udeb's in testing that don't (anymore) correspond to any testing source:
 package | version | arch | source 
---------+---------+------+--------
(0 rows)

udeb's in unstable that should be in testing too:
 package | version | arch | source 
---------+---------+------+--------
(0 rows)

udeb's in t-p-u that should be in testing too:
 package | version | arch | source 
---------+---------+------+--------
(0 rows)