vpn-client error

[prxpostern]

hey , i used your vpn-client docker and i got bellow errors. how can i fix it ?

my docker has only ipv4 address.

vpn-gateway | Sun Dec 10 06:21:34 2023 Options error: option 'route-ipv6' cannot be used in this context ([PUSH-OPTIONS])
vpn-gateway | Sun Dec 10 06:21:34 2023 Options error: option 'dhcp-option' cannot be used in this context ([PUSH-OPTIONS])
vpn-gateway | Sun Dec 10 06:21:34 2023 Options error: option 'route' cannot be used in this context ([PUSH-OPTIONS])
vpn-gateway | Sun Dec 10 06:21:34 2023 OPTIONS IMPORT: timers and/or timeouts modified
vpn-gateway | Sun Dec 10 06:21:34 2023 OPTIONS IMPORT: explicit notify parm(s) modified
vpn-gateway | Sun Dec 10 06:21:34 2023 OPTIONS IMPORT: compression parms modified
vpn-gateway | Sun Dec 10 06:21:34 2023 OPTIONS IMPORT: --sndbuf/--rcvbuf options modified
vpn-gateway | Sun Dec 10 06:21:34 2023 Socket Buffers: R=[212992->425984] S=[212992->425984]
vpn-gateway | Sun Dec 10 06:21:34 2023 OPTIONS IMPORT: --ifconfig/up options modified
vpn-gateway | Sun Dec 10 06:21:34 2023 OPTIONS IMPORT: peer-id set
vpn-gateway | Sun Dec 10 06:21:34 2023 OPTIONS IMPORT: adjusting link_mtu to 1625
vpn-gateway | Sun Dec 10 06:21:34 2023 OPTIONS IMPORT: data channel crypto options modified
vpn-gateway | Sun Dec 10 06:21:34 2023 Data Channel: using negotiated cipher 'AES-256-GCM'
vpn-gateway | Sun Dec 10 06:21:34 2023 Outgoing Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key
vpn-gateway | Sun Dec 10 06:21:34 2023 Incoming Data Channel: Cipher 'AES-256-GCM' initialized with 256 bit key
vpn-gateway | Sun Dec 10 06:21:34 2023 ROUTE_GATEWAY 172.19.0.1/255.255.0.0 IFACE=eth0 HWADDR=02:42:ac:13:00:02
vpn-gateway | Sun Dec 10 06:21:34 2023 TUN/TAP device tun0 opened
vpn-gateway | Sun Dec 10 06:21:34 2023 TUN/TAP TX queue length set to 100
vpn-gateway | Sun Dec 10 06:21:34 2023 /sbin/ip link set dev tun0 up mtu 1500
vpn-gateway | Sun Dec 10 06:21:34 2023 /sbin/ip addr add dev tun0 local 172.18.12.26 peer 172.18.12.25
vpn-gateway | Sun Dec 10 06:21:34 2023 /sbin/ip -6 addr add fde4:8dba:82e2::1005/64 dev tun0
vpn-gateway | RTNETLINK answers: Permission denied
vpn-gateway | Sun Dec 10 06:21:34 2023 Linux ip -6 addr add failed: external program exited with error status: 2
vpn-gateway | Sun Dec 10 06:21:34 2023 Exiting due to fatal error
vpn-gateway exited with code 1