Hi, I guess that creates a bit of a hassle on the flent side as it needs to know the address type in order to surround it with brackets. It comes from Go's requirement for brackets around IPv6 address literals in net.Dial(). I added an issue for irtt, but I don't know if/when that will ever get updated in a Debian package as I'm not maintaining that. Perhaps a workaround would be to detect IPv6 addresses using Python's ipaddress module and surround it with brackets if necessary before passing it to irtt? I could add that to flent at some point if so... -- You are receiving this because you are subscribed to this thread. Reply to this email directly or view it on GitHub: https://github.com/tohojo/flent/issues/238#issuecomment-930000006