Re: laptop restart eth0 automatically on plugin or on awake like a desktop

[Mitchell Laks <mlaks@post.harvard.edu>]

I hope that

you all realize I am not replying to this correspondent, but rather following up the thread.

I am __not__ using dhcp. This is not a dhcp problem.

I use static IP addresses on all of my ethernet cabled networks. 
 
I have approximately 100 different debian machines in multiple locations. They all have 
auto etho in them. I usually install from an old script that writes /etc/network/interfaces.

Just this laptop still had allow-hotplug in it since it was a recent reinstall...

There would something wrong with allow-hotplug if it requires you to manually intervene to bring down and then up an interface
after you plug in and you are already configured for a static address (or dhcp for that matter) in /etc/network/interfaces. Or 
after a reawaken from hibernation.

I notice that I must do 
ifdown eth0 
then 
ifup eth0

ifup eth0 alone will not work. (weird?).

I now seem to  recall having a problem (perhaps this?) with allow-hotplug many years ago and I switched to auto eth0 at that time.

I have to  say that I dont know (and sadly no one here has told us) how this affects the system in /etc/network/interfaces. 
And what really differentiates the different directives.

What program brings up eth0 after I plug in with the auto eth0  directive.

For those who still want the information:

Here is a typical appearance of a /etc/network/interfaces file.

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# This is a list of hotpluggable network interfaces.
# They will be activated automatically by the hotplug subsystem.
#mapping eth0
#	 script grep
#	 map eth0

# The primary network interface
#allow-hotplug eth0
auto eth1
iface eth1 inet static
      address 192.168.10.151
      netmask 255.255.255.0
      network 192.168.10.0
      broadcast 192.168.10.255
      gateway 192.168.10.2



Mitchell