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Hello. I've been using hummingbird with just ovpn configuration files for some time and works great, but when I've tried to use commandline options I found some trouble. I compared different configuration files and saw that they where really similar one to another: # diff AirVPN_NL-Alblasserdam_Alcyone_UDP-443.ovpn AirVPN_ES-Barcelona_Eridanus_UDP-443.ovpn 4c4 < # AirVPN_NL-Alblasserdam_Alcyone_UDP-443 --- > # AirVPN_ES-Barcelona_Eridanus_UDP-443 9c9 < remote 213.152.161.116 443 --- > remote 185.183.106.2 443 This made me think that I could have a reduced amount of configuration files and call hummingbird with its --server option to pick the server. # hummingbird -s 213.152.161.116 AirVPN_ES-Barcelona_Eridanus_UDP-443.ovpn But It didn't work as It looks like network lock adds the IP in the configuration file instead of the one provided as an argument (logs at the end) I tried to do it setting network lock off and worked fine. Hummingbird - AirVPN OpenVPN 3 Client 1.0.2 - 4 February 2020 Sat May 16 12:09:37.245 2020 Starting thread Sat May 16 12:09:37.245 2020 OpenVPN core 3.6.3 AirVPN linux x86_64 64-bit Sat May 16 12:09:37.250 2020 Frame=512/2048/512 mssfix-ctrl=1250 Sat May 16 12:09:37.254 2020 UNUSED OPTIONS 3 [resolv-retry] [infinite] 4 [nobind] 5 [persist-key] 6 [persist-tun] 7 [auth-nocache] 8 [route-delay] [5] 9 [verb] [3] 10 [explicit-exit-notify] [5] Sat May 16 12:09:37.254 2020 EVENT: RESOLVE Sat May 16 12:09:37.254 2020 Network filter and lock is using iptables-legacy Sat May 16 12:09:37.260 2020 Successfully loaded kernel module iptable_filter Sat May 16 12:09:37.275 2020 Successfully loaded kernel module iptable_nat Sat May 16 12:09:37.281 2020 Successfully loaded kernel module iptable_mangle Sat May 16 12:09:37.286 2020 Successfully loaded kernel module iptable_security Sat May 16 12:09:37.291 2020 Successfully loaded kernel module iptable_raw Sat May 16 12:09:37.296 2020 Successfully loaded kernel module ip6table_filter Sat May 16 12:09:37.312 2020 Successfully loaded kernel module ip6table_nat Sat May 16 12:09:37.318 2020 Successfully loaded kernel module ip6table_mangle Sat May 16 12:09:37.323 2020 Successfully loaded kernel module ip6table_security Sat May 16 12:09:37.328 2020 Successfully loaded kernel module ip6table_raw Sat May 16 12:09:37.331 2020 Network filter successfully initialized Sat May 16 12:09:37.331 2020 Local IPv4 address 192.168.1.7 Sat May 16 12:09:37.331 2020 Local interface enp62s0u1u2 Sat May 16 12:09:37.331 2020 Local interface wlp2s0 Sat May 16 12:09:37.331 2020 Setting up network filter and lock Sat May 16 12:09:37.331 2020 Allowing system DNS 127.0.0.1 to pass through the network filter Sat May 16 12:09:37.331 2020 Adding IPv4 server 185.183.106.2 to network filter Sat May 16 12:09:37.349 2020 Network filter and lock successfully activated Sat May 16 12:09:37.349 2020 Contacting 213.152.161.116:443 via UDP Sat May 16 12:09:37.349 2020 EVENT: WAIT Sat May 16 12:09:37.349 2020 net_route_best_gw query IPv4: 213.152.161.116/32 Sat May 16 12:09:37.349 2020 sitnl_route_best_gw result: via 192.168.1.1 dev enp62s0u1u2 Sat May 16 12:09:37.349 2020 net_route_add: 213.152.161.116/32 via 192.168.1.1 dev enp62s0u1u2 table 0 metric 0 Sat May 16 12:09:37.350 2020 Sat May 16 12:09:37.350 2020 Connecting to [213.152.161.116]:443 (213.152.161.116) via UDPv4 Sat May 16 12:09:37.350 2020 UDP send exception: send: Operation not permitted Sat May 16 12:09:37.350 2020 ERROR: NETWORK_SEND_ERROR Sat May 16 12:09:38.254 2020 UDP send exception: send: Operation not permitted Sat May 16 12:09:38.254 2020 ERROR: NETWORK_SEND_ERROR Sat May 16 12:09:39.255 2020 UDP send exception: send: Operation not permitted Sat May 16 12:09:39.255 2020 ERROR: NETWORK_SEND_ERROR Sat May 16 12:09:40.255 2020 UDP send exception: send: Operation not permitted Sat May 16 12:09:40.255 2020 ERROR: NETWORK_SEND_ERROR Sat May 16 12:09:41.255 2020 UDP send exception: send: Operation not permitted Sat May 16 12:09:41.255 2020 ERROR: NETWORK_SEND_ERROR Sat May 16 12:09:42.256 2020 UDP send exception: send: Operation not permitted Sat May 16 12:09:42.256 2020 ERROR: NETWORK_SEND_ERROR

If you refer to the config files then you can create them for every single country you like. Also, it would not add much to security. If you are concerned - use Tor in addition.

Thank you. At the beginning it didn't work and i though the issue was related to those warning. Then i tried to remove opennic dns on my connection settings and now it's working like a charm