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El 22 Apr 2002 a las 21:17, Thilo Bangert escribió:
On Monday, 22. April 2002 21:03, you wrote:
Hi,
Hi
I just installed GnuDIP 2.3.5 and was toying around and
adjusting things when it suddenly stopped working. I
couldn't update via web or via tcp... I checked and
noticed that in fact, I wasn't able to make a
successful nsupdate even via command line.
I added -d to nsupdate and saw that the error message
said something about not getting a SOA record.
A host -t soa host.dyndomain.mydomain.com didn't get
a SOA record but, as far as I remembered, never did.
The SOA belongs to dyndomain.mydomain.com not to
host.dyndomain.mydomain.com.
After a while I remembered I had changed the order of
the nameserver entries in /etc/resolv.conf in the
GnuDIP host.
Originally there was a BIND resolver (not the BIND
authoritative server) and I had put it below a DJB's
dnscache.
After digging enough I noticed the following.
With the BIND resolver I got the following:
# dnsqr any host.dyndomain.mydomain.com
255 host.dyndomain.mydomain.com:
97 bytes, 1+0+1+0 records, response, authoritative, nxdomain
query: 255 host.dyndomain.mydomain.com
authority: dyndomain.mydomain.com 10 SOA ns1.dyndomain.mydomain.com
hostmaster.dyndomain.mydomain.com 2002042214 10800 3600 360 10
And with DJB's dnscache:
# dnsqr any host.dyndomain.mydomain.com
255 host.dyndomain.mydomain.com:
41 bytes, 1+0+0+0 records, response, authoritative, nxdomain
query: 255 host.dyndomain.mydomain.com
Note that BIND includes an authority section for
whoever has authority to that domain, whereas dnscache
does not.
The point is, if you are using nsupdate, you CAN'T
resolve via dnscache.
why do you conclude that? i can't seem to follow you...
192.168.1.2 is running dnscache
192.168.1.99 is running bind 8.2.3 (cache only)
/etc/resolv.conf has
nameserver 192.168.1.2
nameserver 192.168.1.99
# nsupdate -d -v
update delete baby.dyn.pertisp.com.ar. in a
Reply from SOA query:
;; -HEADER- opcode: QUERY, status: NOERROR, id: 49055
;; flags: qr rd ra ; QUESTION: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;baby.dyn.pertisp.com.ar. IN SOA
response to SOA query didn't contain an SOA
#
nsupdate doesn't work and complains that a response to SOA query didn't contain an SOA.
Here's dnscache log:
2002-04-22 16:54:53.404173500 query 28856 192.168.1.7:32834:49055 soa
baby.dyn.pertisp.com.ar.
2002-04-22 16:54:53.404179500 cached ns pertisp.com.ar. ns1.pertisp.com.ar.
2002-04-22 16:54:53.404182500 cached ns pertisp.com.ar. ns2.pertisp.com.ar.
2002-04-22 16:54:53.404184500 cached a ns1.pertisp.com.ar.
2002-04-22 16:54:53.404186500 cached a ns2.pertisp.com.ar.
2002-04-22 16:54:53.404188500 tx 0 soa baby.dyn.pertisp.com.ar. pertisp.com.ar.
200.49.76.6
200.49.76.6 200.49.76.34
2002-04-22 16:54:53.406347500 nodata 200.49.76.6 10 6 baby.dyn.pertisp.com.ar.
If you look at what the query for ANY answers, you get:
# dnsqr any baby.dyn.pertisp.com.ar
255 baby.dyn.pertisp.com.ar:
57 bytes, 1+1+0+0 records, response, noerror
query: 255 baby.dyn.pertisp.com.ar
answer: baby.dyn.pertisp.com.ar 5 A 1.2.3.4
Now I flip the order in /etc/resolv.conf:
nameserver 192.168.1.99
nameserver 192.168.1.2
# nsupdate -d -v
update delete baby.dyn.pertisp.com.ar. in a
Reply from SOA query:
;; -HEADER- opcode: QUERY, status: NOERROR, id: 24278
;; flags: qr aa rd ra ; QUESTION: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;baby.dyn.pertisp.com.ar. IN SOA
;; AUTHORITY SECTION:
dyn.pertisp.com.ar. 10 IN SOA ns1.pertisp.com.ar.
hostmaster.pert.com.ar. 2002042215 10800 3600 360 10
Found zone name: dyn.pertisp.com.ar
The master is: ns1.pertisp.com.ar
Reply from update query:
;; -HEADER- opcode: UPDATE, status: NOERROR, id: 10966
;; flags: qr ra ; ZONE: 0, PREREQ: 0, UPDATE: 0, ADDITIONAL: 0
update add baby.dyn.pertisp.com.ar. 5 in a 1.2.3.4
Reply from SOA query:
;; -HEADER- opcode: QUERY, status: NXDOMAIN, id: 55227
;; flags: qr aa rd ra ; QUESTION: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;baby.dyn.pertisp.com.ar. IN SOA
;; AUTHORITY SECTION:
dyn.pertisp.com.ar. 10 IN SOA ns1.pertisp.com.ar.
hostmaster.pert.com.ar. 2002042216 10800 3600 360 10
Found zone name: dyn.pertisp.com.ar
The master is: ns1.pertisp.com.ar
Reply from update query:
;; -HEADER- opcode: UPDATE, status: NOERROR, id: 49272
;; flags: qr ra ; ZONE: 0, PREREQ: 0, UPDATE: 0, ADDITIONAL: 0
Destroy DST lib
Detach from entropy
#
BIND is only logging the query:
22-Apr-2002 17:01:59.615 queries: info: XX+/192.168.1.7/baby.dyn.pertisp.com.ar/ANY/IN
However, if now I check via dnsqr:
# dnsqr any
