hmmm, strange...
I did this, and then 'sudo /etc/init.d/networking restart'.
And everything seems in order. I nicely get an IP from my provider, the LAN is working...
Before i do anything else, i want to be sure that all settings are known everywhere.
So i rebooted the server.
But when i look nows, the /etc/network/interfaces is overwritten with the old stuff? The {extif} is back in place?
any idea how this come?