网络地址命令_nm-dhcp-helper-优快云博客

本文链接：https://blog.youkuaiyun.com/tina_tian1/article/details/88890774

本文介绍了dhclient命令用于动态配置网络接口参数的过程，并展示了通过nslookup命令查询DNS信息的方法。包含具体的dhclient配置文件示例及DNS查询结果。

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1. dhclient命令使用动态主机配置协议动态的配置网络接口的网络参数

[root@prop-idm ~]# ps -elf | grep dhcp
4 S root 787 708 0 80 0 - 28342 poll_s Mar27 ? 00:00:00 /sbin/dhclient -d -q -sf /usr/libexec/nm-dhcp-helper -pf /var/run/dhclient-enp1s0f0.pid -lf /var/lib/NetworkManager/dhclient-1222c7d9-3b41-4420-8488-92ba1fedf6ad-enp1s0f0.lease -cf /var/lib/NetworkManager/dhclient-enp1s0f0.conf enp1s0f0
0 S root 17569 11884 0 80 0 - 28166 pipe_w 01:41 pts/1 00:00:00 grep --color=auto dhcp

[root@prop-idm ~]# vim /var/lib/NetworkManager/dhclient-1222c7d9-3b41-4420-8488-92ba1fedf6ad-enp1s0f0.lease

lease {
interface "enp1s0f0";
fixed-address 10.236.114.210;
option wpad "http://autocache.entsvcs.net";
option subnet-mask 255.255.255.0;
option routers 10.236.114.1;
option dhcp-lease-time 43200;
option dhcp-message-type 5;
option domain-name-servers 15.128.128.54,15.128.128.53;
option dhcp-server-identifier 20.198.64.36;
option ntp-servers 15.128.128.123;
option broadcast-address 10.236.114.255;
option domain-name "apj.dxccorp.net";
renew 5 2019/03/29 05:09:13;
rebind 5 2019/03/29 10:52:49;
expire 5 2019/03/29 12:22:49;
}

2. nslookup命令常用域名查询工具，就是查DNS信息用的命令。

[root@prop-idm ~]# nslookup prop-idm.dxctech.tk
Server: 15.128.128.54
Address: 15.128.128.54#53

Non-authoritative answer:
Name: prop-idm.dxctech.tk
Address: 10.236.114.210

other：

ip route change default via 10.0.2.2 dev enp0s3
ip route
tracepath 8.8.8.8
tracepath -n 8.8.8.8
ip a
ps -ef | grep dhcp
less /var/lib/dhcp/dhclient.enp0s3.leases
less /var/lib/dhcp/dhclient.enp0s8.leases
ps -ef | grep dhcp