On 11/09/2012 02:07 PM, Helmut Drodofsky wrote: > Helo, > > we use recent to control ip traffic. > kernel 2.6.18-308.13.1.el5 : all is OK > kernel 2.6.18-308.16.1.el5 : the first recent statement causes an error. > E.g.: > iptables -A INPUT -m state --state NEW -m recent --set -p tcp --dport 80 > iptables: Unknown error 18446744073709551615 > > The man pages say: recent is supported. > > CentOS 6: is OK > > Knows anyone more? Error != unsupported Check dmesg if it contains any hints on what iptables doesn't like about that command. Regards, Dennis