[ih] History question -- multi-homing

[John Day]

Yes, that is the correct solution. 

It is what CYCLADES did.

> On Sep 12, 2026, at 02:04, Tony Li <tony.li at tony.li> wrote:
> 
>>>> Destinations are not the issue, sources are.
>>> 
>>> Not really.  They are all addressed to the same address, the destination.
>> 
>> They are because when I change interfaces on current hosts, the host’s source address changes. That’s breaks all sorts of things (or requires the gymnastics of MP-TCP, e.g.).
>> 
>> If you recognize that having two paths to the rest of the world means a router, all that mess goes away.
>> 
>> We implemented that when we double-homed hosts throughout DIv7 on both Ethernet and Myrinet - that’s what the 1997 paper describes.
> 
> 
> If you recognize that hosts need addresses, then the problem also goes away.
> 
> Tony
>