Some questiones about DNS Redirection

[Barry Margolin]

In article <49256874.002660ED.00 at mail.dacomst.com>,  <scyoon at dacom.net> wrote:
>  1. Some people test DNS redirection. They said that redirected DNS query from
>  a client resolver
>  is success(Case 1), but query through a local DNS Server is fail(Case 2). What
>  is the difference between two cases?
>   Case 1: Client PC  --- L4 Switch (Alteon 180) ---- DNS Server      = success
>   Case  2:  Client PC  --- local DNS Server --- L4 Switch (Alteon 180) ---- DNS
>  Server  = fail
>    Are there any differences between query packet format or flags ?

Clients usually send queries with the Recursion Desired flag set.  Caching
DNS servers usually send queries with this flag not set.

-- 
Barry Margolin, barmar at bbnplanet.com
GTE Internetworking, Powered by BBN, Burlington, MA
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