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Re: [lwip-devel] Bridge Implementation

From: Joel Cunningham
Subject: Re: [lwip-devel] Bridge Implementation
Date: Fri, 10 Feb 2017 10:48:20 -0600

> On Feb 10, 2017, at 9:15 AM, Sylvain Rochet <address@hidden> wrote:
> Hi Joel,
> On Fri, Feb 10, 2017 at 09:02:05AM -0600, Joel Cunningham wrote:
>> Agree that the bulk of the bridge implementation would probably be 
>> some kind of virtual netif, but the one piece that I need to 
>> think/learn more about is how ARPing for the bridge’s IP address works 
>> because there is a different hardware address for each interface
> They are not really used. An Ethernet switch (a bridge) doesn't have a 
> mac address per se, or only one for its administrative interface over a 
> virtual IP interface. Some bridge implementation use either a randomly 
> generated one or the one of the first added interface.

I like the approach of a virtual port with it’s own MAC, that makes things 

> It means we need a layer 2 router implementation (an Ethernet switch) 
> below everything else with virtual Ethernet interface support if we want
> more than just a bridge.


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