* Make old ANSI-only compilers support logs bigger than 4GB (will be done
only if there is a user request)

* add a warning in TestLogs() for redundant file names / possibility to append file.

* implement dns caching

* port log
[NOT] PORT nb|<nb|>nb|all
* Type (can be cumulative)
TYPE TCP|UDP|ICMP

* file keeping the logs to prevent loosing data if machine is rebooted ?

***** Rewrite output to accept modules ******
* be able to configure the output file format.

* Include date in output file

* Output On which network interface ipfm logs in log file.

* Output Bandwidth (bps) instead of bytes in log file.

* Output how much time the log ran in output file (especially in case of a kill -HUP)

* Output total D/L size(bytes) or Bandwidth(bps)

* HTML output
* CISCO accounting process compatible format : host source totaltrafic numberofpacket
