Re: [CNS-NS #16701] DNS b0rk3n?

From: by way of Micronet mailing list administrator <rossd_at_quantum.me.berkeley.edu>
Date: Tue Jan 25 2005 - 10:31:02 PST

> The nslookup results you see are probably due to the fact that the
> servers are responding after nslookup has timed out, and that's
> confusing nslookup as it cycles through all of the server addresses in
> your resolv.conf.
>
> michael

what was _really_ weird was this...

rossd@rossd ~ $ dig @21.248.0.3 www.namesys.com
;; reply from unexpected source: 128.32.206.9#53, expected 21.248.0.3#53
;; Warning: ID mismatch: expected ID 4007, got 52093

but never having poisoned a DNS cache, i don't really know if
there is a particular signature identifier.
All started when I was looking through the logs today on a sick
Windoze box: machine was reporting some .dll errors, when i saw
the following:

Event Type: Warning
Event Source: DNS
Event Category: None
Event ID: 5504
Date: 12/28/2004
Time: 4:13:45 PM
User: N/A
Computer: AXLE
Description:
The DNS server encountered an invalid domain name in a packet from 128.32.136.9. The packet is rejected.

don't know if its related... Windows Event viewer information is about
as clear as new england clam chowder. :-(

I attached the outputs of dnstrace from a machine here,
and my machine on my home DSL. I figured there were minds more
knowledgeable about such things...
Anyway, I'm just glad to know the sick Windoze box was not
anything I did. :-)

