add loopback interface to Linux


FRRouting Free Range Routing or Zebra


Centos

ifconfig lo:10 1.1.45.10 netmask 255.255.255.255 up
Ubuntu

ip link add name loop1 type dummy

ip link set loop1 up

ip addr add 10.1.45.10/32 dev loop1

grml

vi  /etc/network/interfaces