How to connect internet automatically during startup?

[luofeiyu]

The os recognize my ethernet device as `enp6s0`.

ifconfig -a
enp6s0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.31.22 netmask 255.255.255.0 broadcast 192.168.31.255

My home network structure:

isp ---- moden ---- router ---- pc

I had already binding my pc mac address with `192.168.31.22` in router setting,router ip locates `192.168.31.1`.
Everytime i boot pc ,it can't connect the internet automatically,i have click connect button on wcid network manager gui.

It is no use to set the `/etc/network/interfaces` as below:

Setting as static ip.

auto lo
iface lo inet loopback
auto enp6s0
iface enp6s0 inet static
address 192.168.31.22
netmask 255.255.255.0
gateway 192.168.31.1
dns-nameservers 192.168.31.1

setting as dhcp.

auto lo
iface lo inet loopback
auto enp6s0
iface enp6s0 inet dhcp

 

[Condobloke]

g'day, Welcome toLinux.org

Why do you use wicd as opposed to network manager ?

Wicd is a network connection manager that can manage wireless and wired interfaces, similar and an alternative to NetworkManager.Wicd is written in Python and GTK.Wicd can also run from the terminal in a curses interface, requiring no X server session or task panel

Does it connect normally via network manager?

And...seeing the crystal ball is not working today, what exactly is 'your os'....and any other details you may think pertinent.

 

[MatsuShimizu]

I assume that you are using Debian because you are posting in Debian subforum.
Run these commands:

sudo apt-get install inxi
inxi -Nni

Then, post the results from your terminal here.