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does NOT work for me
Authored by: Magnum on Nov 05, '02 01:34:22PM

Okay, I have done some testing and have not succeeded. I tried 5 different
machines, with or without airport, with different configurations - it
doesn't work anywhere. The only cause I can think of is the Internet
connection itself.
Are any of you using an Internet connection over LAN or are you using
PPPoE? All machines I tried use a LAN connection.
I would like to know if any of you have succeeded with this over a LAN
Internet connection.


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does NOT work for me
Authored by: cybergoober on Nov 08, '02 12:25:01PM

My desktop is connected to the LAN via ethernet. I connect to the Internet on my laptop via my desktop using this tip.

In the Network System Preferences pane I left my Ethernet settings as-is.
AirPort Settings same as ethernet except,
I changed the IP to

AirPort IP set to
All other IP settings are the same as the desktop.

Draw back.
On the laptop I can connect to machines on the LAN via IP or Hostname but cannot browse the LAN.

Perhaps I have something mis-configured, but broadcasting DHCP is unacceptable.

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Set up via System Prefs first?
Authored by: Jaharmi on Nov 09, '02 07:54:04AM

Have you set up Internet Sharing via System Prefs first? You can get around a lot of problems by just letting the system pref do its work. I have no idea where it installs its config files; I do know that starting the InternetSharing app from the command line works if you have set it up beforehand via System Prefs.

You should not need to assign any IP addresses to the interfaces you are configuring. InternetSharing handles this for you, and I don't know how to stop it from doing its automatic thing or customize what it does. Every attempt I've made makes duplicate interfaces that I see when I run ifconfig at the command line.

You will need at least two interfaces, and I'm sorry to tell you that there may not be a way to turn of DHCP. If you have Ethernet and AirPort, you can share your Ethernet-based Internet connection with AirPort users. (You could also share your Ethernet connection via Ethernet with other Ethernet-based computers -- there's a checkbox for that -- but I would say it's safer to have a second Ethernet card and share that instead.) You'll end up sharing any interfaces that don't host your primary Internet connection, in my experience.

I have been running this happily for weeks, since I struggled with my firewall/nat setup after upgrading to Jaguar. (I had previously customized my firewall in 10.1, and had to make some changes to get it to work in 10.2.)

If you are having problems, maybe it's because you haven't set up Internet Sharing via the GUI first ... ?

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Set up via System Prefs first?
Authored by: Magnum on Nov 12, '02 04:56:33AM

Sorry for not putting it clearly. I connect to the Internet through a LAN
on my Cube and I share this connection over an Airport to my iBook. Internet
Sharing works fine when I start it from the Pref Pane and before Jaguar gNAT
did the trick. I've tried all kinds of different sharing settings - InternetSharing won't start from the command line.
It's frustrating to read about it, when I can't get it to work on any Mac I


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