Unbound DNS Default Response

Using the current SVN of the Unbound DNS resolver. I would like to have a configuration 开发者_JAVA技巧where it will hand back a default IP? IE opendns if you attempt to resolve nonexistentdomain.com it will return the IP of their "not-found" web server.

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This isn't possible with Unbound.

Unbound can override external data, but it has no support in its local-zone: configuration setting for synthesising records for a domain only if the originally requested external data can't be resolved.

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It's not possible with the local-zone but it's trivial with the python module hooks.

Performance on the other hand... :-)