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

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

       Show how the IP protocol is filtered:

           dftest ip

       Shows how frame 150 is filtered:

           dftest "frame.number == 150"

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

       filter

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

wireshark-filter(4)

                                                   2022-03-04                                          DFTEST(1)

dftest [ <filter> ]