[转】Ubuntu16.04 字符界面 ifconfig 命令无网络接口 ens33 的解决方法

最新推荐文章于 2023-12-05 11:39:16 发布

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最新推荐文章于 2023-12-05 11:39:16 发布

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原文链接：http://www.cnblogs.com/ybluo/p/10989929.html

本文详细记录了在Ubuntu系统中遇到的网络接口未激活问题及其解决方案。通过使用sudo dhclient命令，成功激活了ens33网络接口，并配置了正确的IP地址、子网掩码和广播地址。此外，还展示了如何查看网络接口状态，包括MTU设置、IP和IPv6地址、MAC地址以及收发数据包的统计信息。

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@ubuntu:~$ ifconfig
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 591 bytes 37975 (37.9 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 591 bytes 37975 (37.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lxcbr0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
inet 10.0.3.1 netmask 255.255.255.0 broadcast 0.0.0.0
ether 00:16:3e:00:00:00 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

其实不是接口不存在，只是接口没有UP

l@ubuntu:~$ ifconfig -a
ens33: flags=4098<BROADCAST,MULTICAST> mtu 1500
ether 00:0c:29:60:ac:56 txqueuelen 1000 (Ethernet)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2253 bytes 141605 (141.6 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2253 bytes 141605 (141.6 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

解决办法：

sudo dhclient

@ubuntu:~$ ifconfig
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.242.131 netmask 255.255.255.0 broadcast 192.168.242.255
inet6 fe80::20c:29ff:fe60:ac56 prefixlen 64 scopeid 0x20<link>
ether 00:0c:29:60:ac:56 txqueuelen 1000 (Ethernet)
RX packets 6341 bytes 8528561 (8.5 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2153 bytes 164046 (164.0 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 2729 bytes 172609 (172.6 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2729 bytes 172609 (172.6 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

转载于:https://www.cnblogs.com/ybluo/p/10989929.html