glibc 2.3.5-12.1 screwed up on Alpha

[Denis Barbier <barbier@linuxfr.org>]

  $ ar p nscd_2.3.5-12.1_alpha.deb control.tar.gz | tar zxf - -O ./control
  [...]
  Depends: libc6 (>= 2.3.5-12.1)

It should depend on libc6.1, like previous versions.
Does someone understand what happened?

Denis