[TriLUG] Running a Virtual Network on a Laptop
andrew_perrin at unc.edu
Thu Feb 28 15:26:45 EST 2002
Not knowing the specifics of the application you're talking about, I'd
guess that it's looking for a connection on the IP address that was
assigned to eth0; not finding it, it blocks.
You could probably hack it by assigning the IP address to an alias to lo
(but I don't know for sure if this will work); the routine would have to
be something like:
ifconfig lo:1 <your regular IP address here>
However, the better way to handle it is to tell your app to talk to, and
listen on, the appropriate IP address, which for lo is 127.0.0.1 by
Andrew J Perrin - andrew_perrin at unc.edu - http://www.unc.edu/~aperrin
Assistant Professor of Sociology, U of North Carolina, Chapel Hill
269 Hamilton Hall, CB#3210, Chapel Hill, NC 27599-3210 USA
On Thu, 28 Feb 2002, Scott @ Home wrote:
> Hi Folks,
> I'd like to be able to run the client-server software my company is
> developing on a standalone laptop system. I believe the RedHat 7.2
> laptop has the resources necessary to run the server and client
> applications simultaneously.
> I've tried running them with the network disconnected ("ifdown eth0")
> and the applications all hang. I'd hoped that the loopback device (lo)
> would be sufficient for them to operate, but apparently there's
> something in the network service that becomes unavailable when I do
> this... They'll run but hang as soon as they try to connect to the
> server app, which appears to be running fine.
> I had someone tell me today that you could bring up a virtual network on
> Linux on a standalone machine and fool applications into thinking there
> was a running network. He said you could do this through IP Aliasing.
> The client-server applications I'm working with don't care whether their
> IP address is different, though. They just have to be on a networked
> system. I can make them all run on a single node on my LAN at home, for
> I'll admit that I don't know all the ins and outs of network
> functionality, and that's part of what's holding me back. Has anyone
> set up something like this on a laptop? Any suggestions/recommendations?
> Scott Chilcote
> TriLUG mailing list
More information about the TriLUG