NSEC3 ISSUE
Mark Andrews
marka at isc.org
Fri Jan 7 13:51:02 UTC 2011
Perhaps if dnssecnsec3qatestdomain.com existed we would be able to
tell you. As it is there is not enough information here to workout
what is broken.
In message <AANLkTik4qLWTYDStmWxm-hsE8yx88H6tfkPX4cXY8+nx at mail.gmail.com>, rams
writes:
>
> I have trouble resolving the host name dnssecnsec3qatestdomain.com. which is
> NSEC3 signed. This is the parent and child zone. If I run dig ( dnssec
> query) with the +cd option I which is a proper response:
>
>
>
> [root at stulcqanusbind1 ~]# dig dnssecnsec3qatestdomain.com. any +dnssec *+cd
> *
>
>
>
> ; <<>> DiG 9.7.1-P2 <<>> dnssecnsec3qatestdomain.com. any +dnssec +cd
>
> ; (1 server found)
>
> ;; global options: +cmd
>
> ;; Got answer:
>
> ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1601
>
> ;; flags: qr rd ra cd; QUERY: 1, ANSWER: 8, AUTHORITY: 3, ADDITIONAL: 1
>
>
>
> ;; OPT PSEUDOSECTION:
>
> ; EDNS: version: 0, flags: do; udp: 4096
>
> ;; QUESTION SECTION:
>
> ;dnssecnsec3qatestdomain.com. IN ANY
>
>
>
> ;; ANSWER SECTION:
>
> dnssecnsec3qatestdomain.com. 86396 IN RRSIG A 7 2 86400 20200831000000
> 20100831205954 61559 dnssecnsec3qatestdomain.com.
> A4HqcGYSyEoM7Y75MoRaK4zzNiuL45tq+AnfUIrxxEIPkIOI12FmFyhY
> JOQN216QkTbYkJBlNwe2Ky1SRGjwhQ==
>
> dnssecnsec3qatestdomain.com. 86396 IN A 12.12.1.0
>
> dnssecnsec3qatestdomain.com. 86396 IN A 255.12.1.0
>
> dnssecnsec3qatestdomain.com. 86396 IN RRSIG SOA 7 2 86400 20200831000000
> 20100831205954 61559 dnssecnsec3qatestdomain.com.
> eAV/LHcB3WLA9ULvsz/kcVJ63XeJCX/YAOu9ZFUM+SVDIW/BAUXNfq9O
> iNBuukgDBlFZFOQyblfgjpcSW3CQMw==
>
> dnssecnsec3qatestdomain.com. 86396 IN SOA udns1.ultradns.net.
> bitbucket\@qa.neustar.com. 2009111903 10800 3600 2592000 86400
>
> dnssecnsec3qatestdomain.com. 86396 IN RRSIG NS 7 2 86400 20200831000000
> 20100831205954 61559 dnssecnsec3qatestdomain.com.
> r11osNc3HFoVFWjC1iNN9Yv3IKGvApbZwkNLdK5HTlPt+3UDB2Do7RvT
> 9SSJaZYLj4PEC8Gp6lT1L+0LlsEP9w==
>
> dnssecnsec3qatestdomain.com. 86396 IN NS udns2.ultradns.net.
>
> dnssecnsec3qatestdomain.com. 86396 IN NS udns1.ultradns.net.
>
>
>
> ;; AUTHORITY SECTION:
>
> dnssecnsec3qatestdomain.com. 86396 IN NS udns2.ultradns.net.
>
> dnssecnsec3qatestdomain.com. 86396 IN NS udns1.ultradns.net.
>
> dnssecnsec3qatestdomain.com. 86396 IN RRSIG NS 7 2 86400 20200831000000
> 20100831205954 61559 dnssecnsec3qatestdomain.com.
> r11osNc3HFoVFWjC1iNN9Yv3IKGvApbZwkNLdK5HTlPt+3UDB2Do7RvT
> 9SSJaZYLj4PEC8Gp6lT1L+0LlsEP9w==
>
>
>
>
>
> But dig (dnssec query)without +cd option returns servfail.
>
>
>
>
>
> [root at stulcqanusbind1 ~]# dig dnssecnsec3qatestdomain.com. any +dnssec
>
>
>
> ; <<>> DiG 9.7.1-P2 <<>> @ dnssecnsec3qatestdomain.com. any +dnssec
>
> ; (1 server found)
>
> ;; global options: +cmd
>
> ;; Got answer:
>
> ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 7437
>
> ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
>
>
>
> ;; OPT PSEUDOSECTION:
>
> ; EDNS: version: 0, flags: do; udp: 4096
>
> ;; QUESTION SECTION:
>
> ;dnssecnsec3qatestdomain.com. IN ANY
>
>
>
>
>
> In my logs I am getting messages:
>
>
>
> Jan 7 13:17:55 named[17154]: error (no valid RRSIG) resolving '
> dnssecnsec3qatestdomain.com/DNSKEY/IN': 10.31.142.103#53
>
> Jan 7 13:17:55 named[17154]: error (broken trust chain) resolving '
> dnssecnsec3qatestdomain.com/ANY/IN': 10.31.142.103#53
>
>
>
> When doing query without +cd option.
>
>
>
> Can you figure out what would be the exact problem?
>
>
> Thanks & Regards,
>
> Ramesh
>
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: marka at isc.org
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