[Simh] VMS/VDE: Almost there

[Mark Pizzolato - Info Comm]

On Monday, October 5, 2015 at 9:22 AM, Johnny Billquist wrote:
> On 2015-10-05 18:08, Mark Pizzolato - Info Comm wrote:
> > On Monday, October 5, 2015 at 8:58 AM, Jordi wrote:
> >>>>
> >>>> Johnny, VDE works at layer 2 and has no idea about IP addressing or
> >> routing.
> >>>
> >>> Right. But the point was that the VDE should be between just the
> >>> simh and
> >> the MAC, and not bridged with the WiFi. Sounds like it is bridged to
> >> the WiFi in this case…
> >>>
> >> Oh, you mean using the mac as a router (ip forwarding enabled). Then
> >> you are right and the mac itself would have to provide DHCP services to
> the “tap”
> >> interface where the virtual switch is accesible. TBH I’ve never tried
> >> this myself, and I’d advise to use static IP configurarion in the VMS side.
> >
> > Actually getting the 'mac as a router' to work would be far more
> complicated since router on the LAN would then need to know about the
> additional network that the mac was routing for.  Getting this to work would,
> at least, be complicated for a single router and never for the general case.
> 
> Nothing prevents you from letting the MAC do NAT in addition to the
> routing. :-)

Well with the user mode NAT that slirpvde provides the mac OS needn't know anything about any routing that is going on.

- Mark