two interfaces one subnet

Patrick W. Gilmore patrick at
Mon May 11 15:34:05 CDT 2009

On May 11, 2009, at 4:29 PM, Chris Meidinger wrote:

> This is a pretty moronic question, but I've been searching RFC's on- 
> and-off for a couple of weeks and can't find an answer. So I'm  
> hoping someone here will know it offhand.
> I've been looking through RFC's trying to find a clear statement  
> that having two interfaces in the same subnet does not work, but  
> can't find it that statement anywhere.
> The OS in this case is Linux. I know it can be done with clever  
> routing and prioritization and such, but this has to do with vanilla  
> config, just setting up two interfaces in one network.
> I would be grateful for a pointer to such an RFC statement, assuming  
> it exists.

Why would an RFC prohibit this?

Most _implementations_ do, but as far as network "rules" in general it  
is a valid configuration.


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