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ERROR: Cannot open TUN/TAP dev /dev/net/tun: No such device (errno=19) #182

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Lifferman opened this issue Jun 27, 2021 · 1 comment
Open

ERROR: Cannot open TUN/TAP dev /dev/net/tun: No such device (errno=19) #182

Lifferman opened this issue Jun 27, 2021 · 1 comment

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@Lifferman
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Hi,
I try to add this docker to my Synology without success. I tried to delete and remake docker, but i get this error...
my conf:
image
image

Created by...
___.   .__       .__                   
\_ |__ |__| ____ |  |__   ____ ___  ___
 | __ \|  |/    \|  |  \_/ __ \\  \/  /
 | \_\ \  |   |  \   Y  \  ___/ >    < 
 |___  /__|___|  /___|  /\___  >__/\_ \
     \/        \/     \/     \/      \/
   https://hub.docker.com/u/binhex/

2021-06-27 12:28:05.209031 [info] System information Linux rtorrentvpn1 4.4.59+ #25556 SMP PREEMPT Thu Mar 18 13:00:34 CST 2021 x86_64 GNU/Linux
2021-06-27 12:28:05.249791 [info] OS_ARCH defined as 'x86-64'
2021-06-27 12:28:05.291051 [info] PUID defined as '0'
2021-06-27 12:28:05.332922 [info] PGID defined as '0'
2021-06-27 12:28:05.638771 [warn] UMASK not defined (via -e UMASK), defaulting to '000'
2021-06-27 12:28:05.683584 [info] Setting permissions recursively on volume mappings...
2021-06-27 12:28:06.504179 [info] Deleting files in /tmp (non recursive)...
2021-06-27 12:28:06.550766 [info] VPN_ENABLED defined as 'yes'
2021-06-27 12:28:06.592634 [warn] VPN_CLIENT not defined (via -e VPN_CLIENT), defaulting to 'openvpn'
2021-06-27 12:28:06.634228 [info] VPN_PROV defined as 'airvpn'
2021-06-27 12:28:06.679034 [info] OpenVPN config file (ovpn extension) is located at /config/openvpn/AirVPN_Belgium_UDP-443.ovpn
2021-06-27 12:28:06.749101 [info] VPN remote server(s) defined as 'be.vpn.airdns.org,'
2021-06-27 12:28:06.785678 [info] VPN remote port(s) defined as '443,'
2021-06-27 12:28:06.822696 [info] VPN remote protcol(s) defined as 'udp,'
2021-06-27 12:28:06.863502 [info] VPN_DEVICE_TYPE defined as 'tun0'
2021-06-27 12:28:06.904067 [info] VPN_OPTIONS not defined (via -e VPN_OPTIONS)
2021-06-27 12:28:06.946736 [info] LAN_NETWORK defined as '0.0.0.0/0'
2021-06-27 12:28:06.987642 [warn] NAME_SERVERS not defined (via -e NAME_SERVERS), defaulting to name servers defined in readme.md
2021-06-27 12:28:07.028610 [warn] ENABLE_PRIVOXY not defined (via -e ENABLE_PRIVOXY), defaulting to 'no'
2021-06-27 12:28:07.074022 [info] VPN_INPUT_PORTS not defined (via -e VPN_INPUT_PORTS), skipping allow for custom incoming ports
2021-06-27 12:28:07.116995 [info] VPN_OUTPUT_PORTS not defined (via -e VPN_OUTPUT_PORTS), skipping allow for custom outgoing ports
2021-06-27 12:28:07.160498 [warn] ENABLE_AUTODL_IRSSI not defined (via -e ENABLE_AUTODL_IRSSI), defaulting to 'no'
2021-06-27 12:28:07.202192 [warn] ENABLE_RPC2 not defined (via -e ENABLE_RPC2), defaulting to 'yes'
2021-06-27 12:28:07.243149 [warn] ENABLE_RPC2_AUTH not defined (via -e ENABLE_RPC2_AUTH), defaulting to 'yes'
2021-06-27 12:28:07.283947 [warn] RPC2_USER not defined (via -e RPC2_USER), defaulting to 'admin'
2021-06-27 12:28:07.329311 [warn] RPC2_PASS not defined (via -e RPC2_PASS), using randomised password (password stored in '/config/nginx/security/rpc2_pass')
2021-06-27 12:28:07.370912 [warn] ENABLE_WEBUI_AUTH not defined (via -e ENABLE_WEBUI_AUTH), defaulting to 'yes'
2021-06-27 12:28:07.412473 [info] WEBUI_USER defined as 'lifferman'
2021-06-27 12:28:07.453126 [info] WEBUI_PASS defined as 'clea111199'
2021-06-27 12:28:07.492872 [info] Starting Supervisor...
2021-06-27 12:28:07,770 INFO Included extra file "/etc/supervisor/conf.d/rtorrent.conf" during parsing
2021-06-27 12:28:07,770 INFO Set uid to user 0 succeeded
2021-06-27 12:28:07,775 INFO supervisord started with pid 6
2021-06-27 12:28:08,777 INFO spawned: 'logrotate-script' with pid 197
2021-06-27 12:28:08,779 INFO spawned: 'pyrocore-script' with pid 198
2021-06-27 12:28:08,781 INFO spawned: 'rutorrent-script' with pid 199
2021-06-27 12:28:08,783 INFO spawned: 'shutdown-script' with pid 200
2021-06-27 12:28:08,785 INFO spawned: 'start-script' with pid 201
2021-06-27 12:28:08,787 INFO spawned: 'watchdog-script' with pid 202
2021-06-27 12:28:08,788 INFO reaped unknown pid 7 (exit status 0)
2021-06-27 12:28:08,806 DEBG 'watchdog-script' stdout output:
[info] rTorrent config file already exists, skipping copy

