>Jan Engelhardt wrote:
>> On Thursday 2008-07-03 20:28, H. Peter Anvin wrote:
>>> Jens-Michael Hoffmann wrote:
>>>> hi,
>>>>
>>>> what is the right way to implement a "connect on demand" feature?
>>>> Example: user types url in firefox and presses return. Then
>>>> the system should set up network devices and proceed as usual.
>>>>
>>>> Is there a hook in the kernel we can use?
>>> In the kernel, no. Nor do you need one; the best place to hook into this is
>>> probably the name service system (so you catch it on trying to look up
>>> hostnames.)
>>>
>>> Alternatively, you can set up a bridge device which you can listen to via a tap
>>> device; when you see traffic, you bring up the real network and attach it to
>>> the bridge.
>>
>> There is on-demand for PPP devices; though that is probably specific
>> to PPP.
> Yes, those monitor traffic at the PPP device port, I believe.
thanks for the help guys, that looks like what we are looking for.
Best regards
Jens-Michael Hoffmann