
This is a WIDE version of tcpdpriv that was originally written by 
Greg Minshall <minshall@siara.com>.

The original version is tcpdpriv-1.1.10 and extended and modified to
make it a standard tool inside the WIDE Project in order to remove
privacy information from tcpdump outputs.
The original tcpdpriv is available from
http://ita.ee.lbl.gov/html/contrib/tcpdpriv.html

Modified defaults:
	The original default values are the most conservative ones.
	They are modified to meet the WIDE standard setting and
	equivalent to
		-A50 -C4 -M99 -P99

	-A50	IP addresses are scrambled preserving matching
		prefixes.
		Specify -A0 to map addresses to simple integers.

	-C4	IP classes (class A-D) are also preserved.

	-M99	All multicast addresses are not scrambled.

	-P99	TCP and UDP port numbers are not scrambled.

	Note that WIDE is a research network and the required protection
	level is not so high.  Our default setting is probably too loose
	for other organizations.

Added features:

	- IPv6 support
		ICMPv6, TCP, UDP, IPv4 over IPv6 are recognized.
	- preserve TCP options
	- ARP support
	- ICMP support
	- DLT_ATM_RFC1483 support
	- try to avoid mapping to unusual adresses such as
	  multicast addresses, private addresses.


					Kenjiro Cho
					kjc@wide.ad.jp

CHANGES

2000/01/24	strengthen ipv6 support:
		- scramble link-local and site-local addresses which
		  contains mac address information.
		- clear low-order bits in solicited-node multicast address
1999/10/18	version 1.0
1999/10/16	support IPv6 including icmp6, tcp, udp over IPv6.
		support DLT_ATM_RFC1483
1999/10/14	add partial support of icmp, arp and dns
1999/10/12	fix a devfs problem
1999/03/08	leave tcp options
