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<DIV>We have a problem that use dig 9.9 ,the delay is too large.</DIV>
<DIV>The default behavior of dig changed in 9.9 to always use EDNS and set the AD bit.<BR>But I set +noedns +nodnssec +noadflag£¬we still get a large delay.The window version similarly is better.Using the +noedns +nodnssec +noadflag is very affective.</DIV>
<DIV>How can fix the problem in the ubantu</DIV>
<DIV>&nbsp;</DIV>
<DIV><A href="mailto:libin@nocserver:~$">libin@nocserver:~$</A> sudo dig <A href="http://www.qq.com/">www.qq.com</A> +trace +noedns +nodnssec +noadflag</DIV>
<DIV>; &lt;&lt;&gt;&gt; DiG 9.9.5-3-Ubuntu &lt;&lt;&gt;&gt; <A href="http://www.qq.com/">www.qq.com</A> +trace +noedns +nodnssec +noadflag<BR>;; global options: +cmd<BR>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 345366&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; l.root-servers.net.<BR>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 345366&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; j.root-servers.net.<BR>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 345366&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; c.root-servers.net.<BR>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 345366&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; e.root-servers.net.<BR>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 345366&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; m.root-servers.net.<BR>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 345366&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; f.root-servers.net.<BR>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 345366&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; b.root-servers.net.<BR>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 345366&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; g.root-servers.net.<BR>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 345366&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; a.root-servers.net.<BR>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 345366&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; h.root-servers.net.<BR>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 345366&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; k.root-servers.net.<BR>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 345366&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; i.root-servers.net.<BR>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 345366&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; d.root-servers.net.<BR>;; Received 496 bytes from 202.96.128.86#53(202.96.128.86) in 207 ms</DIV>
<DIV>com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; d.gtld-servers.net.<BR>com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; b.gtld-servers.net.<BR>com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; h.gtld-servers.net.<BR>com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; e.gtld-servers.net.<BR>com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; k.gtld-servers.net.<BR>com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; a.gtld-servers.net.<BR>com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; f.gtld-servers.net.<BR>com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; g.gtld-servers.net.<BR>com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; c.gtld-servers.net.<BR>com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; l.gtld-servers.net.<BR>com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; i.gtld-servers.net.<BR>com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; j.gtld-servers.net.<BR>com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; m.gtld-servers.net.<BR>;; Received 500 bytes from 192.33.4.12#53(c.root-servers.net) in 15901 ms</DIV>
<DIV>qq.com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; ns1.qq.com.<BR>qq.com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; ns2.qq.com.<BR>qq.com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; ns3.qq.com.<BR>qq.com.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 172800&nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; ns4.qq.com.<BR>;; Received 244 bytes from 192.33.14.30#53(b.gtld-servers.net) in 10220 ms</DIV>
<DIV><A href="http://www.qq.com/">www.qq.com</A>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 86400 &nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; ns-tel2.qq.com.<BR><A href="http://www.qq.com/">www.qq.com</A>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 86400 &nbsp; IN&nbsp; &nbsp; &nbsp; NS&nbsp; &nbsp; &nbsp; ns-tel1.qq.com.<BR>;; Received 136 bytes from 183.60.52.202#53(ns1.qq.com) in 5022 ms</DIV>
<DIV><A href="http://www.qq.com/">www.qq.com</A>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 300 &nbsp; &nbsp; IN&nbsp; &nbsp; &nbsp; A&nbsp;&nbsp; &nbsp; &nbsp; 14.17.32.211<BR><A href="http://www.qq.com/">www.qq.com</A>.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; &nbsp; &nbsp; 300 &nbsp; &nbsp; IN&nbsp; &nbsp; &nbsp; A&nbsp;&nbsp; &nbsp; &nbsp; 183.60.15.153<BR>;; Received 60 bytes from 101.226.66.18#53(ns-tel1.qq.com) in 30 ms</DIV>