Please have a look at
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=361919,
which appears to be caused by the "DNS additional section" fix. Compiling
4.60-4 without 37_upstream_patch_342619.dpatch ("approved by Philip") indeed
solved this problem.
(In short, when ignore_target_hosts causes all looked-up hosts to be
discarded, the router does not decline but routing is deferred.)
--
Magnus Holmgren