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Re: dual-homed sourced out of lo?



Thus spake Bob Proulx (bob@proulx.com):

> Robert L. Harris wrote:
> >   We're working on a network-hardened solution and I've been picked to
> > figure out the solution to a problem.  In a week I'll have hardware to
> > play with but I'm trying to figure out the answer or a plan of attack
> > early.  Here's the setup:
> > 
> > Server had 2 interfaces with IP's:
> > eth0: 192.168.1.1
> > eth1: 192.168.2.1
> > lo: 192.168.0.1
> 
> I can't imagine what would break if lo isn't using 127.* loopback
> address but I imagine it would be quite a bit.  Do you have a purpose
> in not using 127.0.0.1 for the loopback device?  I am guessing this is
> a mistake here.

The 192.168.0.1 would be assigned to lo in addition to 127.0.0.1

> 
> > We want to have the machine listening on eth0 and eth1 when both
> > networks are up and functional to the OSPF broadcasts.  Oubound traffic
> > needs to come from the 192.168.0.1 (lo) address though so that return
> > traffic goes to 192.168.0.1, not the other subnets and the server accept
> > the packets for lo.
> > 
> > Has anyone set up something like this which is relatively easy to
> > duplicate with a stock Linux box and Zebra for the OSPF?
> 
> Perhaps I am very clueless but could you expand on just what you are
> trying to do here?  Of course I am not familiar with Zebra.  So if
> other people jump in with real answers please ignore me.

Redundant routes to these servers from the outside world basically.


:wq!
---------------------------------------------------------------------------
Robert L. Harris                     | GPG Key ID: E344DA3B
                                         @ x-hkp://pgp.mit.edu
DISCLAIMER:
      These are MY OPINIONS ALONE.  I speak for no-one else.

With Dreams To Be A King First One Should Be A Man
					- Manowar

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