2021-06-27 12:28:08,807 INFO success: logrotate-script entered RUNNING state, process has stayed up for > than 0 seconds (startsecs)
2021-06-27 12:28:08,807 INFO success: pyrocore-script entered RUNNING state, process has stayed up for > than 0 seconds (startsecs)
2021-06-27 12:28:08,808 INFO success: rutorrent-script entered RUNNING state, process has stayed up for > than 0 seconds (startsecs)
2021-06-27 12:28:08,808 INFO success: shutdown-script entered RUNNING state, process has stayed up for > than 0 seconds (startsecs)
2021-06-27 12:28:08,808 INFO success: start-script entered RUNNING state, process has stayed up for > than 0 seconds (startsecs)
2021-06-27 12:28:08,808 INFO success: watchdog-script entered RUNNING state, process has stayed up for > than 0 seconds (startsecs)
2021-06-27 12:28:08,809 DEBG 'start-script' stdout output:
[info] VPN is enabled, beginning configuration of VPN

2021-06-27 12:28:08,874 DEBG 'start-script' stdout output:
[info] Adding 209.222.18.222 to /etc/resolv.conf

2021-06-27 12:28:08,879 DEBG 'start-script' stdout output:
[info] Adding 84.200.69.80 to /etc/resolv.conf

2021-06-27 12:28:08,883 DEBG 'start-script' stdout output:
[info] Adding 37.235.1.174 to /etc/resolv.conf

2021-06-27 12:28:08,888 DEBG 'start-script' stdout output:
[info] Adding 1.1.1.1 to /etc/resolv.conf

2021-06-27 12:28:08,893 DEBG 'start-script' stdout output:
[info] Adding 209.222.18.218 to /etc/resolv.conf

2021-06-27 12:28:08,897 DEBG 'start-script' stdout output:
[info] Adding 37.235.1.177 to /etc/resolv.conf

2021-06-27 12:28:08,902 DEBG 'start-script' stdout output:
[info] Adding 84.200.70.40 to /etc/resolv.conf

2021-06-27 12:28:08,906 DEBG 'start-script' stdout output:
[info] Adding 1.0.0.1 to /etc/resolv.conf

2021-06-27 12:28:09,077 DEBG fd 11 closed, stopped monitoring <POutputDispatcher at 140227781311072 for <Subprocess at 140227781310400 with name pyrocore-script in state RUNNING> (stdout)>
2021-06-27 12:28:09,078 DEBG fd 15 closed, stopped monitoring <POutputDispatcher at 140227780797728 for <Subprocess at 140227781310400 with name pyrocore-script in state RUNNING> (stderr)>
2021-06-27 12:28:09,078 INFO exited: pyrocore-script (exit status 0; expected)
2021-06-27 12:28:09,078 DEBG received SIGCHLD indicating a child quit
2021-06-27 12:28:09,148 DEBG 'start-script' stdout output:
[info] Default route for container is 172.17.0.1

