attribute filter prior to prxy

[Alexandre Chapellon]

Hello,

I want to remove all attributes from packets to proxy except some of
them i do say are allowed...

I thought the following would do the job in the pre-proxy section, but
when i check what the freeradius proxies (using tcpdump) i see the
filter.... just filters nothing

DEFAULT
    Acct-Status-Type =* ANY,
    User-Name =* ANY,
    Framed-IP-Address =* ANY,
    Qos-Policy-Metering =* ANY,
    Ip_Address_Pool_Name =* ANY,
    Class =* ANY