NAME

        SV_RFC3403_4_1_multi_NAPTR - Multiple NAPTR resource records with several ORDER and PREFERENCE

VERIFICATION POINTS

        Verify that a NUT transmits correct message including multiple NAPTR resource records with several ORDER and PREFERENCE

NAPTR RDATA field

ORDER :

A 16-bit unsigned integer specifying the order in which the NAPTR records MUST be processed in order to accurately represent the ordered list of Rules.The ordering is from lowest to highest. If two records have the same order value then they are considered to be the same rule and should be selected based on the combination of the Preference values and Services offered.

PREFERENCE :

Although it is called "preference" in deference to DNS terminology, this field is equivalent to the Priority value in the DDDS Algorithm. It is a 16-bit unsigned integer that specifies the order in which NAPTR records with equal Order values SHOULD be processed, low numbers being processed before high numbers. This is similar to the preference field in an MX record, and is used so domain administrators can direct clients towards more capable hosts or lighter weight protocols. A client MAY look at records with higher preference values if it has a good reason to do so such as not supporting some protocol or service very well.

TARGET

        Authoritative Server

SYNOPSIS

	SV_RFC3403_4_1_multi_NAPTR.seq [-tooloption ...]: KOI tool option
	See also DNSConfig.pm

INITIALIZATION

Network Topology

        AP Server1 (TN)
          |3ffe:501:ffff:101::10
          |192.168.1.10
          |
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 
           3ffe:501:ffff:100::10
           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 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

Example of 1.1.1.1.0.9.1.8.e164.arpa. domain zone file:

$TTL	86400		; TTL of 1 day
@ IN SOA NS1.example.com. root.example.com. (
	2005081600	; serial
	3600		; refresh after 1 hr
	900		; retry after 15 min
	604800		; expire after 1 week
	3600		; Minimum TTL of 1 hr
)
;
	IN	NS	NS1.example.com.
;
1.0.0.0	IN	NAPTR	100	10	"U"	"sip+E2U"	"!^.*$!sip:info1@example.com!i"	.
;
1.0.0.0	IN	NAPTR	100	11	"U"	"sip+E2U"	"!^.*$!sip:info2@example.com!i"	.
;
1.0.0.0	IN	NAPTR	101	10	"U"	"sip+E2U"	"!^.*$!sip:info3@example.com!i"	.
;
1.0.0.0	IN	NAPTR	101	10	"U"	"sip+E2U"	"!^.*$!sip:info4@example.com!i"	.

TEST PROCEDURE

        This test sequence is following.

    DNS Client1 (TN)                       DNS Server1 (NUT)
        |                                      |
        |------------------------------------->|
        |   1. Send standard query             |
        |      QNAME = 1.0.0.0.1.1.1.1.0.9.1.8.e164.arpa.
        |      QTYPE= NAPTR                    |
        |                                      |
        |<-------------------------------------|
        |   2. Standard query response         |
        |                                      |
        |                                      |
        v                                      v

        1. TN send standard query
           QNAME=1.0.0.0.1.1.1.1.0.9.1.8.e164.arpa.,
           QTYPE=NAPTR to NUT.
        2. NUT reply query response w/ NAPTR resource records to TN (Judgment *2)

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	2000
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	1.0.0.0.1.1.1.1.0.9.1.8.e164.arpa.
	QTYPE	NAPTR (0x0023)
	QCLASS	IN (0x0001)

2nd packet.

Standard query response from DNS Server1 (NUT) to Client (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	0x1000
	QR	1
	OPCODE	0
	AA	1
	TC	0
	RD	0
	RA	0
	Z	ANY
	RCODE	0
	QDCOUNT	1
	ANCOUNT	4
	NSCOUNT	1
	ARCOUNT	1
DNS Question section	QNAME	1.0.0.0.1.1.1.1.0.9.1.8.e164.arpa
	QTYPE	NAPTR (0x0023)
	QCLASS	IN (0x0001)
DNS Answer section	NAME	1.0.0.0.1.1.1.1.0.9.1.8.e164.arpa (Pointer 0xC00C)
	TYPE	NAPTR (0x0023)
	CLASS	IN (0x0001)
	TTL	86400sec
	RDLENGTH	45
	ORDER	100
	PREFERENCE	10
	FLAGS	U
	SERVICES	sip+E2U
	REGEXP	!^.*$!sip:info1@example.com!i
	REPLACEMENT	.
DNS Answer section	NAME	1.0.0.0.1.1.1.1.0.9.1.8.e164.arpa (Pointer 0xC00C)
	TYPE	NAPTR (0x0023)
	CLASS	IN (0x0001)
	TTL	86400sec
	RDLENGTH	45
	ORDER	100
	PREFERENCE	11
	FLAGS	U
	SERVICES	sip+E2U
	REGEXP	!^.*$!sip:info2@example.com!i
	REPLACEMENT	.
DNS Answer section	NAME	1.0.0.0.1.1.1.1.0.9.1.8.e164.arpa (Pointer 0xC00C)
	TYPE	NAPTR (0x0023)
	CLASS	IN (0x0001)
	TTL	86400sec
	RDLENGTH	45
	ORDER	101
	PREFERENCE	10
	FLAGS	U
	SERVICES	sip+E2U
	REGEXP	!^.*$!sip:info3@example.com!i
	REPLACEMENT	.
DNS Answer section	NAME	1.0.0.0.1.1.1.1.0.9.1.8.e164.arpa (Pointer 0xC00C)
	TYPE	NAPTR (0x0023)
	CLASS	IN (0x0001)
	TTL	86400sec
	RDLENGTH	45
	ORDER	101
	PREFERENCE	10
	FLAGS	U
	SERVICES	sip+E2U
	REGEXP	!^.*$!sip:info4@example.com!i
	REPLACEMENT	.
DNS Authority section	NAME	1.1.1.1.0.9.1.8.e164.arpa. (Pointer 0xC014)
	TYPE	NS (0x0002)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	17
	NSDNAME	NS1.example.com
DNS Additional section	NAME	NS1.example.com (Pointer 0xC123)
	TYPE	A (0x0001)
	CLASS	IN (0x0001)
	TTL	1 day (86400)
	RDLENGTH	4
	ADDRESS	192.168.0.10

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 including NAPTR resource records.

TERMINATION

        None

REFERENCE

        RFC3403 Dynamic Delegation Discovery System (DDDS)
                Part Three: The Domain Name System (DNS) Database
        4. NAPTR RR Format 
        4.1 Packet Format