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