详情

1、临时添加

ip addr add .1/32 dev lo:1

重启失效

2、永久添加

cd /etc/sysconfig/network-scripts

cp ifcfg-lo ifcfg-lo:1

[root@localhost network-scripts]# cat ifcfg-lo:1

DEVICE=lo:1

IPADDR=.1

NETMASK=.255

onBOOT=yes

NAME=loopback1

[root@localhost network-scripts]# ip addr

1: lo:

link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00

inet .1/8 scope host lo

valid_lft forever preferred_lft forever

inet .1/32 brd .1 scope global lo:1

valid_lft forever preferred_lft forever

inet6 ::1/128 scope host

valid_lft forever preferred_lft forever

[root@localhost network-scripts]# ping -c1 .1

PING .1 (.1) 56(84) bytes of data.

64 bytes from .1: icmp_seq=1 ttl=64 time= ms