Dear all,
I have an ubuntu server where openvpn is installed and an OpenWrt Client. I can successfully connect from the client to the server. However, no tun0 interface is created automatically. If I manually add the required tun0 interface in the Webbrowser or /etc/config/network the tun0 interface is visible but no IP address is assigned to it. Furthermore, I see some errors when I try to connect from the client to the server like "vpn_gateway undefined". First I tried with an conf file where I used the same on a raspberry successfully before. I also modified the /etc/config/openvpn file and "translated" the settings from the conf file. Here are the configurations and outputs:
# Server
port 1196
proto udp
dev tun1
mode server
tls-server
ca /etc/openvpn/keys/ca+subca.pem
cert /etc/openvpn/keys/server.crt
key /etc/openvpn/keys/server.key # This file should be kept secret
dh /etc/openvpn/keys/dh2048.pem
ifconfig 10.2.0.1 10.2.0.2
push "route 192.168.0.0 255.255.255.0 vpn_gateway 5"
push "route 192.168.183.0 255.255.255.0 vpn_gateway 5"
push "route 192.168.1.0 255.255.255.0 vpn_gateway 10"
push "route 192.168.184.0 255.255.255.0 vpn_gateway 10"
push "route 10.0.0.0 255.255.255.0 vpn_gateway 5"
push "route 10.0.100.0 255.255.255.0 vpn_gateway 5"
push "route 10.0.1.0 255.255.255.0 vpn_gateway 10"
push "route 10.0.101.0 255.255.255.0 vpn_gateway 10"
client-config-dir ccd
route 192.168.178.0 255.255.255.0
route 192.168.3.0 255.255.255.0
push "dhcp-option DOMAIN local"
push "dhcp-option DOMAIN box"
keepalive 10 120
tls-auth /etc/openvpn/keys/ta.key 0 # This file is secret
cipher AES-256-CBC # AES
auth SHA512
remote-cert-tls client
comp-lzo
persist-key
persist-tun
status openvpn-status.log
verb 3
script-security 2
crl-verify /etc/openvpn-ca/keys/crl.pem
tun-mtu 1432
mssfix 1392
# Client
client
dev tun0
proto udp
remote MYDOMAIN 1196
resolv-retry infinite
nobind
persist-key
persist-tun
ca /etc/openvpn/keys/ca+subca.pem
cert /etc/openvpn/keys/client.crt
key /etc/openvpn/keys/client.key
remote-cert-tls server
tls-auth /etc/openvpn/keys/ta.key 1
cipher AES-256-CBC
auth SHA512
comp-lzo
verb 3
tun-mtu 1432
Output when running the openvpn client.conf command:
Mon Apr 22 16:15:53 2019 Incoming Data Channel: Cipher 'AES-256-CBC' initialized with 256 bit key
Mon Apr 22 16:15:53 2019 Incoming Data Channel: Using 512 bit message hash 'SHA512' for HMAC authentication
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: vpn_gateway undefined
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: failed to parse/resolve route for host/network: 10.0.101.0
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: vpn_gateway undefined
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: failed to parse/resolve route for host/network: 10.0.1.0
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: vpn_gateway undefined
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: failed to parse/resolve route for host/network: 10.0.100.0
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: vpn_gateway undefined
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: failed to parse/resolve route for host/network: 10.0.0.0
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: vpn_gateway undefined
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: failed to parse/resolve route for host/network: 192.168.184.0
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: vpn_gateway undefined
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: failed to parse/resolve route for host/network: 192.168.1.0
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: vpn_gateway undefined
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: failed to parse/resolve route for host/network: 192.168.183.0
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: vpn_gateway undefined
Mon Apr 22 16:15:53 2019 OpenVPN ROUTE: failed to parse/resolve route for host/network: 192.168.0.0
Mon Apr 22 16:15:53 2019 TUN/TAP device tun0 opened
Mon Apr 22 16:15:53 2019 TUN/TAP TX queue length set to 100
Mon Apr 22 16:15:53 2019 WARNING: this configuration may cache passwords in memory -- use the auth-nocache option to prevent this
Mon Apr 22 16:15:53 2019 Initialization Sequence Completed
