cache dns server use tcp to query other dns server

Barry Margolin barmar at alum.mit.edu
Fri Jan 6 06:24:14 UTC 2006


In article <dpkon2$ms1$1 at sf1.isc.org>,
 "Alex Tang" <alextang at cms.hkcable.com> wrote:

> or if my cache dns server cannot get answer from other dns server by udp , 
> will my cache dns server change to use tcp to query the no answered other dns 
> server  ?

No, BIND doesn't do that.  It only uses TCP for ordinary queries when 
the UDP attempt returns a truncated response.

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***
*** PLEASE don't copy me on replies, I'll read them in the group ***



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