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=head1 NAME

dftest - Shows display filter byte-code, for debugging dfilter routines.

=head1 SYNOPSIS

B<dftest>
S<[ E<lt>filterE<gt> ]>

=head1 DESCRIPTION

B<dftest> is a simple tool which compiles a display filter and shows its bytecode.

=head1 OPTIONS

=over 4

=item filter

The display filter expression. If needed it has to be quoted.

=back

=head1 EXAMPLES

Show how the IP protocol is filtered:

    dftest ip

Shows how frame 150 is filtered:

    dftest "frame.number == 150"

=head1 SEE ALSO

wireshark-filter(4)