2021-06-27 12:28:09,166 DEBG 'start-script' stdout output:
[info] Docker network defined as    172.17.0.0/16

2021-06-27 12:28:09,170 DEBG 'start-script' stdout output:
[info] Adding 0.0.0.0/0 as route via docker eth0

2021-06-27 12:28:09,171 DEBG 'start-script' stderr output:
RTNETLINK answers: File exists

2021-06-27 12:28:09,171 DEBG 'start-script' stdout output:
[info] ip route defined as follows...
--------------------

2021-06-27 12:28:09,173 DEBG 'start-script' stdout output:
default via 172.17.0.1 dev eth0 
172.17.0.0/16 dev eth0 proto kernel scope link src 172.17.0.4 
broadcast 127.0.0.0 dev lo table local proto kernel scope link src 127.0.0.1 
local 127.0.0.0/8 dev lo table local proto kernel scope host src 127.0.0.1 
local 127.0.0.1 dev lo table local proto kernel scope host src 127.0.0.1 
broadcast 127.255.255.255 dev lo table local proto kernel scope link src 127.0.0.1 
broadcast 172.17.0.0 dev eth0 table local proto kernel scope link src 172.17.0.4 
local 172.17.0.4 dev eth0 table local proto kernel scope host src 172.17.0.4 
broadcast 172.17.255.255 dev eth0 table local proto kernel scope link src 172.17.0.4 

2021-06-27 12:28:09,173 DEBG 'start-script' stdout output:
unreachable default dev lo proto kernel metric 4294967295 error 4294967195 pref medium
unreachable default dev lo proto kernel metric 4294967295 error 4294967195 pref medium
--------------------

2021-06-27 12:28:09,182 DEBG 'start-script' stdout output:
iptable_mangle          1656  0
ip_tables              13836  3 iptable_filter,iptable_mangle,iptable_nat
x_tables               16046  19 ip6table_filter,xt_ipvs,xt_iprange,xt_mark,xt_recent,ip_tables,xt_tcpudp,ipt_MASQUERADE,xt_limit,xt_state,xt_conntrack,xt_LOG,xt_nat,xt_multiport,iptable_filter,xt_REDIRECT,iptable_mangle,ip6_tables,xt_addrtype

2021-06-27 12:28:09,182 DEBG 'start-script' stdout output:
[info] iptable_mangle support detected, adding fwmark for tables

2021-06-27 12:28:09,232 DEBG 'start-script' stdout output:
[info] iptables defined as follows...
--------------------

2021-06-27 12:28:09,234 DEBG 'start-script' stdout output:
-P INPUT DROP
-P FORWARD DROP
-P OUTPUT DROP
-A INPUT -s 172.17.0.0/16 -d 172.17.0.0/16 -j ACCEPT
-A INPUT -s 194.187.251.90/32 -i eth0 -j ACCEPT
-A INPUT -i eth0 -p tcp -m tcp --dport 9080 -j ACCEPT
-A INPUT -i eth0 -p udp -m udp --dport 9080 -j ACCEPT
-A INPUT -i eth0 -p tcp -m tcp --dport 9443 -j ACCEPT
-A INPUT -i eth0 -p udp -m udp --dport 9443 -j ACCEPT
-A INPUT -d 172.17.0.0/16 -i eth0 -p tcp -m tcp --dport 5000 -j ACCEPT
-A INPUT -p icmp -m icmp --icmp-type 0 -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -i tun0 -j ACCEPT
-A OUTPUT -s 172.17.0.0/16 -d 172.17.0.0/16 -j ACCEPT
-A OUTPUT -d 194.187.251.90/32 -o eth0 -j ACCEPT
-A OUTPUT -o eth0 -p tcp -m tcp --sport 9080 -j ACCEPT
-A OUTPUT -o eth0 -p udp -m udp --sport 9080 -j ACCEPT
-A OUTPUT -o eth0 -p tcp -m tcp --sport 9443 -j ACCEPT
-A OUTPUT -o eth0 -p udp -m udp --sport 9443 -j ACCEPT
-A OUTPUT -s 172.17.0.0/16 -o eth0 -p tcp -m tcp --sport 5000 -j ACCEPT
-A OUTPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT
-A OUTPUT -o lo -j ACCEPT
-A OUTPUT -o tun0 -j ACCEPT

2021-06-27 12:28:09,235 DEBG 'start-script' stdout output:
--------------------

2021-06-27 12:28:09,235 DEBG 'start-script' stdout output:
[info] Starting OpenVPN (non daemonised)...

