Re: different networks, same computer (map mapping ?)

["H. S." <greatexcalibur@yahoo.com>]

Apparently, _John Schmidt_, on 01/11/04 19:48,typed:
> I have a similar setup.  I used ifplugd and guessnet.  You have to modify 
> slightly /etc/network/interfaces.  I supposed you don't need ifplugd, but it 
> is nice to be able to start up my laptop quickly without having any type of 
> network cable installed.  Once you plug a cable in, ifplugd will configure 
> things for you. 
>
> Anyway, here are some snippets from my /etc/network/interfaces file:
>
> # The primary network interface
> # turn off since ifplugd is controlling things
> #auto eth0
>
> mapping eth0
>         script /usr/sbin/guessnet-ifupdown
>         map default: none
>         map timeout: 3
>         map verbose: true
>
> iface work inet dhcp
>         test-peer address x.x.x.x MAC.address
>
> iface home inet static
>         address 192.168.1.5
>         netmask 255.255.255.0
>         network 192.168.1.0
>         broadcast 192.168.1.255
>         gateway 192.168.1.1
>         test-peer address 192.168.1.1 MAC.address
>
> Note:  
>
> x.x.x.x is the IP address of a known computer on the network that should be 
> always there.  The MAC.address is the hardware MAC address of this computer.
>
> Pretty simple setup but works nicely.
>
> John

I installed ifplugd and guess-net. My ifplugd config is:
#----------------------------------------------------------
{~}> cat /etc/default/ifplugd
# This file may be changed either manually or by running dpkg-reconfigure.
#
# N.B.: dpkg-reconfigure deletes everything from this file except for
# the assignments to variables INTERFACES, HOTPLUG_INTERFACES, ARGS and
# SUSPEND_ACTION.  When run it uses the current values of those variables
# as their default values, thus preserving the administrator's changes.
INTERFACES="eth0"
HOTPLUG_INTERFACES=""
ARGS="-q -f -u0 -d5 -w -I"
SUSPEND_ACTION="stop"
#----------------------------------------------------------


and my interfaces file is:

#----------------------------------------------------------
{~}> cat /etc/network/interfaces
# 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

#mapping
mapping eth0
        script /usr/sbin/guessnet-ifupdown
#       map home work
        map default: none
        map timeout: 3
        map verbose: true

#home network
iface home inet dhcp
        test-peer address 192.168.0.2 source 192.168.0.15


#university network
iface work inet static
        address X.Y.Z.A
        netmask 255.255.255.0
        gateway X.Y.Z.1
        network X.Y.Z.0
        broadcast X.Y.Z.255
        dns-nameservers a.b.c.d e.f.g.h
        test-peer address a.b.c.d source X.Y.Z.A
#----------------------------------------------------------

This setup doesn't work. The boot process hangs just after the "starting 
MTA: Exim" message. But I choose the interfaces file so that eth0 is 
configured at dhcp in my home, the boot process works and a few messages 
after "starting MTA: exim" it also gives the message  "network 
interfaces plugging demon".

Could you give more information about your interfaces file and ifplugd 
config.? I seem to be missing something very basic here.

thanks,
->HS