Disable roaming for new WWAN connection

[richter ecos de]

Hi,

when I add a new mobile broadband connection, roaming is enabled by default. Could this default be changed somehow (most people like to disable roaming by default, because it's very expensive, at least in Europe).

If there is no simple way to change this, could somebody tell me which is the right place to patch network manager to change this default?

Thanks & Regards

Gerald