平台信息： ubuntu 18.04
ifconfig效果：
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536inet 127.0.0.1 netmask 255.0.0.0inet6 ::1 prefixlen 128 scopeid 0x10<host>loop txqueuelen 1000 (Local Loopback)RX packets 280 bytes 20667 (20.6 KB)RX errors 0 dropped 0 overruns 0 frame 0TX packets 280 bytes 20667 (20.6 KB)TX errors 0 dropped 0 overruns 0 carrier 0 collisions 01、查看具体信息
lshw -C networkWARNING: you should run this program as super-user.*-network:0 DISABLED description: Ethernet interfaceproduct: 82545EM Gigabit Ethernet Controller (Copper)vendor: Intel Corporationphysical id: 1bus info: pci@0000:02:01.0logical name: eth0version: 01serial: 00:0c:29:92:d1:71size: 1Gbit/scapacity: 1Gbit/swidth: 64 bitsclock: 66MHzcapabilities: bus_master cap_list rom ethernet physical logical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiationconfiguration: autonegotiation=on broadcast=yes driver=e1000 driverversion=7.3.21-k8-NAPI duplex=full latency=0 link=no mingnt=255 multicast=yes port=twisted pair speed=1Gbit/sresources: irq:19 memory:fd5c0000-fd5dffff memory:fdff0000-fdffffff ioport:2000(size=64) memory:fd500000-fd50ffff*-network:1 DISABLEDdescription: Ethernet interfaceproduct: 82545EM Gigabit Ethernet Controller (Copper)vendor: Intel Corporationphysical id: 6bus info: pci@0000:02:06.0logical name: eth1version: 01serial: 00:0c:29:92:d1:7bsize: 1Gbit/scapacity: 1Gbit/swidth: 64 bitsclock: 66MHzcapabilities: bus_master cap_list rom ethernet physical logical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiationconfiguration: autonegotiation=on broadcast=yes driver=e1000 driverversion=7.3.21-k8-NAPI duplex=full latency=0 link=no mingnt=255 multicast=yes port=twisted pair speed=1Gbit/sresources: irq:16 memory:fd580000-fd59ffff memory:fdfe0000-fdfeffff ioport:2080(size=64) memory:fd520000-fd52ffff
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.注意：*-network:0 DISABLED
2、解决方法
sudo service network-manager stopsudo rm /var/lib/NetworkManager/NetworkManager.statesudo service network-manager start
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