Replicated account stop messages

[Nicola Iotti]

Hi All,
    we have a problem with some Radius Client that, cause of
malfunction, sometimes re-send a specific stop RADIUS messages several
times, it just change the stop time but all the other attribute and data
are the same (so it easy to find it).
We use freeradius v.2 as proxy so all these messages pass through it,
and we'd like that freeradius forwards to the Main RADIUS server just
the first one.

Is it possible and how?
Following you can find an abstract of the log referring to this issue:

Thu May 20 16:59:12 2010
    User-Name = "XXXXXXXX"
    NAS-IP-Address = 172.24.196.190
    NAS-Port = 0
    Acct-Status-Type = Stop
    Acct-Session-Id = "1F000C38"
    Acct-Output-Octets = 115924
    Acct-Input-Octets = 597749
    Acct-Output-Packets = 1126
    Acct-Input-Packets = 1060
    Session-Timeout = 2705
    Idle-Timeout = 600
    Event-Timestamp = "May 20 2010 07:15:32 CEST"
    Called-Station-Id = "00-50-E8-01-F1-26"
    Calling-Station-Id = "00-1C-C4-1A-30-72"
    Acct-Session-Time = 365
    Acct-Terminate-Cause = 23
    NAS-Identifier = "CC03010010"
    NAS-Port-Type = Async
    Framed-IP-Address = 10.0.0.22
    Nomadix-Subnet = ""
    Nomadix-Attr-17 = 0x00000000
    WISPr-Location-ID = "isocc=IT,cc=39,ac=0522,network=Guglielmo"
    Acct-Delay-Time = 11
    Client-IP-Address = 65.199.220.1
    Acct-Unique-Session-Id = "4b1d2e908270a790"
    Stripped-User-Name = "XXXXXXX"
    Realm = "zf"
    Freeradius-Proxied-To = 192.168.27.108
    Timestamp = 1274367552


Thu May 20 16:59:17 2010
    User-Name = "XXXXXXX"
    NAS-IP-Address = 172.24.196.190
    NAS-Port = 0
    Acct-Status-Type = Stop
    Acct-Session-Id = "1F000C38"
    Acct-Output-Octets = 115924
    Acct-Input-Octets = 597749
    Acct-Output-Packets = 1126
    Acct-Input-Packets = 1060
    Session-Timeout = 2705
    Idle-Timeout = 600
    Event-Timestamp = "May 20 2010 07:15:37 CEST"
    Called-Station-Id = "00-50-E8-01-F1-26"
    Calling-Station-Id = "00-1C-C4-1A-30-72"
    Acct-Session-Time = 365
    Acct-Terminate-Cause = 23
    NAS-Identifier = "CC03010010"
    NAS-Port-Type = Async
    Framed-IP-Address = 10.0.0.22
    Nomadix-Subnet = ""
    Nomadix-Attr-17 = 0x00000000
    WISPr-Location-ID = "isocc=IT,cc=39,ac=0522,network=Guglielmo"
    Acct-Delay-Time = 16
    Client-IP-Address = 65.199.220.1
    Acct-Unique-Session-Id = "4b1d2e908270a790"
    Stripped-User-Name = "XXXXXXX"
    Realm = "zf"
    Freeradius-Proxied-To = 192.168.27.108
    Timestamp = 1274367557

Best Regards
Nicola