Hi All, I am confuesd abt the validity of IP addresses... By convention or standard IP address are classiffied like Class A(0-127),Class B(128-191) class C(192-223),class D(224-239) and Class E( 240-247).. My question here is : are the following IP addresses valid for assignment.. If not why? 0.0.0.0 10.0.0.0 126.0.0.0 192.0.0.0 etc.. I searched in Richard Steven's books .... But, I coudnt' find any convincing answers.....Can somebody answer these questions.... thanks, -HG - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html