Bug#820963: Backup with XferMethod smb and Samba 4.2 impossible in Debian Jessie

[Samuel Wolf]

See also:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=820963

In my eyes this is a very critical issue since BackupPC stop backup all
Windows shares.
<https://bugs.debian.org/cgi-bin/pkgreport.cgi?maint=ldrolez%40debian.org>