/dev/random

CentOS(ish) Static IP

# /etc/resolv.conf
domain foo.bar.com
nameserver 10.10.10.12
nameserver 10.10.10.11

 

# /etc/sysconfig/network
NETWORKING=yes
HOSTNAME=pi
GATEWAY=10.10.10.1

 

# /etc/sysconfig/network-scripts/ifcfg-eth0 
DEVICE=eth0
#BOOTPROTO=dhcp
BOOTPROTO=static
HWADDR="aa:bb:cc:11:22:33"
IPADDR=10.10.11.215
NETMASK=255.255.248.0
ONBOOT=yes
GATEWAY=10.10.10.1

 

$ rm /etc/udev/rules.d/70-persistent-net.rules && reboot