SV_RFC1995_2_IXFR_client - an IXFR client sends an IXFR message
Verify that a NUT sends an IXFR message to get a new information about zone.
Server (an IXFR client)
SV_RFC1995_2_IXFR_client.seq [-tooloption ...]: KOI tool option See also DNSConfig.pm
| | sec.example.com domain Router (TN) DNS Server7 |3ffe:501:ffff:100::1 |3ffe:501:ffff:100::31 |192.168.0.1 |192.168.0.31 | | | | Net-z --+--------+---------------+-------+------------------- 3ffe:501:ffff:100::/64 | | 192.168.0/24 | | DNS Server1 (NUT) DNS Client1 (TN) 3ffe:501:ffff:100::10 3ffe:501:ffff:100::20 192.168.0.10 192.168.0.20
$TTL 86400 ; TTL of 1 day @ IN SOA NS7.sec.example.com. root.sec.example.com. ( 1 ; serial 180 ; refresh every 3 min 30 ; retry every 30 sec 360 ; expire after 6 min 30 ; Minimum TTL of 30 sec ) ; IN NS NS7.sec.example.com. IN NS NS1.sec.example.com. IN MX 10 NS7 NS7 IN A 192.168.0.31 IN AAAA 3ffe:501:ffff:100::31 NS1 IN A 192.168.0.10 IN AAAA 3ffe:501:ffff:100::10 ; CL1 IN A 192.168.0.20 CL2 IN A 192.168.0.21
After all zone information are transferred between primary DNS server7 (TN) and slave DNS server1 (NUT), following pre-test sequence is performed.
DNS Client1 (TN) DNS Server1 (NUT) DNS Server7 (TN) | | | |----------------------------->| | | 1. Send standard query | | | RD = 0 | | | QNAME = CL2.sec.example.com | | | QTYPE = A | | | | | |<-----------------------------| | | 2. Standard query response | | | AA = 0 | | | RD = 0 | | | QNAME = CL2.sec.example.com | | | QTYPE = A | | | ANSWER Name | | | = CL2.sec.example.com | | | ANSWER Type | | | = A (0x0001) | | | ANSWER Address | | | = 192.168.0.21 | | | | | v v v
This test sequence is following. NOTE: SOA's parameter and TTL are same as above sec.example.com zone information. TN includes NS7 and NS1.sub.example.com into Authority as type = NS. Also TN includes NS7 and NS1.sub.example.com address into Additional section. Thus NUT may reply to answer client with Authority and Additional section including those values.
DNS Client1 (TN) DNS Server1 (NUT) DNS Server7 (TN) | | | | | | | | Before SOA REFRESH (180sec) | | | timeout expired | | | | | |----------------------------->| | | 1. Standard query | | | QNAME = sec.example.com | | | QTYPE = SOA (0x0006) | | | | | |<-----------------------------| | | 2. Standard query response | | | QNAME = sec.example.com | | | QTYPE = SOA (0x0006) | | | ANSWER Name | | | = sec.example.com | | | ANSWER Type | | | = SOA (0x0006) | | | ANSWER SERIAL | | | = 2 | | | | | |----------------------------->| | | 3. Standard query | | | using UDP or TCP | | | QNAME = sec.example.com | | | QTYPE = IXFR (0x00FB) | | | AUTHORITY Name | | | = sec.example.com | | | AUTHORITY Type | | | = SOA (0x0006) | | | AUTHORITY SERIAL | | | = 1 | | | | v v v
This test sequence is following.
1. After SOA refresh time expired, DNS Server1 (NUT) transmits standard query QNAME = sec.example.com, Type = SOA to DNS Server7 (TN). (Judgment *1) 2. DNS Server7 (TN) sends standard query response with SOA serial = 2 to DNS Server1 (NUT).