--
Tracing to www.namesys.com[a] via 206.13.31.12, maximum of 3 retries
206.13.31.12 (206.13.31.12) IP HEADER
- Destination address:  206.13.31.12
DNS HEADER (send)
- Identifier:           0x7D65
- Flags:                0x00 (Q )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  0
- Number additional RR: 0
QUESTIONS (send)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
DNS HEADER (recv)
- Identifier:           0x7D65
- Flags:                0x8080 (R RA )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     1
- Number authority RR:  2
- Number additional RR: 3
QUESTIONS (recv)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
ANSWER RR
- Domainname:           (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  44296 (12h18m16s)
- Resource length:      4
- Resource data:        212.16.7.65
AUTHORITY RR
- Domainname:           (7)namesys(3)com
- Type:                 2 (NS)
- Class:                1 (Internet)
- TTL:                  44296 (12h18m16s)
- Resource length:      5
- Resource data:        (2)ns(7)namesys(3)com
AUTHORITY RR
- Domainname:           (7)namesys(3)com
- Type:                 2 (NS)
- Class:                1 (Internet)
- TTL:                  44296 (12h18m16s)
- Resource length:      16
- Resource data:        (3)ns0(7)comstar(2)ru
ADDITIONAL RR
- Domainname:           (3)ns0(7)comstar(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  36337 (10h5m37s)
- Resource length:      4
- Resource data:        195.210.128.3
ADDITIONAL RR
- Domainname:           (3)ns0(7)comstar(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  36337 (10h5m37s)
- Resource length:      4
- Resource data:        212.248.0.3
ADDITIONAL RR
- Domainname:           (2)ns(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  44296 (12h18m16s)
- Resource length:      4
- Resource data:        212.16.7.65
Got answer 
 |\___ ns.namesys.com [namesys.com] (212.16.7.65) IP HEADER
- Destination address:  212.16.7.65
DNS HEADER (send)
- Identifier:           0x640F
- Flags:                0x00 (Q )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  0
- Number additional RR: 0
QUESTIONS (send)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
* IP HEADER
- Destination address:  212.16.7.65
DNS HEADER (send)
- Identifier:           0x640F
- Flags:                0x00 (Q )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  0
- Number additional RR: 0
QUESTIONS (send)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
* IP HEADER
- Destination address:  212.16.7.65
DNS HEADER (send)
- Identifier:           0x640F
- Flags:                0x00 (Q )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  0
- Number additional RR: 0
QUESTIONS (send)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
* 
 |\___ ns0.comstar.ru [namesys.com] (195.210.128.3) IP HEADER
- Destination address:  195.210.128.3
DNS HEADER (send)
- Identifier:           0x6601
- Flags:                0x00 (Q )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  0
- Number additional RR: 0
QUESTIONS (send)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
DNS HEADER (recv)
- Identifier:           0x6601
- Flags:                0x8080 (R RA )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  2
- Number additional RR: 3
QUESTIONS (recv)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
AUTHORITY RR
- Domainname:           (7)namesys(3)com
- Type:                 2 (NS)
- Class:                1 (Internet)
- TTL:                  147359 (1d16h55m59s)
- Resource length:      19
- Resource data:        (8)t-raenon(3)nmd(3)msu(2)ru
AUTHORITY RR
- Domainname:           (7)namesys(3)com
- Type:                 2 (NS)
- Class:                1 (Internet)
- TTL:                  147359 (1d16h55m59s)
- Resource length:      16
- Resource data:        (3)ns0(7)comstar(2)ru
ADDITIONAL RR
- Domainname:           (8)t-raenon(3)nmd(3)msu(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  46214 (12h50m14s)
- Resource length:      4
- Resource data:        193.232.112.65
ADDITIONAL RR
- Domainname:           (3)ns0(7)comstar(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  41353 (11h29m13s)
- Resource length:      4
- Resource data:        195.210.128.3
ADDITIONAL RR
- Domainname:           (3)ns0(7)comstar(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  41353 (11h29m13s)
- Resource length:      4
- Resource data:        212.248.0.3
Lame server 
  \___ ns0.comstar.ru [namesys.com] (212.248.0.3) IP HEADER
- Destination address:  212.248.0.3
DNS HEADER (send)
- Identifier:           0x1665
- Flags:                0x00 (Q )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  0
- Number additional RR: 0
QUESTIONS (send)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
DNS HEADER (recv)
- Identifier:           0x1665
- Flags:                0x8080 (R RA )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  2
- Number additional RR: 3
QUESTIONS (recv)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
AUTHORITY RR
- Domainname:           (7)namesys(3)com
- Type:                 2 (NS)
- Class:                1 (Internet)
- TTL:                  147359 (1d16h55m59s)
- Resource length:      19
- Resource data:        (8)t-raenon(3)nmd(3)msu(2)ru
AUTHORITY RR
- Domainname:           (7)namesys(3)com
- Type:                 2 (NS)
- Class:                1 (Internet)
- TTL:                  147359 (1d16h55m59s)
- Resource length:      16
- Resource data:        (3)ns0(7)comstar(2)ru
ADDITIONAL RR
- Domainname:           (8)t-raenon(3)nmd(3)msu(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  46214 (12h50m14s)
- Resource length:      4
- Resource data:        193.232.112.65
ADDITIONAL RR
- Domainname:           (3)ns0(7)comstar(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  41353 (11h29m13s)
- Resource length:      4
- Resource data:        195.210.128.3
ADDITIONAL RR
- Domainname:           (3)ns0(7)comstar(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  41353 (11h29m13s)
- Resource length:      4
- Resource data:        212.248.0.3
Lame server 
--
Tracing to www.namesys.com[a] via 128.32.136.9, maximum of 3 retries
128.32.136.9 (128.32.136.9) IP HEADER
