From: Birta Levente <blevi.linux at gmail.com> > Can someone explain me this: > ifcfg-eth0-range1: > ONBOOT="yes" > IPADDR_START="192.168.1.48" > IPADDR_END="192.168.1.55" > CLONENUM_START="1" > Why Bcast is 192.168.1.51 and why Mask is 255.255.255.252 ? Never used ifcfg-eth0-range, but did you try 49 to 54 instead of 48 to 55? $ ipcalc 192.168.1.48/29 Address: 192.168.1.48 11000000.10101000.00000001.00110 000 Netmask: 255.255.255.248 = 29 11111111.11111111.11111111.11111 000 Wildcard: 0.0.0.7 00000000.00000000.00000000.00000 111 => Network: 192.168.1.48/29 11000000.10101000.00000001.00110 000 HostMin: 192.168.1.49 11000000.10101000.00000001.00110 001 HostMax: 192.168.1.54 11000000.10101000.00000001.00110 110 Broadcast: 192.168.1.55 11000000.10101000.00000001.00110 111 Hosts/Net: 6 Class C, Private Internet JD