How to configure port forwarding rules on Mikrotik with ovpn-server?

Question

Mikrotik

Hello.
Mikrotik is an open vpn server.
Only one client connects to openvpn at all times.
It is necessary that every time Mikrotik is loaded, port forwarding rules with the correct interface name are raised. Now, after rebooting, it turns out like this and port forwarding does not work:

/ip firewall natt
add action=dst-nat chain=dstnat in-interface="(unknown)" port=37777 \
  protocol=tcp to-addresses=192.168.49.199 to-ports=37777

Answer 1

I solved the problem myself by statically naming the ovpn connection:

/interface ovpn-server
add name=ovpn1 user=user1

and specifying the interface name ovpn1