Hello BIND users,
I am running BIND 9.11.4 on CentOS 7, built with support for dnstap. I am
testing capturing of all DNS packets, including DNS update packets, but they
don't seem to be captured. Here are my named.conf options:
dnstap-output file "/tmp/dnstap.output" ;
dnstap { all ; };
I use nsupdate to send a DDNS update to my zone, which is added successfully.
However, the dnstap.output does not record the DNS update. I see only the
following three packets captured:
02-Aug-2018 16:24:37.365 AQ ::1:8145 -> ::1:0 UDP 38b
test1.dnstaptest.com/IN/SOA
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 18817
;; flags:; QUESTION: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION:
;test1.dnstaptest.com. IN SOA
02-Aug-2018 16:24:37.365 AR ::1:8145 <- ::1:0 UDP 104b
test1.dnstaptest.com/IN/SOA
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 18817
;; flags: qr aa ra; QUESTION: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0
;; QUESTION SECTION:
;test1.dnstaptest.com. IN SOA
;; AUTHORITY SECTION:
dnstaptest.com. 0 IN SOA centos7-dns-test1.
dnsadmin.dnstaptest.com. 6 10800 3600 604800 86400
02-Aug-2018 16:24:37.367 AR ::1:8145 <- ::1:0 UDP 32b dnstaptest.com/IN/SOA
;; ->>HEADER<<- opcode: UPDATE, status: NOERROR, id: 22809
;; flags: qr; ZONE: 1, PREREQ: 0, UPDATE: 0, ADDITIONAL: 0
;; ZONE SECTION:
;dnstaptest.com. IN SOA
What is going on here? Why is the DNS Update packet not captured/logged?
Thanks,
Greg Rabil
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