Trying to overwrite `/lib64', which is also in package xfsprogs

[Marco <marcob@inventati.org>]

Hello,

 Today I tried to upgrade my system, but encountered the following:

dpkg: error processing /var/cache/apt/archives/libc6_2.7-10_amd64.deb (--unpack):
 trying to overwrite `/lib64', which is also in package xfsprogs
Errors were encountered while processing:
 /var/cache/apt/archives/libc6_2.7-10_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

The installed xfsprogs is:

# apt-cache policy xfsprogs
xfsprogs:
  Installed: 2.9.8-1
  Candidate: 2.9.8-1
  Version table:
 *** 2.9.8-1 0
        650 http://debian.fastweb.it testing/main Packages
        600 http://debian.fastweb.it unstable/main Packages
        100 /var/lib/dpkg/status
     2.8.11-1 0
        700 http://debian.fastweb.it stable/main Packages

 How can I solve that?


Thank you very much in advance,

Marco