3. DNS Server1 (NUT) transmits standard query with QNAME = sec.example.com, Type = IXFR, including Authority Name = sec.example.com, Type = SOA serial = 1 using UDP or TCP to DNS Server7 (TN). (Judgment *3)
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IP Header | Source Address | NUT_NETZ |
Destination Address | SV7_NETZ | |
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 | 0 | |
RCODE | 0 | |
QDCOUNT | 1 | |
ANCOUNT | 0 | |
NSCOUNT | 0 | |
ARCOUNT | 0 | |
DNS Question section | QNAME | sec.example.com |
QTYPE | SOA (0x0006) | |
QCLASS | IN (0x0001) |
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IP Header | Source Address | SV7_NETZ |
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 | 0 | |
Z | 0 | |
RCODE | 0 | |
QDCOUNT | 1 | |
ANCOUNT | 1 | |
NSCOUNT | 2 | |
ARCOUNT | 4 | |
DNS Question section | QNAME | sec.example.com |
QTYPE | SOA (0x0006) | |
QCLASS | IN (0x0001) | |
DNS Answer section | NAME | sec.example.com (Pointer 0xC00C) |
TYPE | SOA (0x0006) | |
CLASS | IN (0x0001) | |
TTL | 86400sec | |
RDLENGTH | 33 | |
MNAME | NS7.sec.example.com (NS7 + Pointer 0xC00C) | |
RNAME | root.sec.example.com (root + Pointer 0xC00C) | |
SERIAL | 2 | |
REFRESH | 180sec | |
RETRY | 30sec | |
EXPIRE | 360sec | |
MINIMUM | 30sec | |
DNS Authority section | NAME | sec.example.com (Pointer 0xC00C) |
TYPE | NS (0x0002) | |
CLASS | IN (0x0001) | |
TTL | 86400sec | |
RDLENGTH | 2 | |
NSDNAME | NS1.sec.example.com (NS1 + Pointer 0xC00C) | |
DNS Authority section | NAME | sec.example.com (Pointer 0xC00C) |
TYPE | NS (0x0002) | |
CLASS | IN (0x0001) | |
TTL | 86400sec | |
RDLENGTH | 2 | |
NSDNAME | NS7.sec.example.com (Pointer 0xC02D) | |
DNS Additional section | NAME | NS1.sec.example.com (Pointer 0xC05A) |
TYPE |
A (0x0001) | |
CLASS | IN (0x0001) | |
TTL | 86400sec | |
RDLENGTH | 4 | |
ADDRESS | 192.168.0.10 | |
DNS Additional section | NAME | NS1.sec.example.com (Pointer 0xC05A) |
TYPE |
AAAA (0x001C) | |
CLASS | IN (0x0001) | |
TTL | 86400sec | |
RDLENGTH | 16 | |
ADDRESS | 3ffe:501:ffff:100::10 | |
DNS Additional section | NAME | NS7.sec.example.com (Pointer 0xC02D) |
TYPE |
A (0x0001) | |
CLASS | IN (0x0001) | |
TTL | 86400sec | |
RDLENGTH | 4 | |
ADDRESS | 192.168.0.31 | |
DNS Additional section | NAME | NS7.sec.example.com (Pointer 0xC02D) |
TYPE |
AAAA (0x001C) | |
CLASS | IN (0x0001) | |
TTL | 86400sec | |
RDLENGTH | 16 | |
ADDRESS | 3ffe:501:ffff:100::31 |
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IP Header | Source Address | NUT_NETZ |
Destination Address | SV7_NETZ | |
TCP Header | Src Port | ANY |
Dst Port | 53 | |
DNS Header | ID | ANY |
QR | 0 | |
OPCODE | 0 | |
AA | 0 | |
TC | 0 | |
RD | 0 | |
RA | 0 | |
Z | 0 | |
RCODE | 0 | |
QDCOUNT | 1 | |
ANCOUNT | 0 | |
NSCOUNT | >=1 | |
ARCOUNT | 0 | |
DNS Question section | QNAME | sec.example.com |
QTYPE | IXFR (0x00FB) | |
QCLASS | IN (0x0001) | |
DNS Authority section | NAME | sec.example.com (Pointer 0xC00C) |
TYPE | SOA (0x0006) | |
CLASS | IN (0x0001) | |
TTL | 86400sec | |
RDLENGTH | 33 | |
MNAME | NS7.sec.example.com (NS7 + Pointer 0xC00C) | |
RNAME | root.sec.example.com (root + Pointer 0xC00C) | |
SERIAL | 1 | |
REFRESH | 180sec | |
RETRY | 30sec | |
EXPIRE | 360sec | |
MINIMUM | 30sec |
NUT_NETZ | DNS Server1's (NUT) Net-z address |
CL1_NETZ | DNS Client1's (TN) Net-z address |
SV7_NETZ | DNS Server7's (TN) Net-z address |
1. Received standard query with Type=SOA after SOA refresh time expired. 3. Received standard query with Type=IXFR serial=1 using TCP.
None
RFC1995 Incremental Zone Transfer in DNS 2. Brief Description of the Protocol 3. Query Format