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ubuntu network configuration

Guide

network proxy

• System wide: Network--->None/Manual
• chrome: can not set
• firefox: about:preferences---> Network Proxy

eth0 config

rename xxx to eth0

errors may occur:

Ubuntu networking restart | cannot find device 'eth0'

check eth0

$ dmesg | grep eth 

[5.715564] e1000 0000:02:01.0 eth0: (PCI:66MHz:32-bit) 00:0c:29:7d:bf:43
[5.715573] e1000 0000:02:01.0 eth0: Intel(R) PRO/1000 Network Connection
[5.719709] e1000 0000:02:01.0 ens33: renamed from eth0

and we get ens33 renamed from eth0, we need to change it back to eth0.

solution

(1). edit grub and update

$ sudo vim /etc/default/grub

#GRUB_CMDLINE_LINUX=""
GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0"

$ sudo update-grub

(2) edit network interfaces

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
address 192.168.1.77 
netmask 255.255.255.0
gateway 192.168.1.1 

(3) reboot

sudo reboot now

(4) check eth0

$ sudo ifconfig

eth0      Link encap:Ethernet  HWaddr 80:fa:5b:47:92:8a  
          inet addr:192.168.1.77  Bcast:192.168.1.255  Mask:255.255.255.0
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:4640 errors:0 dropped:0 overruns:0 frame:0
          TX packets:4640 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:865530 (865.5 KB)  TX bytes:865530 (865.5 KB)

wlan0     Link encap:Ethernet  HWaddr b0:35:9f:53:68:c6  
          inet addr:192.168.0.130  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::a3d7:e190:6fb3:133/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:6536 errors:0 dropped:0 overruns:0 frame:0
          TX packets:380 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:581427 (581.4 KB)  TX bytes:46439 (46.4 KB)

OK. Now we get eth0,wlan0 properly set.

Reference

• ubuntu rename eth0

History

• 20180108: created
• 20180222: add eth0 part.

Copyright

• Post author: kezunlin
• Post link: https://kezunlin.me/post/5076bc45/
• Copyright Notice: All articles in this blog are licensed under CC BY-NC-SA 3.0 unless stating additionally.