Re: ifconfig dummy device

[Nathan Binkert <binkertn@umich.edu>]

Ok, obviously, I wasn't reading the original entirely correctly.  Usually
in linux when you do something like:

device0:0 in an ifconfig, that means you're doing an alias. You can assign
multiple addresses to a loopback device.

I'm not sure exactly what the dummy device does in linux.  Does it just
set up a tunnel with different IPs at each endpoint?

  Nathan


> I think he wants to assign multiple IP addresses to one interface.  To do
> so, you must use the alias option in ifconfig.
> 
> see ifconfig(8) and look at the alias option.  (Basically all you have to
> do is do the same sort of ifconfig as normal and tack alias onto the end.
> 
>   Nathan
> 
> 
> > no i don't understand your point...
> > configure lo1 as you like, and use it as if it was real device...
> > you can run 'tcpdump -i lo1', you can run pings, telnets on it...
> > or it's wrong statement?
> > 
> > On Fri, Mar 24, 2000 at 10:52:41AM -0500, K Adam Guyot wrote:
> > > The loopback devices will always show as coming from localhost. Even lo1
> > > unless I am horribly mistaken.
> > > I would like to run tcpdump on one adress and from the other run eg.
> > > ping, telnet etc. and have tcpdump show as coming from the other device.
> > > What am I overlooking here?
> > > --a
> > > 
> > > PS. Is my question clear enough or do I need to explain more?
> > 
> > -- 
> > Denis A. Doroshenko
> > Omnitel Ltd., Sevcenkos 25, Vilnius 2600, Lithuania
> > mailto:d.doroshenko@omnitel.net
> > 
>