
	TYPE	NS (0x0002)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	16
	NSDNAME	NS3.example.org
DNS Additional section	NAME	NS3.example.org (Pointer 0xC066)
	TYPE	A (0x0001)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	4
	ADDRESS	192.168.1.30



4th packet.

Standard query from DNS Server1 (NUT) to Server3 (TN)
IP Header	Source Address	NUT_NETZ
	Destination Address	SV3_NETY
UDP Header	Src Port	ANY
	Dst Port	53
DNS Header	ID	ANY
	QR	0
	OPCODE	0
	AA	0
	TC	0
	RD	0
	RA	0
	Z	Any
	RCODE	0
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	0
	ARCOUNT	0
DNS Question section	QNAME	0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0. 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA
	QTYPE	PTR (0x000C)
	QCLASS	IN (0x0001)



5th packet.

Standard query response from DNS Server3 (TN) to Server1 (NUT)
IP Header	Source Address	SV3_NETY
	Destination Address	NUT_NETZ
UDP Header	Src Port	53
	Dst Port	Value that NUT uses
DNS Header	ID	Value that NUT uses
	QR	1
	OPCODE	0
	AA	0
	TC	0
	RD	0
	RA	0
	Z	0
	RCODE	0
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	1
	ARCOUNT	1
DNS Question section	QNAME	0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0. 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA
	QTYPE	PTR (0x000C)
	QCLASS	IN (0x0001)
DNS Authority section	NAME	f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA (Pointer 0xC034)
	TYPE	NS (0x0002)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	16
	NSDNAME	NS4.example.org
DNS Additional section	NAME	NS4.example.org (Pointer 0xC066)
	TYPE	A (0x0001)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	4
	ADDRESS	192.168.1.40



6th packet.

Standard query from DNS Server1 (NUT) to Server4 (TN)
IP Header	Source Address	NUT_NETZ
	Destination Address	SV4_NETY
UDP Header	Src Port	ANY
	Dst Port	53
DNS Header	ID	ANY
	QR	0
	OPCODE	0
	AA	0
	TC	0
	RD	0
	RA	0
	Z	Any
	RCODE	0
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	0
	ARCOUNT	0
DNS Question section	QNAME	0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0. 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA
	QTYPE	PTR (0x000C)
	QCLASS	IN (0x0001)



7th packet.

Standard query response from DNS Server4 (TN) to Server1 (NUT)
IP Header	Source Address	SV4_NETY
	Destination Address	NUT_NETZ
UDP Header	Src Port	53
	Dst Port	Value that NUT uses
DNS Header	ID	Value that NUT uses
	QR	1
	OPCODE	0
	AA	0
	TC	0
	RD	0
	RA	0
	Z	0
	RCODE	0
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	1
	ARCOUNT	1
DNS Question section	QNAME	0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0. 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA
	QTYPE	PTR (0x000C)
	QCLASS	IN (0x0001)
DNS Authority section	NAME	1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA (Pointer 0xC02C)
	TYPE	NS (0x0002)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	16
	NSDNAME	NS5.example.org
DNS Additional section	NAME	NS5.example.org (Pointer 0xC066)
	TYPE	A (0x0001)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	4
	ADDRESS	192.168.1.50



8th packet.

Standard query from DNS Server1 (NUT) to Server5 (TN)
IP Header	Source Address	NUT_NETZ
	Destination Address	SV5_NETY
UDP Header	Src Port	ANY
	Dst Port	53
DNS Header	ID	ANY
	QR	0
	OPCODE	0
	AA	0
	TC	0
	RD	0
	RA	0
	Z	Any
	RCODE	0
	QDCOUNT	1
	ANCOUNT	0
	NSCOUNT	0
	ARCOUNT	0
DNS Question section	QNAME	0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0. 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA
	QTYPE	PTR (0x000C)
	QCLASS	IN (0x0001)



9th packet.

Standard query response from DNS Server5 (TN) to Server1 (NUT)
IP Header	Source Address	SV5_NETY
	Destination Address	NUT_NETZ
UDP Header	Src Port	53
	Dst Port	Value that NUT uses
DNS Header	ID	Value that NUT uses
	QR	1
	OPCODE	0
	AA	1
	TC	0
	RD	0
	RA	1
	Z	0
	RCODE	0
	QDCOUNT	1
	ANCOUNT	1
	NSCOUNT	1
	ARCOUNT	1
DNS Question section	QNAME	0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0. 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA
	QTYPE	PTR (0x000C)
	QCLASS	IN (0x0001)
DNS Answer section	NAME	0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0. 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA (Pointer 0xC00C)
	TYPE	PTR (0x000C)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	15
	NSDNAME	A.example.org
DNS Authority section	NAME	1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA (Pointer 0xC02C)
	TYPE	NS (0x0002)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	16
	NSDNAME	NS5.example.org
DNS Additional section	NAME	NS5.example.org (Pointer 0xC081)
	TYPE	A (0x0001)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	4
	ADDRESS	192.168.1.50



10th packet.

Standard query response from DNS Server1 (NUT) to Client (TN)
IP Header	Source Address	NUT_NETZ
	Destination Address	CL1_NETZ
UDP Header	Src Port	53
	Dst Port	2000
DNS Header	ID	0x1000
	QR	1
	OPCODE	0
	AA	0
	TC	0
	RD	0
	RA	0
	Z	Any
	RCODE	0
	QDCOUNT	1
	ANCOUNT	1
	NSCOUNT	1
	ARCOUNT	1
DNS Question section	QNAME	0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0. 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA
	QTYPE	PTR (0x000C)
	QCLASS	IN (0x0001)
DNS Answer section	NAME	0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0. 1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA (Pointer 0xC00C)
	TYPE	PTR (0x000C)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	15
	NSDNAME	A.example.org
DNS Authority section	NAME	1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA (Pointer 0xC02C)
	TYPE	NS (0x0002)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	16
	NSDNAME	NS5.example.org
DNS Additional section	NAME	NS5.example.org (Pointer 0xC066)
	TYPE	A (0x0001)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	4
	ADDRESS	192.168.1.50




Exp.


NUT_NETZ	DNS Server1's (NUT) Net-z address
CL1_NETZ	DNS Client1's (TN) Net-z address
SV2_NETY	DNS Server2's (TN) Net-y address
SV3_NETY	DNS Server3's (TN) Net-y address
SV4_NETY	DNS Server4's (TN) Net-y address
SV5_NETY	DNS Server5's (TN) Net-y address

JUDGMENT

        2. Received standard query including QNAME=0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA, QTYPE=PTR.
        4. Received standard query including QNAME=0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA, QTYPE=PTR.
        6. Received standard query including QNAME=0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA, QTYPE=PTR.
        8. Received standard query including QNAME=0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.1.0.f.f.f.f.1.0.5.0.e.f.f.3.IP6.ARPA, QTYPE=PTR.
       10. Received standard query response including correct <domain-name> in the PTRDNAME field.

TERMINATION

        None

REFERENCE

        RFC1034 DOMAIN NAMES - CONCEPTS AND FACILITIES
        3.6 Resource Records

        RFC1035 DOMAIN NAMES - IMPLEMENTATION AND SPECIFICATION
        3.2.1 Format 
        3.2.2 TYPE values 
        3.3.12. PTR RDATA format

        RFC3596 DNS Extensions to Support IPv6
        2.5 IP6.ARPA domain