Point-to-point connection between jails?

[Julian Elischer]

On 5/28/12 7:14 AM, Darren Reed wrote:
> 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.

what you want is epair  which is a pseudo driver pair,
specifically designed to connect two vimage jails to each other.

> Darren
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