This is a Perl hook that is called once for each request before the request is forwarded to a remote RADIUS or RadSec server. It allows you to modify the forwarded request without changing the current one. ForwardHook receives the following arguments:

Here is an example of using ForwardHook:

ForwardHook sub { my $p = $_[0]; my $fp = $_[1]; \
                  $fp->add_attr('OSC-AVPAIR', 'Added by ForwardHook'); }