Remote Name lookup problems
Ken Causey
ken at ineffable.com
Wed Jun 16 14:50:28 UTC 1999
I work with an ISP that has been receiving reports that users of other
ISPs cannot get to websites they host. In an attempt to try to diagnose
the problem I've gotten access to another ISP's primary dns server
to do some testing and I am getting some very weird responses that
I would really like some help translating.
>From the other ISP's DNS:
[root at ns1 ken]# nslookup -d2 www.wbko.com.
;; res_mkquery(0, 11.70.77.216.in-addr.arpa, 1, 12)
------------
SendRequest(), len 43
HEADER:
opcode = QUERY, id = 39233, rcode = NOERROR
header flags: query, want recursion
questions = 1, answers = 0, authority records = 0, additional
= 0
QUESTIONS:
11.70.77.216.in-addr.arpa, type = PTR, class = IN
------------
------------
Got answer (201 bytes):
HEADER:
opcode = QUERY, id = 39233, rcode = NOERROR
header flags: response, auth. answer, want recursion, recursion
avail.
questions = 1, answers = 1, authority records = 3, additional
= 3
QUESTIONS:
11.70.77.216.in-addr.arpa, type = PTR, class = IN
ANSWERS:
-> 11.70.77.216.in-addr.arpa
type = PTR, class = IN, dlen = 16
name = ns1.muhlon.com
ttl = 86400 (1 day)
AUTHORITY RECORDS:
-> 70.77.216.IN-ADDR.ARPA
type = NS, class = IN, dlen = 2
nameserver = ns1.muhlon.com
ttl = 86400 (1 day)
-> 70.77.216.IN-ADDR.ARPA
type = NS, class = IN, dlen = 16
nameserver = access.vci.net
ttl = 86400 (1 day)
-> 70.77.216.IN-ADDR.ARPA
type = NS, class = IN, dlen = 6
nameserver = ns2.muhlon.com
ttl = 86400 (1 day)
ADDITIONAL RECORDS:
-> ns1.muhlon.com
type = A, class = IN, dlen = 4
internet address = 216.77.70.11
ttl = 86400 (1 day)
-> access.vci.net
type = A, class = IN, dlen = 4
internet address = 207.162.160.11
ttl = 164540 (1 day 21 hours 42 mins 20 secs)
-> ns2.muhlon.com
type = A, class = IN, dlen = 4
internet address = 216.77.70.12
ttl = 86400 (1 day)
------------
Server: ns1.muhlon.com
Address: 216.77.70.11
;; res_mkquery(0, www.wbko.com, 1, 1)
------------
SendRequest(), len 30
HEADER:
opcode = QUERY, id = 39234, rcode = NOERROR
header flags: query, want recursion
questions = 1, answers = 0, authority records = 0, additional
= 0
QUESTIONS:
www.wbko.com, type = A, class = IN
------------
------------
Got answer (30 bytes):
HEADER:
opcode = QUERY, id = 39234, rcode = SERVFAIL
header flags: response, want recursion, recursion avail.
questions = 1, answers = 0, authority records = 0, additional
= 0
QUESTIONS:
www.wbko.com, type = A, class = IN
------------
*** ns1.muhlon.com can't find www.wbko.com.: Server failed
If this is done from the hosting ISPs internal network everything
works just fine. What does an rcode of SERVFAIL mean? And
I should mention that this seems to happen for many if not all
of the ISPs hosted domains.
Any help is greatly appreciated.
Ken Causey
More information about the bind-users
mailing list