Debian 配置网络

查看网络名称

ip addr

或

ls /sys/class/net/

结果

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
  link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
  inet 127.0.0.1/8 scope host lo
     valid_lft forever preferred_lft forever
  inet6 ::1/128 scope host
     valid_lft forever preferred_lft forever
2: ens7: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
  link/ether 56:6f:97:a2:00:0a brd ff:ff:ff:ff:ff:ff
  altname enp0s7
  inet 192.168.56.159/24 brd 192.168.56.255 scope global ens7
     valid_lft forever preferred_lft forever
  inet6 fdc5:d60e:2656:0:546f:97ff:fea2:a/64 scope global dynamic mngtmpaddr
     valid_lft forever preferred_lft forever
  inet6 fe80::546f:97ff:fea2:a/64 scope link
     valid_lft forever preferred_lft forever

手动设置IP上网，在底部添加

vi /etc/network/interfaces

写入如下配置

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
allow-hotplug ens7
iface ens7 inet static
        address 192.168.56.159
        netmask 255.255.255.0
        gateway 192.168.56.1
        # dns-* options are implemented by the resolvconf package, if installed
        dns-nameservers 192.168.57.6 218.2.2.2

指定网卡重启
停用网卡
```
ifdown ens7
```
启用网卡
```
ifup ens7
```
网络重启
```
systemctl restart networking
```