Point-to-point connection between jails?

[Darren Reed]

On 28/05/2012 11:45 PM, Nikos Vassiliadis wrote:
> On 5/28/2012 1:37 PM, Darren Reed wrote:
>> I've looked through the list of network interfaces that are
>> supported with FreeBSD and none seem to meet my needs. What
>> I want is a network interface that I can configure up in
>> jail A with address 10.1.1.1 and for which I can configure
>> a mate in jail B with the address 10.2.2.2 and use the
>> network interface as the means by which two jails can
>> directly communicate with each other without the need to
>> send any packets out of the machine. Or another way to do
>> this would be to have a virtual network (something like the
>> "internal network" that VirtualBox has or the host only
>> network supported by VMWware Workstation) defined somewhere
>> and for there to be a specific driver that could be
>> configured and attached to a jail and that virtual network
>> so that you could have N:M communication between jails.
>>
>> Is what I'm looking for already present and google is failing
>> me or is the above functionality the basis for future work,
>> be it planned or otherwise?
> 
> It seems like a loopback interface does this.
> 
> root at raidmadi:/home/nik # jls
>    JID  IP Address      Hostname                      Path
>      3  10.2.3.4                                      /
>      4  10.7.3.4                                      /
> root at raidmadi:/home/nik # ifconfig lo1
> lo1: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
>         options=3<RXCSUM,TXCSUM>
>         inet 10.2.3.4 netmask 0xff000000
>         inet 10.7.3.4 netmask 0xff000000
> root at raidmadi:/home/nik #
> 
> Maybe you want 'real' isolation? like with epair and VIMAGE?

Yes, I was after real isolation but this might work.

Darren