centos7dhcp
[root@qiantang36 ~]# ll /etc/sysconfig/network-scripts/total 240
drwxr-xr-x. 2 root root 4096 Oct 30 23:50 .
drwxr-xr-x. 6 root root 4096 Oct 30 23:51 ..
-rw-r--r--. 1 root root 383 Oct 30 23:50 ifcfg-ens160
-rw-r--r--. 1 root root 254 Aug 24 2018 ifcfg-lo
lrwxrwxrwx. 1 root root 24 Oct 30 23:42 ifdown -> ../../../usr/sbin/ifdown
-rwxr-xr-x. 1 root root 654 Aug 24 2018 ifdown-bnep
-rwxr-xr-x. 1 root root 6532 Aug 24 2018 ifdown-eth
-rwxr-xr-x. 1 root root 781 Aug 24 2018 ifdown-ippp
-rwxr-xr-x. 1 root root 4540 Aug 24 2018 ifdown-ipv6
lrwxrwxrwx. 1 root root 11 Oct 30 23:42 ifdown-isdn -> ifdown-ippp
-rwxr-xr-x. 1 root root 2130 Aug 24 2018 ifdown-post
-rwxr-xr-x. 1 root root 1068 Aug 24 2018 ifdown-ppp
-rwxr-xr-x. 1 root root 870 Aug 24 2018 ifdown-routes
-rwxr-xr-x. 1 root root 1456 Aug 24 2018 ifdown-sit
-rwxr-xr-x. 1 root root 1621 Mar 17 2017 ifdown-Team
-rwxr-xr-x. 1 root root 1556 Mar 17 2017 ifdown-TeamPort
-rwxr-xr-x. 1 root root 1462 Aug 24 2018 ifdown-tunnel
lrwxrwxrwx. 1 root root 22 Oct 30 23:42 ifup -> ../../../usr/sbin/ifup
-rwxr-xr-x. 1 root root 12415 Aug 24 2018 ifup-aliases
-rwxr-xr-x. 1 root root 910 Aug 24 2018 ifup-bnep
-rwxr-xr-x. 1 root root 13475 Aug 24 2018 ifup-eth
-rwxr-xr-x. 1 root root 12075 Aug 24 2018 ifup-ippp
-rwxr-xr-x. 1 root root 11893 Aug 24 2018 ifup-ipv6
lrwxrwxrwx. 1 root root 9 Oct 30 23:42 ifup-isdn -> ifup-ippp
-rwxr-xr-x. 1 root root 650 Aug 24 2018 ifup-plip
-rwxr-xr-x. 1 root root 1064 Aug 24 2018 ifup-plusb
-rwxr-xr-x. 1 root root 4997 Aug 24 2018 ifup-post
-rwxr-xr-x. 1 root root 4154 Aug 24 2018 ifup-ppp
-rwxr-xr-x. 1 root root 2001 Aug 24 2018 ifup-routes
-rwxr-xr-x. 1 root root 3303 Aug 24 2018 ifup-sit
-rwxr-xr-x. 1 root root 1755 Mar 17 2017 ifup-Team
-rwxr-xr-x. 1 root root 1876 Mar 17 2017 ifup-TeamPort
-rwxr-xr-x. 1 root root 2711 Aug 24 2018 ifup-tunnel
-rwxr-xr-x. 1 root root 1836 Aug 24 2018 ifup-wireless
-rwxr-xr-x. 1 root root 5419 Aug 24 2018 init.ipv6-global
-rw-r--r--. 1 root root 20671 Aug 24 2018 network-functions
-rw-r--r--. 1 root root 31027 Aug 24 2018 network-functions-ipv6
[root@qiantang36 ~]# ll /etc/sysconfig/network-scripts/ifcfg-ens160
-rw-r--r--. 1 root root 383 Oct 30 23:50 /etc/sysconfig/network-scripts/ifcfg-ens160
[root@qiantang36 ~]# cat /etc/sysconfig/network-scripts/ifcfg-ens160
TYPE="Ethernet"
PROXY_METHOD="none"
BROWSER_ONLY="no"
BOOTPROTO="dhcp"
DEFROUTE="yes"
IPV4_FAILURE_FATAL="no"
IPV6INIT="yes"
IPV6_AUTOCONF="yes"
IPV6_DEFROUTE="yes"
IPV6_FAILURE_FATAL="no"
IPV6_ADDR_GEN_MODE="stable-privacy"
NAME="ens160"
UUID="487af533-6b55-4a03-bc81-955e0eb09193"
DEVICE="ens160"
ONBOOT="yes"
DNS1="192.168.3.1"
DNS2="223.5.5.5"
DNS3="223.6.6.6"
IPV6_PRIVACY="no"
[root@qiantang36 ~]# systemctl restart network
[root@qiantang36 ~]#
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