2021-06-27 12:28:09,244 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 DEPRECATED OPTION: --cipher set to 'AES-256-CBC' but missing in --data-ciphers (AES-256-GCM:AES-128-GCM). Future OpenVPN version will ignore --cipher for cipher negotiations. Add 'AES-256-CBC' to --data-ciphers or change --cipher 'AES-256-CBC' to --data-ciphers-fallback 'AES-256-CBC' to silence this warning.

2021-06-27 12:28:09,244 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 OpenVPN 2.5.1 [git:makepkg/f186691b32e68362+] x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on Feb 24 2021
2021-06-27 12:28:09 library versions: OpenSSL 1.1.1j  16 Feb 2021, LZO 2.10
2021-06-27 12:28:09 NOTE: the current --script-security setting may allow this configuration to call user-defined scripts

2021-06-27 12:28:09,245 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 Outgoing Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
2021-06-27 12:28:09 Incoming Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication

2021-06-27 12:28:09,245 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 TCP/UDP: Preserving recently used remote address: [AF_INET]194.187.251.90:443
2021-06-27 12:28:09 Socket Buffers: R=[212992->212992] S=[212992->212992]

2021-06-27 12:28:09,246 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 UDP link local: (not bound)
2021-06-27 12:28:09 UDP link remote: [AF_INET]194.187.251.90:443

2021-06-27 12:28:09,259 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 TLS: Initial packet from [AF_INET]194.187.251.90:443, sid=7242d3b4 686690ce

2021-06-27 12:28:09,259 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 net_route_v4_best_gw query: dst 0.0.0.0
2021-06-27 12:28:09 net_route_v4_best_gw result: via 172.17.0.1 dev eth0

2021-06-27 12:28:09,281 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 VERIFY OK: depth=1, C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org

2021-06-27 12:28:09,281 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 VERIFY KU OK
2021-06-27 12:28:09 Validating certificate extended key usage

2021-06-27 12:28:09,282 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 ++ Certificate has EKU (str) TLS Web Server Authentication, expects TLS Web Server Authentication
2021-06-27 12:28:09 VERIFY EKU OK
2021-06-27 12:28:09 VERIFY OK: depth=0, C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=Capricornus, emailAddress=info@airvpn.org

2021-06-27 12:28:09,314 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 Control Channel: TLSv1.3, cipher TLSv1.3 TLS_CHACHA20_POLY1305_SHA256, 4096 bit RSA
2021-06-27 12:28:09 [Capricornus] Peer Connection Initiated with [AF_INET]194.187.251.90:443

2021-06-27 12:28:09,508 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 PUSH: Received control message: 'PUSH_REPLY,comp-lzo no,redirect-gateway ipv6 def1 bypass-dhcp,dhcp-option DNS 10.12.160.1,dhcp-option DNS6 fde6:7a:7d20:8a0::1,tun-ipv6,route-gateway 10.12.160.1,topology subnet,ping 10,ping-restart 60,ifconfig-ipv6 fde6:7a:7d20:8a0::104b/64 fde6:7a:7d20:8a0::1,ifconfig 10.12.160.77 255.255.255.0,peer-id 3,cipher AES-256-GCM'
2021-06-27 12:28:09 Pushed option removed by filter: 'dhcp-option DNS6 fde6:7a:7d20:8a0::1'
2021-06-27 12:28:09 Pushed option removed by filter: 'tun-ipv6'

