netdev - Re: [RFC] updated Patch to option HSO driver to the kernel

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Date:	Tue, 22 Apr 2008 10:52:49 +0200
From:	Oliver Neukum <oliver@...kum.org>
To:	Paulius Zaleckas <paulius.zaleckas@...tonika.lt>
Cc:	netdev@...r.kernel.org, linux-usb@...r.kernel.org
Subject: Re: [RFC] updated Patch to option HSO driver to the kernel

Am Dienstag, 22. April 2008 00:04:11 schrieb Paulius Zaleckas:
> I would agree with you, but... To make this interface work you have to
> send AT command with APN and optionally with PAP/CHAP username and password.
> Then you call AT command witch initiates PPP with basestation and begins
> to send/receive traffic on this pseudo ethernet interface... Actually it
> still needs one more AT command to get your IP and DNS addresses.
> Then you do: ifconfig hso0 xxx.xxx.xxx.xxx netmask 255.255.255.255 up
> And then you have to write DNS addresses (got through AT interface) to
> the /etc/resolv.conf. Now you have a working internet connection!
> 
> So... I don't see any chance to do multicasting or broadcasting here...
> IMO the only way to distribute this kind of connection to local network
> is to do NAT'ing :( Am I wrong?

But what in this setup would prevent the other end of the connection
from sending packets to a multicast address down the link? If that
can happen, the questions remains, can the device filter these packets
in hardware?

	Regards
		Oliver

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