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Re: Patches to allow running multiple vmware3 instances - FreeBSD

This is a discussion on Re: Patches to allow running multiple vmware3 instances - FreeBSD ; Ah. Aparently I don't understand netmasks well enough. ;-) I missed that they were on different subnets. That resolves my issue! Now I can do some network programming. Sean On Thu, Jul 01, 2004 at 03:23:43PM +0200, Per Hedeland wrote: ...


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Old 07-01-2004, 01:52 PM
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Default Re: Patches to allow running multiple vmware3 instances
Ah. Aparently I don't understand netmasks well enough. ;-) I
missed that they were on different subnets.

That resolves my issue! Now I can do some network programming.

Sean

On Thu, Jul 01, 2004 at 03:23:43PM +0200, Per Hedeland wrote:
> Sean Welch wrote:
> >
> >I added in your patches and recompiled. I do indeed get multiple
> >vmnet interfaces but I don't seem able to configure them as you show
> >in your example. Specifically, I cannot configure the interfaces to
> >be on the same subnet with the same netmask.
>
> That's right - FreeBSD doesn't allow this AFAIK (it doesn't "make sense"
> from a routing perspective). So that's a limitation that follows from
> the use of one vmnet interface per vmware instance: Each vmware instance
> must be in its own subnet. Unless you use bridged mode, of course...
>
> > Your example file suggests you used this
> >(snip):
> >
> >vmnet1.Bridged = "NO"
> >vmnet1.BridgeInterface = ""
> >vmnet1.HostOnlyAddress = "172.31.254.1"
> >vmnet1.HostOnlyNetMask = "255.255.255.240"
> >vmnet2.Bridged = "NO"
> >vmnet2.BridgeInterface = ""
> >vmnet2.HostOnlyAddress = "172.31.254.17"
> >vmnet2.HostOnlyNetMask = "255.255.255.240"
>
> Yes - note that those are two different subnets, .1-.15 and .17-.31,
> given the netmask.
>
> >My config file looks like this:
> >
> >vmware.fullpath = "/usr/local/lib/vmware/bin/vmware"
> >wizard.fullpath = "/usr/local/lib/vmware/bin/vmware-wizard"
> >dhcpd.fullpath = "/usr/local/lib/vmware/bin/vmnet-dhcpd"
> >loop.fullpath = "/usr/local/lib/vmware/bin/vmware-loop"
> >libdir = "/usr/local/lib/vmware"
> >vmnet1.Bridged = "NO"
> >vmnet1.BridgeInterface = ""
> >vmnet1.HostOnlyAddress = "172.19.20.40"
> >vmnet1.HostOnlyNetMask = "255.255.255.0"
> >vmnet2.Bridged = "NO"
> >vmnet2.BridgeInterface = ""
> >vmnet2.HostOnlyAddress = "172.19.20.41"
> >vmnet2.HostOnlyNetMask = "255.255.255.0"
>
> And that won't work. As to why, lets say that your vmware instance has
> the IP address 172.19.20.42 - how can the FreeBSD stack know whether
> packets for it should be sent via the vmnet1 or the vmnet2 interface?
> So it's simply not allowed - the interface configs are considered
> conflicting.
>
> --Per Hedeland
> per@hedeland.org
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