Try -A instead of -D before PREROUTING.
iptables -t nat -A PREROUTING -d '10.255.0.0/24' -j NETMAP --to '192.168.10.0/24'
Hi, thx this is now working!!!
I have an additional question at OpenVpn Client configuration.
I try to implement the settings like in the OpenVPN settings at the Windows-PC.
Connection will be reestablished every 50 seconds and I am NOT able to ping the VPN-server. On Windows-PC it works fine...
Here my configuration:
Thx for support!
If you're not able to ping, make sure: