My goal is to build a redundant pfSense cluster (as described in this article : http://doc.pfsense.org/index.php/Configuring_pfSense_Hardware_Redundancy_(CARP)
The problem is that i only have 2 physical network interfaces on the server and the tutorial suggests to have 3 and dedicated one for the intra-cluster replication (interface SYNC).
I tried the trick of assigning a different IP to one of the interfaces and assign it to a different VLAN.
But when i try
vconfig add eth1:0 3
ERROR: trying to add VLAN #3 to IF -:eth1:0:- error: Invalid argument
Do you have any idea if this would be possible ? I can't really add a network card on the system; all my slots are full.