Hello! > Ooops, i meant dynamically enabling/disabling udp checksuming as we do for "Dynamic" disabling is made with setsockopt() and strongly not recommended in any curcumstances. Presence of this terrible option in solaris is explained mainly by its difficult infancy. It was born as 4.2BSD, which had no checksum on udp. 8) > icmp_echo_ignore... :) It is also strongly not recommended, by the way. In any curcumstances. Alexey - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.rutgers.edu