From: "Michael MacLeod" <mikemacleod at gmail dot com>

> Whenever I change the WAN interface settings for m0n0wall, the LAN 
> interface
> becomes unreponsive. I uncovered this recently when changing from DHCP to
> PPPoE because my cable connection had gone down, but I also have a DSL
> connection. Immediately after hitting the save button, the LAN interface
> becomes completely unresponsive. I was able to determine that the changes
> are successfully applied to the WAN interface properly, and the WAN
> interface is perfectly responsive after hitting the save button. The only
> way to regain the LAN interface is to reboot the machine from the console.
> When the system comes back up, the WAN interface changes are there (but we
> knew that already, as it works even when the LAN interface doesn't), and 
> the
> LAN interface works great, until the internet connection goes down again 
> and
> I have to make another adjustment...

> Background:
> build: generic-pc 1.22 and 1.23b1 tested, problem persists in both
> cpu: PII400
> mem: 64megs (never seen it over 40% used)
> image installed on hard disk, as is config file.

> LAN -> vr0 ( 192.168.1.1)
> WAN -> ed0

> ISP1: Rogers Extreme Internet
> ISP2: Bell High Speed DSL (dry loop)

> Any suggestions?

Flip the cards.  Make LAN ed0 and WAN vr0 and see if the problem "moves." 
Some cards can be flaky.

                                Lee