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I had a wrong IPV4 network assigned to my VPN user. Fixed that and that solved the issue.

I am trying to setup OpenVpn with OpnSense 25.1.

I am able to connect but with no data transfer of any kind (from wireshark, I could only see ARP requests).

The OpenVpn GUI reports the following logs:

Sun Nov 30 09:21:54 2025 Note: --cipher is not set. OpenVPN versions before 2.5 defaulted to BF-CBC as fallback when cipher negotiation failed in this case. If you need this fallback please add '--data-ciphers-fallback BF-CBC' to your configuration and/or add BF-CBC to --data-ciphers.
Sun Nov 30 09:21:54 2025 OpenVPN 2.6.16 [git:v2.6.16/647b115111079fcf] Windows [SSL (OpenSSL)] [LZO] [LZ4] [PKCS11] [AEAD] [DCO] built on Nov 17 2025
Sun Nov 30 09:21:54 2025 Windows version 10.0 (Windows 10 or greater), amd64 executable
Sun Nov 30 09:21:54 2025 library versions: OpenSSL 3.6.0 1 Oct 2025, LZO 2.10
Sun Nov 30 09:21:54 2025 DCO version: 1.3.3
Sun Nov 30 09:21:56 2025 WARNING: No server certificate verification method has been enabled.  See http://openvpn.net/howto.html#mitm for more info.
Sun Nov 30 09:21:56 2025 TCP/UDP: Preserving recently used remote address: [AF_INET]10.110.100.74:1194
Sun Nov 30 09:21:56 2025 ovpn-dco device [OpenVPN Connect DCO Adapter] opened
Sun Nov 30 09:21:56 2025 TCPv4_CLIENT link local (bound): [AF_INET][undef]:0
Sun Nov 30 09:21:56 2025 TCPv4_CLIENT link remote: [AF_INET]10.110.100.74:1194
Sun Nov 30 09:21:56 2025 WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this
Sun Nov 30 09:21:56 2025 [xxxx-vpn] Peer Connection Initiated with [AF_INET]10.110.100.74:1194
Sun Nov 30 09:21:57 2025 IPv4 MTU set to 1500 on interface 10 using service
Sun Nov 30 09:21:57 2025 Warning: route gateway is not reachable on any active network adapters: 10.254.3.1
Sun Nov 30 09:21:57 2025 Warning: route gateway is not reachable on any active network adapters: 10.254.3.1
Sun Nov 30 09:21:57 2025 Warning: route gateway is not reachable on any active network adapters: 10.254.3.1
Sun Nov 30 09:21:57 2025 Warning: route gateway is not reachable on any active network adapters: 10.254.3.1
Sun Nov 30 09:21:57 2025 Warning: route gateway is not reachable on any active network adapters: 10.254.3.1
Sun Nov 30 09:21:57 2025 Initialization Sequence Completed
Sun Nov 30 09:21:57 2025 ERROR: Some routes were not successfully added. The connection may not function correctly


My VPN net is 10.254.3.0/24 and LAN on OpnSense is 10.254.0.0/24.

I do have an all allow firewall rule on the OpenVpn interface under Firewall/Rules.

No ping or data transfer, and when using OpenVpn Connect it keeps reconnecting every 40 second.