Hello. It happens that at the company I'm working decided to start migration of IPs tech. So they got a /48 block. I were trying to add it with: ifcfg-eth0-range1 (0 is already in use with IPv4 range): IPV6ADDR_START=xxxx IPV6ADDR_END=xxxx CLONENUM_START=0 But of course I am assuming that like in IPv4 IPADDR_START/END is implemented. Please give some guidance as I need this to done already and the hole /48 must be available and virtualized. Thanks.