From: "H. Peter Anvin" <hpa@zytor.com>
To: Jan Engelhardt <jengelh@medozas.de>
Cc: Jens-Michael Hoffmann <J.Hoffmann@option.com>,
linux-kernel@vger.kernel.org
Subject: Re: tcp/ip connect on demand
Date: Thu, 03 Jul 2008 12:15:48 -0700 [thread overview]
Message-ID: <486D2564.4030806@zytor.com> (raw)
In-Reply-To: <alpine.LNX.1.10.0807032106310.23294@fbirervta.pbzchgretzou.qr>
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.
-hpa
next prev parent reply other threads:[~2008-07-03 19:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-03 11:29 tcp/ip connect on demand Jens-Michael Hoffmann
2008-07-03 18:28 ` H. Peter Anvin
2008-07-03 19:07 ` Jan Engelhardt
2008-07-03 19:15 ` H. Peter Anvin [this message]
2008-07-04 11:04 ` AW: " Jens-Michael Hoffmann
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