MAIN: Try using PF_PACKET (so ip works with wrong checksums)

ipv4.c: __FreeBSD hack needed on solaris too?
ipv4.h: __FreeBSD hack needed for fragment offset
rip.c: handling of -re is sick
ripng.c: handling of -re is sick, check conformance to spec

ALL
- DNS
- RSVP (satish  chandodi <chandodi_satish@rediffmail.com>)
- OSPF and OSPF6 (armite <armite@163.com>)
- ARP (suggested by Christian Schmid <webmaster@shop-services.de>)
- IPX (if I can find the spec)
- bugfixes
- ncurses and/or X interface
- allow comments in packet data files
- script to automatically frag packets (John Deatherage <Jdeatherage@CQOS.COM>)
- XML data files? (Antti Tuominen <ajtuomin@tml.hut.fi>)
