Hi, we have found the bug that caused this problem. It was introduced in a very recent release. The fix is on its way. Thanks very much for the report, Yunhong On Thu, Nov 15, 2012 at 12:26 PM, Jay Ford <jay-ford@uiowa.edu> wrote:
It looks like if the server has the RRSIG RR, it returns it. For example, a query with +dnssec will cause it to cache the RRSIG, after which it returns it even if +dnssec not specified.
________________________________________________________________________ Jay Ford, Network Engineering Group, Information Technology Services University of Iowa, Iowa City, IA 52242 email: jay-ford@uiowa.edu, phone: 319-335-5555, fax: 319-335-2951
________________________________________ query without +dnssec before RRSIG is cached; RRSIG not returned ________________________________________
: dig @8.8.8.8 m1.mailplus.nl
; <<>> DiG 9.8.1-P1 <<>> @8.8.8.8 m1.mailplus.nl
; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 3665
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION: ;m1.mailplus.nl. IN A
;; ANSWER SECTION: m1.mailplus.nl. 2985 IN A 46.31.50.16
;; Query time: 15 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Thu Nov 15 11:22:02 2012 ;; MSG SIZE rcvd: 48
________________________________________ query with +dnssec; RRSIG is returned ________________________________________
: dig +dnssec +multi @8.8.8.8 m1.mailplus.nl
; <<>> DiG 9.8.1-P1 <<>> +dnssec +multi @8.8.8.8 m1.mailplus.nl
; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 58877 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags: do; udp: 512
;; QUESTION SECTION: ;m1.mailplus.nl. IN A
;; ANSWER SECTION: m1.mailplus.nl. 2978 IN A 46.31.50.16 m1.mailplus.nl. 2978 IN RRSIG A 7 3 3600 20130517082302 (
20121115082302 3767 mailplus.nl.
WzKY2FnTbF8MOhAuDvnrPkpgskeH4aI1YByh6zBX1z1p
QRo8YIcxzlSNtHv2LnKUk+0n6iIXqV77sHynHHP/Y/a0
bMKYKIDuK8Gtz47AVDJaU0eX0FR8F5qqw897ClGf5ISa 0njPLFVyF/NJ6hNViDYzOhhHGi58dhZmhKWFujs= )
;; Query time: 16 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Thu Nov 15 11:22:10 2012 ;; MSG SIZE rcvd: 230
________________________________________ query without +dnssec after RRSIG is cached; RRSIG returned ________________________________________
: dig +multi @8.8.8.8 m1.mailplus.nl
; <<>> DiG 9.8.1-P1 <<>> +multi @8.8.8.8 m1.mailplus.nl
; (1 server found) ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13524
;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0
;; QUESTION SECTION: ;m1.mailplus.nl. IN A
;; ANSWER SECTION: m1.mailplus.nl. 2974 IN A 46.31.50.16 m1.mailplus.nl. 2974 IN RRSIG A 7 3 3600 20130517082302 (
20121115082302 3767 mailplus.nl.
WzKY2FnTbF8MOhAuDvnrPkpgskeH4aI1YByh6zBX1z1p
QRo8YIcxzlSNtHv2LnKUk+0n6iIXqV77sHynHHP/Y/a0
bMKYKIDuK8Gtz47AVDJaU0eX0FR8F5qqw897ClGf5ISa 0njPLFVyF/NJ6hNViDYzOhhHGi58dhZmhKWFujs= )
;; Query time: 17 msec ;; SERVER: 8.8.8.8#53(8.8.8.8) ;; WHEN: Thu Nov 15 11:22:13 2012 ;; MSG SIZE rcvd: 219