127.0.0.1 upgrading to amavisd-new-2.10.1

[Marco]

Hello,

  I have the following trouble. Upgrading from amavisd-new-2.9.1 to  
amavisd-new-2.10.1, 127.0.0.1 appears in log as an external IP:

2015-09-25T09:48:07.458350+02:00 03aaas amavis[16339]: (16339-01)  
Passed SPAMMY {RelayedTaggedInbound}, [127.0.0.1] [35.104.44.98]  
<marco at example.com> -> <guido.guidi at example.com>, mail_id:  
h8aMwrubKrNb, Hits: 7.761, size: 426, queued_as: 3nMlj333q5zFpVZ,  
19997 ms

...and is passed as orig_client to Postfix:
2015-09-25T09:48:07.432341+02:00 03aaas postfix/smtpd[16396]:  
3nMlj333q5zFpVZ: client=localhost[127.0.0.1],  
orig_client=unknown[127.0.0.1]

How can I restore the amavisd-2.9 behaviour?

Thank you very much
Best Regards
Marco