discussion on  
http://yro.slashdot.org/article.pl?sid=04/10/06/0022224&tid=193&tid=155&tid=95&tid=17

Jacob S. Barrett wrote:

>Today I received an information packet from Acacia Technologies Group 
>informing me that I was in volation of their patent on "IAR" [1].  IAR is a 
>US Patent 6,226,677 [2].  That packet suggest that I must license their 
>technology or face legal action.  Has anyone else received this same 
>extortion letter?
>
>The claims the the patent text lead me to believe they don't have much to 
>stand on.  If I read the abstract and claim one correctly then it doesn't 
>cover a system that doesn't change the destination address.  Any solution 
>that uses the IPFW fwd [3] rule would not modify the destination address and 
>therefore does not meet claim 1.  I'm I correct in my logic?
>
>What are your takes on this matter?
>
>References:
>1) http://www.acaciatechnologies.com/technology_iar.htm
>2) 
>http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO1&Sect2=HITOFF&d=PALL&p=1&u=/netahtml/srchnum.htm&r=1&f=G&l=50&s1=6,226,677.WKU.&OS=PN/6,226,677&RS=PN/6,226,677
>3) 
>http://www.freebsd.org/cgi/man.cgi?query=ipfw&apropos=0&sektion=0&manpath=FreeBSD+4.10-stable&format=html
>
>  
>