Please help make network configuration "stick" on re-boot.

GTrax · 09-30-2014, 04:49 PM

The system is LinuxMint 17.
The network can be made to work OK, but it fails to be there on start-up.
I have already learned to remove the crazy re-spawning "Network Manager" that repeatedly tries to connect to anything it finds.
I have already found /etc/network/interfaces.txt.
I have put there exactly what I need.

Code:

# interfaces(5) file used by ifup(8) and ifdown(8)
auto lo
iface lo inet loopback

iface eth1 inet static
address 192.168.0.<my_chosen_number_here>
netmask 255.255.255.0
network 192.168.0.0
broadcast 192.168.0.255
gateway 192.168.0.1
dns-nameservers 208.67.222.222

# auto eth1

That last "auto eth1" that I disabled by making it into a comment is always automatically written into this file on start-up, but is apparently trumped by the following command, delivered from a root terminal.

Code:

# ifup eth1

The network is then started up as needed, and it works just fine!
As it happens, there are two network ports, and eth0 is the one without the cable.
The questions..
1) Where is the proper place to put the "ifup eth1" command so that the network will be started correctly when we switch on?
2) Will there be a never-ending series of "auto eth1" repeatedly added to /etc/network/interfaces? If so, how do we prevent it?
My thanks if you can help.

jebe88 · 10-01-2014, 02:51 AM

The line reading "auto eth1" which you disabled should bring up the interface during boot without the need to explicitely doing an "ifup eth1". The "ifup" script is called with the option "-a" during boot which makes it parse /etc/network/interfaces and bring up everything marked as "auto" for you. If this still doesn't work, try to add a line with "allow-hotplug eth1". For further information use "man 5 interfaces".

GTrax · 10-01-2014, 04:06 AM

My thanks to you jebe88

Quote:

Originally Posted by jebe88

The line reading "auto eth1" which you disabled should bring up the interface during boot without the need to explicitely doing an "ifup eth1". The "ifup" script is called with the option "-a" during boot which makes it parse /etc/network/interfaces and bring up everything marked as "auto" for you. If this still doesn't work, try to add a line with "allow-hotplug eth1". For further information use "man 5 interfaces".

The motivation for disabling the "auto eth1" was I was still without network after re-start (this took a lot of tedious re-starts to test), and it was the only line left doing things I did not understand. At one stage, I noticed a "new" auto eth1 had appeared after the one commented out.

OK - so I re-enable the line, and read more manual.
My regards..