servfail when refresh aws.amazon.com
Eric Yiu
eric.yiu at gmail.com
Wed Jun 22 11:26:06 UTC 2011
Hi,
I am using bind9.7.3-P1 with solaris10x86. I notice that
sometimes our bind server will reply servfail when querying
a zone aws.amazon.com which is expiring, while this
aws.amazon.com only 60sec cache lifetime, eg.
> /usr/local/bin/dig a aws.amazon.com
; <<>> DiG 9.7.3-P1 <<>> a aws.amazon.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 26307
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 6, ADDITIONAL: 1
;; QUESTION SECTION:
;aws.amazon.com. IN A
;; ANSWER SECTION:
aws.amazon.com. 1 IN A 72.21.210.163
;; AUTHORITY SECTION:
aws.amazon.com. 6517 IN NS ns-932.amazon.com.
aws.amazon.com. 6517 IN NS ns-931.amazon.com.
aws.amazon.com. 6517 IN NS ns-912.amazon.com.
aws.amazon.com. 6517 IN NS ns-923.amazon.com.
aws.amazon.com. 6517 IN NS ns-911.amazon.com.
aws.amazon.com. 6517 IN NS ns-921.amazon.com.
;; ADDITIONAL SECTION:
ns-911.amazon.com. 3108 IN A 207.171.178.13
;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Jun 22 18:59:30 2011
;; MSG SIZE rcvd: 190
> /usr/local/bin/dig a aws.amazon.com
; <<>> DiG 9.7.3-P1 <<>> a aws.amazon.com
;; global options: +cmd
;; Got answer:
*;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 20884
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0*
;; QUESTION SECTION:
;aws.amazon.com. IN A
;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Jun 22 18:59:31 2011
;; MSG SIZE rcvd: 32
> /usr/local/bin/dig a aws.amazon.com
^[[A
; <<>> DiG 9.7.3-P1 <<>> a aws.amazon.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 47970
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 6, ADDITIONAL: 1
;; QUESTION SECTION:
;aws.amazon.com. IN A
;; ANSWER SECTION:
aws.amazon.com. 60 IN A 72.21.210.163
;; AUTHORITY SECTION:
aws.amazon.com. 6516 IN NS ns-932.amazon.com.
aws.amazon.com. 6516 IN NS ns-911.amazon.com.
aws.amazon.com. 6516 IN NS ns-912.amazon.com.
aws.amazon.com. 6516 IN NS ns-931.amazon.com.
aws.amazon.com. 6516 IN NS ns-921.amazon.com.
aws.amazon.com. 6516 IN NS ns-923.amazon.com.
;; ADDITIONAL SECTION:
ns-911.amazon.com. 3107 IN A 207.171.178.13
;; Query time: 229 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Jun 22 18:59:31 2011
;; MSG SIZE rcvd: 190
Is it normal? What would be the problem?
Eric
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