Hi folks,
finally I finished my work on a patch that enables "cache file" usage when
protocol "irrd" is used.

The patch is attached to this mail (irrd-cache-usage-patch).

When a "cache file" is given with option "-f" and when resolving route- or
as-sets the patch makes the "irrd" protocol implementation look up the
"cache file" before querying an IRR server.
route-set definitions in the "cache file" can be composed of prefix-ranges
and/or references to other route-sets (route-set names) being defined either
in a "cache file" or in the database of an IRR server. as-sets can be composed
of AS numbers and/or references to other as-sets (as-set names) also being
defined either in a "cache file" or in the database of an IRR server.

The patch has been successfully integrated in version 4.8.5 and I had no
problems with it.

Please try it! :-) feedbacks are welcome.

Cheers!

  Hagen Boehm