On 7/6/2011 5:52 AM, Feng He wrote:
When I dig this:
dig s1.mytest.blogchina.org +trace
I got many these info:
mytest.blogchina.org. 600 IN NS ns1.dnsv5.com.
mytest.blogchina.org. 600 IN NS ns2.dnsv5.com.
;; BAD (HORIZONTAL) REFERRAL
;; Received 95 bytes from 183.60.59.217#53(ns1.dnsv5.com) in 6 ms
mytest.blogchina.org. 600 IN NS ns1.dnsv5.com.
mytest.blogchina.org. 600 IN NS ns2.dnsv5.com.
;; BAD (HORIZONTAL) REFERRAL
;; Received 95 bytes from 112.90.143.36#53(ns1.dnsv5.com) in 116 ms
mytest.blogchina.org. 600 IN NS ns2.dnsv5.com.
mytest.blogchina.org. 600 IN NS ns1.dnsv5.com.
;; BAD (HORIZONTAL) REFERRAL
;; Received 95 bytes from 180.153.162.153#53(ns2.dnsv5.com) in 27 ms
mytest.blogchina.org. 600 IN NS ns2.dnsv5.com.
mytest.blogchina.org. 600 IN NS ns1.dnsv5.com.
;; BAD (HORIZONTAL) REFERRAL
;; Received 95 bytes from 221.130.12.61#53(ns2.dnsv5.com) in 165 ms
mytest.blogchina.org. 600 IN NS ns2.dnsv5.com.
mytest.blogchina.org. 600 IN NS ns1.dnsv5.com.
;; BAD (HORIZONTAL) REFERRAL
;; Received 95 bytes from 122.225.217.194#53(ns2.dnsv5.com) in 24 ms
mytest.blogchina.org. 600 IN NS ns1.dnsv5.com.
mytest.blogchina.org. 600 IN NS ns2.dnsv5.com.
What does this death loop mean? How it happened?
Thanks.
That is not a loop at all. If you do an A record query for
ns1.dnsv5.com and ns2.dnsv5.com, you get four A records returned each.
However at least from here and it appears from where you are doing the
querys, these name servers are not responding. So Dig is just trying
all A records returned.
Lyle Giese
LCR Computer Services, Inc.
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