In article <[email protected]>,
 Christophe Lermytte <[email protected]> wrote:

> Hello,
> 
> I'm trying to find out what the server behavior should be in the following 
> situation:
> 
> client -> server1 -> server2
> 
> client asks server1 to recursively resolve a name
> server1 does not know and asks server2
> server2 sends an ICMP Port Unreachable to server1
> 
> Is there something server1 can send to client, instead of making client wait 
> until it gives up?

Server1 could send a response with the SERVFAIL error code.  I think 
BIND will do this if all the servers for the domain report errors.

-- 
Barry Margolin, [email protected]
Arlington, MA
*** PLEASE don't copy me on replies, I'll read them in the group ***
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