[Samba] Osync error for sysvol directory : rsync: set_acl: sys_acl_set_file Invalid argument (22)

[Sam]

Hello,

I got many errors on files when synchronizing the sysvol directory 
between 2 AD DC with osync :

...
rsync: set_acl: 
sys_acl_set_file(ariane.intra/Policies/{2487894F-DA69-4CE1-82A9-D9B4EFE5D32E}/Adm, 
ACL_TYPE_ACCESS): Invalid argument (22)
rsync: set_acl: 
sys_acl_set_file(ariane.intra/Policies/{2487894F-DA69-4CE1-82A9-D9B4EFE5D32E}/Adm/admfiles.ini, 
ACL_TYPE_ACCESS): Invalid argument (22)
rsync: set_acl: 
sys_acl_set_file(ariane.intra/Policies/{2487894F-DA69-4CE1-82A9-D9B4EFE5D32E}/Adm/conf.adm, 
ACL_TYPE_ACCESS): Invalid argument (22)
rsync: set_acl: 
sys_acl_set_file(ariane.intra/Policies/{2487894F-DA69-4CE1-82A9-D9B4EFE5D32E}/Adm/inetres.adm, 
ACL_TYPE_ACCESS): Invalid argument (22)
...

I have read here that it's a rsync limitation ( files or dirs with more 
than 16 ACLs are not rsynced correctly ) 
https://bugzilla.samba.org/show_bug.cgi?id=7865

I have rsync  version 3.0.9  protocol version 30, and it seems that 
version 3.1.1 correct that point (- Fixed a problem reading more than 16 
ACLs on some OSes. )

How can I upgrade rsync to this version?

I have a  SMP Debian 3.2.73-2+deb7u2*x86_64* GNU/Linux and even debian 
backport says that 3.0.9 is the more recent...

Thanks for helping! :)

Sam