请问dig出现循环查找的问题,请高手指点
我们出现这样的情况,为何出现红色所示的信息,理论上ns11.edong.com应该给出www.4008812356.com 的A记录。
是否是ns11.edong.com上配置错误?怎样的错误配置,会导致循环查找呢?请高手指点。。。
C:\Documents and Settings\Administrator>dig @8.8.8.8 www.4008812356.com +trace
; <<>> DiG 9.3.2 <<>> @8.8.8.8 www.4008812356.com +trace
。。。。
com. 172800 IN NS d.gtld-servers.net.
com. 172800 IN NS i.gtld-servers.net.
com. 172800 IN NS g.gtld-servers.net.
com. 172800 IN NS m.gtld-servers.net.
com. 172800 IN NS e.gtld-servers.net.
com. 172800 IN NS c.gtld-servers.net.
com. 172800 IN NS j.gtld-servers.net.
com. 172800 IN NS k.gtld-servers.net.
com. 172800 IN NS f.gtld-servers.net.
com. 172800 IN NS h.gtld-servers.net.
com. 172800 IN NS l.gtld-servers.net.
com. 172800 IN NS b.gtld-servers.net.
com. 172800 IN NS a.gtld-servers.net.
;; Received 496 bytes from 192.5.5.241#53(f.root-servers.net) in 250 ms
4008812356.com. 172800 IN NS ns11.edong.com.
4008812356.com. 172800 IN NS ns12.edong.com.
;; Received 112 bytes from 192.31.80.30#53(d.gtld-servers.net) in 281 ms
. 3600000 IN NS D.ROOT-SERVERS.NET.
. 3600000 IN NS E.ROOT-SERVERS.NET.
. 3600000 IN NS F.ROOT-SERVERS.NET.
. 3600000 IN NS G.ROOT-SERVERS.NET.
. 3600000 IN NS H.ROOT-SERVERS.NET.
. 3600000 IN NS I.ROOT-SERVERS.NET.
. 3600000 IN NS J.ROOT-SERVERS.NET.
. 3600000 IN NS K.ROOT-SERVERS.NET.
. 3600000 IN NS L.ROOT-SERVERS.NET.
. 3600000 IN NS M.ROOT-SERVERS.NET.
. 3600000 IN NS A.ROOT-SERVERS.NET.
. 3600000 IN NS B.ROOT-SERVERS.NET.
. 3600000 IN NS C.ROOT-SERVERS.NET.
;; Received 247 bytes from 61.147.124.145#53(ns11.edong.com) in 78 ms
com. 172800 IN NS l.gtld-servers.net.
com. 172800 IN NS h.gtld-servers.net.
com. 172800 IN NS b.gtld-servers.net.
com. 172800 IN NS e.gtld-servers.net.
com. 172800 IN NS g.gtld-servers.net.
com. 172800 IN NS j.gtld-servers.net.
com. 172800 IN NS c.gtld-servers.net.
com. 172800 IN NS m.gtld-servers.net.
com. 172800 IN NS i.gtld-servers.net.
com. 172800 IN NS a.gtld-servers.net.
com. 172800 IN NS k.gtld-servers.net.
com. 172800 IN NS d.gtld-servers.net.
com. 172800 IN NS f.gtld-servers.net.
;; Received 496 bytes from 128.8.10.90#53(D.ROOT-SERVERS.NET) in 234 ms
4008812356.com. 172800 IN NS ns11.edong.com.
4008812356.com. 172800 IN NS ns12.edong.com.
;; Received 112 bytes from 192.41.162.30#53(l.gtld-servers.net) in 281 ms
. 3600000 IN NS L.ROOT-SERVERS.NET.
. 3600000 IN NS M.ROOT-SERVERS.NET.
. 3600000 IN NS A.ROOT-SERVERS.NET.
. 3600000 IN NS B.ROOT-SERVERS.NET.
. 3600000 IN NS C.ROOT-SERVERS.NET.
. 3600000 IN NS D.ROOT-SERVERS.NET.
. 3600000 IN NS E.ROOT-SERVERS.NET.
. 3600000 IN NS F.ROOT-SERVERS.NET.
. 3600000 IN NS G.ROOT-SERVERS.NET.
. 3600000 IN NS H.ROOT-SERVERS.NET.
. 3600000 IN NS I.ROOT-SERVERS.NET.
. 3600000 IN NS J.ROOT-SERVERS.NET.
. 3600000 IN NS K.ROOT-SERVERS.NET.
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ns11.edong.com上没有配置域名的A记录。而这台DNS没有关闭递归查询,进行递归查询,产生的反复