It would be useful to have something that would take an IP address range and return the minimum coverage CIDR for that block (for use in feeding to iptables).
For those addicted to command line (gipsc needs gnome), try netmask : #netmask -c 192.168.10.224:192.168.10.255 192.168.10.224/27 #netmask -c 192.168.10.23:192.168.10.55 192.168.10.23/32 192.168.10.24/29 192.168.10.32/28 192.168.10.48/29 #netmask -r 192.168.10.48/29 192.168.10.48- 192.168.10.55 -- Guillaume Avez Administrateur Systemes et Reseaux tel. +33 169 07 34 55 mailto:SysAdmin.Avez@NetCourrier.com