Bandwidthd with PostgreSQL [logging double the traffic]

[kittler]

The amount of traffic that I see from 2 PFsense (2 sensors) is exactly the double that I'm mesuring.
On phppgadmin seems that I'm indeed getting the double of the necessary information:

This is my sensor 1 on PFSense (same for sensor 2, just another sensor name):

# the package manager resyncs.
#
####################################################
# Bandwidthd.conf
#
# Commented out options are here to provide
# documentation and represent defaults

# Subnets to collect statistics on. Traffic that
# matches none of these subnets will be ignored.
# Syntax is either IP Subnet Mask or CIDR
subnet 192.168.1.0/24

# Device to listen on
# Bandwidthd listens on the first device it detects
# by default. Run "bandwidthd -l" for a list of
# devices.
dev "hn1"

###################################################
# Options that don't usually get changed

# An interval is 2.5 minutes, this is how many
# intervals to skip before doing a graphing run

# Graph cutoff is how many k must be transferred by an
# ip before we bother to graph it

#Put interface in promiscuous mode to score to traffic
#that may not be routing through the host machine.
promiscuous false

#Log data to cdf file htdocs/log.cdf

#Read back the cdf file on startup

# Standard postgres connect string, just like php, see postgres docs for
# details
pgsql_connect_string "user = postgres dbname = band password = xx host = 192.168.1.128"

# Arbitrary sensor name, I recommend the sensors fully qualified domain
# name
sensor_id "VPN"

#Libpcap format filter string used to control what bandwidthd sees
#Please always include "ip" in the string to avoid strange problems

#Draw Graphs - This defaults to true to graph the traffic bandwidthd is recording
#Usually set this to false if you only want cdf output or
#you are using the database output option. Bandwidthd will use very little
#ram and cpu if this is set to false.
graph false

#Set META REFRESH seconds (default 150, use 0 to disable).

Using PFSense 2.2.3.
But just did a clean install of 2.2.5 with nothing but Bandwidthd and still get the same double amount of log.

PS: today a generated cdf files, and it seems to be doubled too: