[Dnsmasq-discuss] digging SOA records doesn't work

[Vaidotas Kaminskas]

Hi,

I'm using version 2.35-1 from debian etch. I cannot dig for SOA records
while behind dnsmasq:


# dig soa google.com

; <<>> DiG 9.4.2 <<>> soa google.com
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 45820
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;google.com.			IN	SOA

;; Query time: 10 msec
;; SERVER: 192.168.0.254#53(192.168.0.254)
;; WHEN: Thu Mar 20 21:14:45 2008
;; MSG SIZE  rcvd: 28

# 



While doing this I'm running tcpdump on the dnsmasqing router like this:

tcpdump -n -i eth0 udp and port 53

and it shows no activity. The command below, however, does produce the
packets requesting google.com's SOA in the tcpdump output.



# dig @88.223.0.1 soa google.com

; <<>> DiG 9.4.2 <<>> @88.223.0.1 soa google.com
; (1 server found)
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39935
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 4

;; QUESTION SECTION:
;google.com.			IN	SOA

;; ANSWER SECTION:
google.com.		54201	IN	SOA	ns1.google.com. dns-admin.google.com.
2008031700 7200 1800 1209600 300

;; AUTHORITY SECTION:
google.com.		68055	IN	NS	ns1.google.com.
google.com.		68055	IN	NS	ns2.google.com.
google.com.		68055	IN	NS	ns3.google.com.
google.com.		68055	IN	NS	ns4.google.com.

;; ADDITIONAL SECTION:
ns1.google.com.		49703	IN	A	216.239.32.10
ns2.google.com.		49703	IN	A	216.239.34.10
ns3.google.com.		49703	IN	A	216.239.36.10
ns4.google.com.		49703	IN	A	216.239.38.10

;; Query time: 10 msec
;; SERVER: 88.223.0.1#53(88.223.0.1)
;; WHEN: Thu Mar 20 21:22:32 2008
;; MSG SIZE  rcvd: 210

#




88.223.0.1 is the DNS server that the router running dnsmasq uses. So it
seems that dnsmasq isn't even trying to query for SOA records.



Regards,
Vaidotas