- Destination address:  128.32.136.9
DNS HEADER (send)
- Identifier:           0x6048
- Flags:                0x00 (Q )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  0
- Number additional RR: 0
QUESTIONS (send)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
DNS HEADER (recv)
- Identifier:           0x6048
- Flags:                0x8080 (R RA )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  2
- Number additional RR: 3
QUESTIONS (recv)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
AUTHORITY RR
- Domainname:           (7)namesys(3)com
- Type:                 2 (NS)
- Class:                1 (Internet)
- TTL:                  166878 (1d22h21m18s)
- Resource length:      14
- Resource data:        (3)ns0(7)comstar(2)ru
AUTHORITY RR
- Domainname:           (7)namesys(3)com
- Type:                 2 (NS)
- Class:                1 (Internet)
- TTL:                  166878 (1d22h21m18s)
- Resource length:      21
- Resource data:        (8)t-raenon(3)nmd(3)msu(2)ru
ADDITIONAL RR
- Domainname:           (8)t-raenon(3)nmd(3)msu(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  42369 (11h46m9s)
- Resource length:      4
- Resource data:        193.232.112.65
ADDITIONAL RR
- Domainname:           (3)ns0(7)comstar(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  72375 (20h6m15s)
- Resource length:      4
- Resource data:        212.248.0.3
ADDITIONAL RR
- Domainname:           (3)ns0(7)comstar(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  72375 (20h6m15s)
- Resource length:      4
- Resource data:        195.210.128.3
 |\___ ns0.comstar.ru [namesys.com] (212.248.0.3) IP HEADER
- Destination address:  212.248.0.3
DNS HEADER (send)
- Identifier:           0x1410
- Flags:                0x00 (Q )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  0
- Number additional RR: 0
QUESTIONS (send)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
DNS HEADER (recv)
- Identifier:           0x1410
- Flags:                0x8080 (R RA )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  2
- Number additional RR: 3
QUESTIONS (recv)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
AUTHORITY RR
- Domainname:           (7)namesys(3)com
- Type:                 2 (NS)
- Class:                1 (Internet)
- TTL:                  147380 (1d16h56m20s)
- Resource length:      19
- Resource data:        (8)t-raenon(3)nmd(3)msu(2)ru
AUTHORITY RR
- Domainname:           (7)namesys(3)com
- Type:                 2 (NS)
- Class:                1 (Internet)
- TTL:                  147380 (1d16h56m20s)
- Resource length:      16
- Resource data:        (3)ns0(7)comstar(2)ru
ADDITIONAL RR
- Domainname:           (8)t-raenon(3)nmd(3)msu(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  46235 (12h50m35s)
- Resource length:      4
- Resource data:        193.232.112.65
ADDITIONAL RR
- Domainname:           (3)ns0(7)comstar(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  41374 (11h29m34s)
- Resource length:      4
- Resource data:        195.210.128.3
ADDITIONAL RR
- Domainname:           (3)ns0(7)comstar(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  41374 (11h29m34s)
- Resource length:      4
- Resource data:        212.248.0.3
Lame server 
 |\___ ns0.comstar.ru [namesys.com] (195.210.128.3) IP HEADER
- Destination address:  195.210.128.3
DNS HEADER (send)
- Identifier:           0x5179
- Flags:                0x00 (Q )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  0
- Number additional RR: 0
QUESTIONS (send)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
DNS HEADER (recv)
- Identifier:           0x5179
- Flags:                0x8080 (R RA )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  2
- Number additional RR: 3
QUESTIONS (recv)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
AUTHORITY RR
- Domainname:           (7)namesys(3)com
- Type:                 2 (NS)
- Class:                1 (Internet)
- TTL:                  147379 (1d16h56m19s)
- Resource length:      19
- Resource data:        (8)t-raenon(3)nmd(3)msu(2)ru
AUTHORITY RR
- Domainname:           (7)namesys(3)com
- Type:                 2 (NS)
- Class:                1 (Internet)
- TTL:                  147379 (1d16h56m19s)
- Resource length:      16
- Resource data:        (3)ns0(7)comstar(2)ru
ADDITIONAL RR
- Domainname:           (8)t-raenon(3)nmd(3)msu(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  46234 (12h50m34s)
- Resource length:      4
- Resource data:        193.232.112.65
ADDITIONAL RR
- Domainname:           (3)ns0(7)comstar(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  41373 (11h29m33s)
- Resource length:      4
- Resource data:        195.210.128.3
ADDITIONAL RR
- Domainname:           (3)ns0(7)comstar(2)ru
- Type:                 1 (A)
- Class:                1 (Internet)
- TTL:                  41373 (11h29m33s)
- Resource length:      4
- Resource data:        212.248.0.3
Lame server 
  \___ t-raenon.nmd.msu.ru [namesys.com] (193.232.112.65) IP HEADER
- Destination address:  193.232.112.65
DNS HEADER (send)
- Identifier:           0x222F
- Flags:                0x00 (Q )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  0
- Number additional RR: 0
QUESTIONS (send)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
* IP HEADER
- Destination address:  193.232.112.65
DNS HEADER (send)
- Identifier:           0x222F
- Flags:                0x00 (Q )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  0
- Number additional RR: 0
QUESTIONS (send)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
* IP HEADER
- Destination address:  193.232.112.65
DNS HEADER (send)
- Identifier:           0x222F
- Flags:                0x00 (Q )
- Opcode:               0 (Standard query)
- Return code:          0 (No error)
- Number questions:     1
- Number answer RR:     0
- Number authority RR:  0
- Number additional RR: 0
QUESTIONS (send)
- Queryname:            (3)www(7)namesys(3)com
- Type:                 1 (A)
- Class:                1 (Internet)
* 
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Received on Tue Jan 25 10:33:13 2005

This archive was generated by hypermail 2.1.8 : Tue Jan 25 2005 - 10:33:26 PST