Point-to-point connection between jails?

[Nikos Vassiliadis]

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?
Did I misunderstand your question?

Nikos