* Fix the logclosing bug.

* Fix the resolve bug (Debian bug #50359) due to resolver delay.
  Basicaly, log the time we received the packet, and not the time
  we wrote the line into the log file / syslog.

* Make ICMP logging more verbose.

* Allow to use different syslog levels.

* Detect attacks.

* Detect traceroute queries.

* Detect nmap null scans.

* Log outgoing packets.

* Write support for ICMPv6.

* Rewrite the program using libpcap. This has been started (see version
  1.99.x).
