NetworkManager in Intrepid breaks my FreeRunner's Internet connection

[digger vermont]

On Sun, 2008-10-12 at 15:28 +0200, Jeffrey Ratcliffe wrote:
> I've just upgraded my Hardy desktop to Intrepid and now have network problems.
> 
> This is my /etc/network/interfaces
> 
> auto lo
> iface lo inet loopback
> 
> auto usb0
> iface usb0 inet static
>        address 192.168.0.200
>        netmask 255.255.255.0
>        network 192.168.0.0
>        up iptables -A POSTROUTING -t nat -j MASQUERADE -s 192.168.0.0/24 &
>        up echo 1 > /proc/sys/net/ipv4/ip_forward &
>        up iptables -P FORWARD ACCEPT &
>        down iptables -D POSTROUTING -t nat -j MASQUERADE -s 192.168.0.0/24 &
> 
> This worked fine with Hardy, but the desktop cannot see the network.
> 
> If I comment out auto usb0 and everything below, I can access the rest
> of the network, but then, of course, my FreeRunner no longer has
> Internet access.
> 
> Any ideas on how to get both up?
> 

Recently something changed with NetworkManager in Intrepid, don't know
what.  With the "auto usb0" line in the interfaces file NM decided that
it to make it the default route when I plugged it in.  I could see the
nm-applet going around and then a notification that I was connected to
the Freerunner.  Looking at connections with nm-applet there were tabs
for both the wireless and usb0 with usb0 marked as default. I kinda
remember an Ubuntu bug-report concerning the default route in NM.

Any way my solution was to comment out "auto usb0" and manually use
"ifup usb0" (actually "sudo ifdown usb0 && sudo ifup usb0" is what I
use).

digger
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