Maintained by: NLnet Labs

[Unbound-users] Parent Child Disagreement Redux

Dustin Marquess
Tue Jul 20 20:45:31 CEST 2010


I believe I'm still having problems related to the
parent-child-disagreement problem.

Running the latest unbound from svn (revision 2200).  I've tried using
fork mode and threaded+libevent, same outcome, getting SERVFAILs:

$ dig @127.0.0.1 www.us.hsbc.com. in any +trace

; <<>> DiG 9.6.2-P2 <<>> @127.0.0.1 www.us.hsbc.com. in any +trace
; (1 server found)
;; global options: +cmd
.                       518400  IN      NS      b.root-servers.net.
.                       518400  IN      NS      h.root-servers.net.
.                       518400  IN      NS      k.root-servers.net.
.                       518400  IN      NS      m.root-servers.net.
.                       518400  IN      NS      l.root-servers.net.
.                       518400  IN      NS      c.root-servers.net.
.                       518400  IN      NS      e.root-servers.net.
.                       518400  IN      NS      g.root-servers.net.
.                       518400  IN      NS      d.root-servers.net.
.                       518400  IN      NS      j.root-servers.net.
.                       518400  IN      NS      f.root-servers.net.
.                       518400  IN      NS      a.root-servers.net.
.                       518400  IN      NS      i.root-servers.net.
;; Received 500 bytes from 127.0.0.1#53(127.0.0.1) in 56 ms

com.                    172800  IN      NS      b.gtld-servers.net.
com.                    172800  IN      NS      m.gtld-servers.net.
com.                    172800  IN      NS      k.gtld-servers.net.
com.                    172800  IN      NS      i.gtld-servers.net.
com.                    172800  IN      NS      e.gtld-servers.net.
com.                    172800  IN      NS      j.gtld-servers.net.
com.                    172800  IN      NS      c.gtld-servers.net.
com.                    172800  IN      NS      h.gtld-servers.net.
com.                    172800  IN      NS      d.gtld-servers.net.
com.                    172800  IN      NS      a.gtld-servers.net.
com.                    172800  IN      NS      l.gtld-servers.net.
com.                    172800  IN      NS      g.gtld-servers.net.
com.                    172800  IN      NS      f.gtld-servers.net.
;; Received 493 bytes from 192.5.5.241#53(f.root-servers.net) in 80 ms

hsbc.com.               172800  IN      NS      ns3.hsbc.com.
hsbc.com.               172800  IN      NS      ns4.hsbc.com.
;; Received 101 bytes from 192.55.83.30#53(m.gtld-servers.net) in 161 ms

us.hsbc.com.            7200    IN      NS      auth61.ns.uu.net.
us.hsbc.com.            7200    IN      NS      auth00.ns.uu.net.
;; Received 84 bytes from 193.108.73.36#53(ns3.hsbc.com) in 2358 ms

www.us.hsbc.com.        600     IN      NS      vhprdgss01.hsbc.com.
www.us.hsbc.com.        600     IN      NS      phprdgss01.hsbc.com.
;; Received 83 bytes from 198.6.1.182#53(auth61.ns.uu.net) in 44 ms

www.us.hsbc.com.        20      IN      A       161.113.4.6
;; Received 49 bytes from 161.113.7.248#53(vhprdgss01.hsbc.com) in 39 ms

$ dig @127.0.0.1 www.us.hsbc.com. in any

; <<>> DiG 9.6.2-P2 <<>> @127.0.0.1 www.us.hsbc.com. in any
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 22499
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.us.hsbc.com.               IN      ANY

;; Query time: 4059 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue Jul 20 13:41:58 2010
;; MSG SIZE  rcvd: 33


Would debug output help?  If so, what is the recommended verbosity setting?

Thanks!
-Dustin