-L only binds to IPv4 127.0.0.1, not IPv6 ::1

[ygoe]

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==> Read and try the examples first before requesting help <==

https://github.com/erebe/wstunnel?#examples

If you have trouble with wireguard https://github.com/erebe/wstunnel?#wireguard-and-wstunnel-

If wstunnel cannot connect to server while wireguard is on,
be sure you have added a static route via your main gateway for the ip of wstunnel server.
Else if you forward all the traffic without putting a static route,
you will endup looping your traffic wireguard interface -> wstunnel client -> wireguard interface
If you have trouble making it works on windows, please check this issue #252

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Describe the goal

A clear and concise description of what you try to achieve.
Describe if you are behind a proxy, if you use some kind relay, what protocol/app you want to forward

Describe what does not work

A clear and concise description of why you can't reach your goal.

Describe your wstunnel setup

Paste your logs of wstunnel, started with --log-lvl=DEBUG, and with the command line used

• client
• server

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Version [e.g. 22]

I'm trying out wstunnel with a simple netcat TCP server. Outside the ws tunnel on the local side I connect to "localhost". Netcat seems to resolve this as ::1 first but fails to connect. Then after a short delay it connects to 127.0.0.1 and then it works.

A quick check shows that wstunnel is only listening on 127.0.0.1 but not on ::1. Can this be changed? I only have the -L argument, no address for localhost.
Describe your wstunnel setup

client: wstunnel client -L tcp://9999:127.0.0.1:2345 wss://myhostname:443
server: doesn't matter

Desktop (please complete the following information):

OS: Windows 11

I'm using the latest release wstunnel 10.1.9.

[erebe]

Hello,

By default it is 127.0.0.1, but you can select the bind address you want to use

 -L, --local-to-remote <{tcp,udp,socks5,stdio,unix}://[BIND:]PORT:HOST:PORT>

in your case

-L 'tcp://[::1]:9999:127.0.0.1:2345' 
or 
-L 'tcp://0.0.0.0:9999:127.0.0.1:2345'
or 
-L 'tcp://[::]:9999:127.0.0.1:2345'
or 
-L 'tcp://192.168.1.1:9999:127.0.0.1:2345'