2021-06-27 12:28:09,508 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 Pushed option removed by filter: 'ifconfig-ipv6 fde6:7a:7d20:8a0::104b/64 fde6:7a:7d20:8a0::1'
2021-06-27 12:28:09 OPTIONS IMPORT: timers and/or timeouts modified
2021-06-27 12:28:09 OPTIONS IMPORT: compression parms modified
2021-06-27 12:28:09 OPTIONS IMPORT: --ifconfig/up options modified
2021-06-27 12:28:09 OPTIONS IMPORT: route options modified
2021-06-27 12:28:09 OPTIONS IMPORT: route-related options modified
2021-06-27 12:28:09 OPTIONS IMPORT: --ip-win32 and/or --dhcp-option options modified
2021-06-27 12:28:09 OPTIONS IMPORT: peer-id set
2021-06-27 12:28:09 OPTIONS IMPORT: adjusting link_mtu to 1625
2021-06-27 12:28:09 OPTIONS IMPORT: data channel crypto options modified
2021-06-27 12:28:09 Data Channel: using negotiated cipher 'AES-256-GCM'
2021-06-27 12:28:09 Outgoing Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key
2021-06-27 12:28:09 Incoming Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key
2021-06-27 12:28:09 net_route_v4_best_gw query: dst 0.0.0.0
2021-06-27 12:28:09 net_route_v4_best_gw result: via 172.17.0.1 dev eth0

2021-06-27 12:28:09,508 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 ROUTE_GATEWAY 172.17.0.1/255.255.0.0 IFACE=eth0 HWADDR=02:42:ac:11:00:04
2021-06-27 12:28:09 GDG6: remote_host_ipv6=n/a
2021-06-27 12:28:09 net_route_v6_best_gw query: dst ::
2021-06-27 12:28:09 net_route_v6_best_gw result: via :: dev lo
2021-06-27 12:28:09 ROUTE6_GATEWAY :: ON_LINK IFACE=lo

2021-06-27 12:28:09,510 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 ERROR: Cannot open TUN/TAP dev /dev/net/tun: No such device (errno=19)
2021-06-27 12:28:09 Exiting due to fatal error

2021-06-27 12:28:09,511 DEBG 'start-script' stdout output:
[info] Starting OpenVPN (non daemonised)...

2021-06-27 12:28:09,520 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 DEPRECATED OPTION: --cipher set to 'AES-256-CBC' but missing in --data-ciphers (AES-256-GCM:AES-128-GCM). Future OpenVPN version will ignore --cipher for cipher negotiations. Add 'AES-256-CBC' to --data-ciphers or change --cipher 'AES-256-CBC' to --data-ciphers-fallback 'AES-256-CBC' to silence this warning.

2021-06-27 12:28:09,520 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 OpenVPN 2.5.1 [git:makepkg/f186691b32e68362+] x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [LZ4] [EPOLL] [PKCS11] [MH/PKTINFO] [AEAD] built on Feb 24 2021
2021-06-27 12:28:09 library versions: OpenSSL 1.1.1j  16 Feb 2021, LZO 2.10
2021-06-27 12:28:09 NOTE: the current --script-security setting may allow this configuration to call user-defined scripts

2021-06-27 12:28:09,521 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 Outgoing Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication
2021-06-27 12:28:09 Incoming Control Channel Authentication: Using 160 bit message hash 'SHA1' for HMAC authentication

2021-06-27 12:28:09,521 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 TCP/UDP: Preserving recently used remote address: [AF_INET]194.187.251.90:443
2021-06-27 12:28:09 Socket Buffers: R=[212992->212992] S=[212992->212992]
2021-06-27 12:28:09 UDP link local: (not bound)
2021-06-27 12:28:09 UDP link remote: [AF_INET]194.187.251.90:443

2021-06-27 12:28:09,535 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 TLS: Initial packet from [AF_INET]194.187.251.90:443, sid=33313e5d f1a01d18

2021-06-27 12:28:09,535 DEBG 'start-script' stdout output:
2021-06-27 12:28:09 net_route_v4_best_gw query: dst 0.0.0.0
2021-06-27 12:28:09 net_route_v4_best_gw result: via 172.17.0.1 dev eth0

2021-06-27 12:28:11,594 DEBG 'start-script' stdout output:
2021-06-27 12:28:11 VERIFY OK: depth=1, C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=airvpn.org CA, emailAddress=info@airvpn.org

2021-06-27 12:28:11,595 DEBG 'start-script' stdout output:
2021-06-27 12:28:11 VERIFY KU OK
2021-06-27 12:28:11 Validating certificate extended key usage
2021-06-27 12:28:11 ++ Certificate has EKU (str) TLS Web Server Authentication, expects TLS Web Server Authentication
2021-06-27 12:28:11 VERIFY EKU OK
2021-06-27 12:28:11 VERIFY OK: depth=0, C=IT, ST=IT, L=Perugia, O=airvpn.org, CN=Capricornus, emailAddress=info@airvpn.org

