Traefik don't keep real ip - docker

Question

I have a problem with Traefik, I want to log from a server with syslog-ng (docker).
I have logs but I have reverse_proxy name and I want source IP not the name of traefik. I wish to keep source IP from the host.
traefik.yml :
global:
sendAnonymousUsage: false
api:
dashboard: true
insecure: true
providers:
docker:
endpoint: "unix:///var/run/docker.sock"
watch: true
useBindPortIP: true
exposedByDefault: false
file:
filename: /etc/traefik/config.yml
watch: true
log:
level: INFO
format: common
entryPoints:
http:
address: ":80"
http:
redirections:
entryPoint:
to: https
scheme: https
https:
address: ":443"
udp:
address: ":514/udp"
tcp:
address: ":514"
udp:
services:
syslog-ng:
loadBalancer:
servers:
- address: ":514/udp"
tcp:
services:
syslog-ng:
loadBalancer:
servers:
- address: ":514"
forwardedHeaders: true
certificatesResolvers:
le:
acme:
email: responsable.informatique#exemple.com
storage: acme.json
httpChallenge:
# used during the challenge
entryPoint: http
syslog-ng.conf:
# rsyslog configuration file
# For more information see /usr/share/doc/rsyslog-*/rsyslog_conf.html
# If you experience problems, see http://www.rsyslog.com/doc/troubleshoot.html
#### MODULES ####
# The imjournal module bellow is now used as a message source instead of imuxsock.
$ModLoad imuxsock # provides support for local system logging (e.g. via logger command)
$ModLoad imjournal # provides access to the systemd journal
#$ModLoad imklog # reads kernel messages (the same are read from journald)
#$ModLoad immark # provides --MARK-- message capability
# Provides UDP syslog reception
#$ModLoad imudp
#$InputUDPServerRun 514
#$UDPServerRun 514
# Provides TCP syslog reception
#$ModLoad imtcp
#$InputTCPServerRun 514
#### GLOBAL DIRECTIVES ####
# Where to place auxiliary files
$WorkDirectory /var/lib/rsyslog
# Use default timestamp format
$ActionFileDefaultTemplate RSYSLOG_TraditionalFileFormat
# File syncing capability is disabled by default. This feature is usually not required,
# not useful and an extreme performance hit
$ActionFileEnableSync on
# Include all config files in /etc/rsyslog.d/
$IncludeConfig /etc/rsyslog.d/*.conf
#*.* #lysca-app0037.ds-001.net
*.* ##10.84.50.186
#*.* action(type=omfwd" target="10.84.50.186" port="601" protocol="tcp"
# action.resumeRetryCount ="100"
# queue.type="linkedList" queue.size="10000")
# Turn off message reception via local log socket;
# local messages are retrieved through imjournal now.
$OmitLocalLogging on
# File to store the position in the journal
$IMJournalStateFile imjournal.state
#### RULES ####
# Log all kernel messages to the console.
# Logging much else clutters up the screen.
#kern.* /dev/console
# Log anything (except mail) of level info or higher.
# Don't log private authentication messages!
*.info;mail.none;authpriv.none;cron.none /var/log/messages
# The authpriv file has restricted access.
authpriv.* /var/log/secure
# Log all the mail messages in one place.
mail.* -/var/log/maillog
# Log cron stuff
cron.* /var/log/cron
# Everybody gets emergency messages
*.emerg :omusrmsg:*
# Save news errors of level crit and higher in a special file.
uucp,news.crit /var/log/spooler
# Save boot messages also to boot.log
local7.* /var/log/boot.log
# ### begin forwarding rule ###
# The statement between the begin ... end define a SINGLE forwarding
# rule. They belong together, do NOT split them. If you create multiple
# forwarding rules, duplicate the whole block!
# Remote Logging (we use TCP for reliable delivery)
#
# An on-disk queue is created for this action. If the remote host is
# down, messages are spooled to disk and sent when it is up again.
#$ActionQueueFileName fwdRule1 # unique name prefix for spool files
#$ActionQueueMaxDiskSpace 1g # 1gb space limit (use as much as possible)
#$ActionQueueSaveOnShutdown on # save messages to disk on shutdown
#$ActionQueueType LinkedList # run asynchronously
#$ActionResumeRetryCount -1 # infinite retries if host is down
# remote host is: name/ip:port, e.g. 192.168.0.1:514, port optional
#*.* ##remote-host:514
# ### end of the forwarding rule ###
It's like NAT reverse but I don't know here I can find the configuration in traefik.
Thank for read me
Regards