No upload traffic accounting (RRD graphs)

[vielfede]

Hello,
since 2.2.5 upgrade (from 2.1.5) RRD VDSL interface Graph does not show (all) upload traffic anymore.
VDSL interface is used for Open VPNs traffic only
As you can see on image in attachment. (upload VPN traffic is much more than…)
Indeed I was able to see some traffic coming out (on graphs) when i used that interface to navigate on internet i.e. I saw some upload traffic coming from lan clients (I think).
It seems like upload vpn traffic was not considered

I got 5 nic, only VDSL is affected

I tried to disable traffic shaping, clear RRD data, etc... with no success.

Here it is pfctl output....

[2.2.5-RELEASE][admin@pfsmarisiga.bellunum]/root: /sbin/pfctl -vvsI -i em0
em0
        Cleared:     Mon Nov  9 17:06:36 2015
        References:  38
        In4/Pass:    [ Packets: 21647812           Bytes: 7455339316         ]
        In4/Block:   [ Packets: 33718              Bytes: 2740017            ]
        Out4/Pass:   [ Packets: 7744828            Bytes: 2130457586         ]
        Out4/Block:  [ Packets: 60                 Bytes: 10355              ]
        In6/Pass:    [ Packets: 707                Bytes: 45680              ]
        In6/Block:   [ Packets: 1628               Bytes: 162800             ]
        Out6/Pass:   [ Packets: 2                  Bytes: 172                ]
        Out6/Block:  [ Packets: 0                  Bytes: 0                  ]