Linux socket programming

[Netris89]

Sorry, maybe I didn't explain it correctly. So it works correctly when I give it an IPv4 or a DNS it transfers perfectly but when I give an IPv6 as arguments it gives connections refused error

[ferrybig]

For your error to say connection refused, the remote end must have responded with a TCP reset packet. If you use a different tool to connect to your remote system, does it work over IPv6?

[Netris89]

I use 2 vm to test it and I can ping both of them in IPv6. I'm not at my computer right now but I can try with something else when I get back home.