XPost: comp.os.linux.networking   
   From: barmar@alum.mit.edu   
      
   In article , Noob  wrote:   
      
   > I mistakenly believed gethostbyname would issue a request   
   > for "ANY" record.   
      
   Applications should practically NEVER request ANY records.  Unless   
   you're querying an authoritative server for the domain, ANY != ALL.  In   
   the normal case where you're querying a caching server, it will only   
   return the records it happens to have cached already, and there's no   
   reason to assume that this is all the record types for the name (the   
   only scenario where that's likely to happen is if someone requests ANY   
   when the server doesn't have anything cached for the name -- it will   
   then forward the ANY request to an authoritative server and get back   
   everything).   
      
   --   
   Barry Margolin, barmar@alum.mit.edu   
   Arlington, MA   
   *** PLEASE post questions in newsgroups, not directly to me ***   
      
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