2021-06-27 12:28:11,627 DEBG 'start-script' stdout output:
2021-06-27 12:28:11 Control Channel: TLSv1.3, cipher TLSv1.3 TLS_CHACHA20_POLY1305_SHA256, 4096 bit RSA
2021-06-27 12:28:11 [Capricornus] Peer Connection Initiated with [AF_INET]194.187.251.90:443

2021-06-27 12:28:12,300 DEBG 'start-script' stdout output:
2021-06-27 12:28:12 SENT CONTROL [Capricornus]: 'PUSH_REQUEST' (status=1)
2021-06-27 12:28:12 PUSH: Received control message: 'PUSH_REPLY,comp-lzo no,redirect-gateway ipv6 def1 bypass-dhcp,dhcp-option DNS 10.12.160.1,dhcp-option DNS6 fde6:7a:7d20:8a0::1,tun-ipv6,route-gateway 10.12.160.1,topology subnet,ping 10,ping-restart 60,ifconfig-ipv6 fde6:7a:7d20:8a0::104b/64 fde6:7a:7d20:8a0::1,ifconfig 10.12.160.77 255.255.255.0,peer-id 5,cipher AES-256-GCM'

2021-06-27 12:28:12,300 DEBG 'start-script' stdout output:
2021-06-27 12:28:12 Pushed option removed by filter: 'dhcp-option DNS6 fde6:7a:7d20:8a0::1'
2021-06-27 12:28:12 Pushed option removed by filter: 'tun-ipv6'
2021-06-27 12:28:12 Pushed option removed by filter: 'ifconfig-ipv6 fde6:7a:7d20:8a0::104b/64 fde6:7a:7d20:8a0::1'
2021-06-27 12:28:12 OPTIONS IMPORT: timers and/or timeouts modified
2021-06-27 12:28:12 OPTIONS IMPORT: compression parms modified
2021-06-27 12:28:12 OPTIONS IMPORT: --ifconfig/up options modified
2021-06-27 12:28:12 OPTIONS IMPORT: route options modified
2021-06-27 12:28:12 OPTIONS IMPORT: route-related options modified
2021-06-27 12:28:12 OPTIONS IMPORT: --ip-win32 and/or --dhcp-option options modified
2021-06-27 12:28:12 OPTIONS IMPORT: peer-id set
2021-06-27 12:28:12 OPTIONS IMPORT: adjusting link_mtu to 1625
2021-06-27 12:28:12 OPTIONS IMPORT: data channel crypto options modified
2021-06-27 12:28:12 Data Channel: using negotiated cipher 'AES-256-GCM'
2021-06-27 12:28:12 Outgoing Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key
2021-06-27 12:28:12 Incoming Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key
2021-06-27 12:28:12 net_route_v4_best_gw query: dst 0.0.0.0
2021-06-27 12:28:12 net_route_v4_best_gw result: via 172.17.0.1 dev eth0
2021-06-27 12:28:12 ROUTE_GATEWAY 172.17.0.1/255.255.0.0 IFACE=eth0 HWADDR=02:42:ac:11:00:04
2021-06-27 12:28:12 GDG6: remote_host_ipv6=n/a

2021-06-27 12:28:12,300 DEBG 'start-script' stdout output:
2021-06-27 12:28:12 net_route_v6_best_gw query: dst ::
2021-06-27 12:28:12 net_route_v6_best_gw result: via :: dev lo
2021-06-27 12:28:12 ROUTE6_GATEWAY :: ON_LINK IFACE=lo

2021-06-27 12:28:12,302 DEBG 'start-script' stdout output:
2021-06-27 12:28:12 ERROR: Cannot open TUN/TAP dev /dev/net/tun: No such device (errno=19)
2021-06-27 12:28:12 Exiting due to fatal error
@Lifferman
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I made it work by adding openvpn into synology, into network settings, and it's working...
i suppose it need having "tun0" onto synology to map it under docker...

it's more plaster than a real solution/fix, at my opinion...

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@Lifferman