PF pfSense - multiple OpenVPN Clients for Load Balancing

Hello.

I'm trying to configure multiple OpenVPN clients with the interface localhost and stunnel package at VPN provider perfect privacy.
With the multiple clients I want to use load balancing. Everything works well with one client, but with multiple clients, they always crash.

I use 4 x following configuration:

Code:
browse "VPN: OpenVPN: Client"
Protocol: TCP
Interface: Localhost
Server host or address: 127.0.0.1
Server port: 995
Advanced:
       route Server_IP 255.255.255.255 net_gateway

And then 1 x stunnel configuration:

STunnel.PNG


I have the following error Messages.

System-> General Log:
Code:
/rc.newwanip: The command '/usr/local/sbin/unbound -c /var/unbound/unbound.conf' returned exit code '1', the output was '[1547574979] unbound[12781:0] error: can't bind socket: Address already in use for 127.0.0.1 port 953 [1547574979] unbound[12781:0] error: cannot open control interface 127.0.0.1 953 [1547574979] unbound[12781:0] fatal error: could not open ports'

Maybe someone can help.
 
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