a silly question, in a dual wan system (WAN e OPT1) who is the default gateway?
is by default the WAN's gateway or there's a special setting for the gateway?
The default gateway of the WAN.
The loadbalancing/failover doesn't follow the routing table, but the pools you create.
Thus the pfSense itself cannot make use of failover/loadbalance because it only follows the routingtable.