how to send curl http request to ipv6 ip address

curl -v -g "http://[1a04:a0:2002:4201::50]"

* About to connect() to 1a04:a0:2002:4201::50 port 80 (#0)

*   Trying 1a04:a0:2002:4201::50... Connection timed out

* couldn't connect to host

* Closing connection #0

curl: (7) couldn't connect to host

Linux: IPv6 deaktif hale getirme

sysctl -w net.ipv6.conf.all.disable_ipv6=1
sysctl -w net.ipv6.conf.default.disable_ipv6=1
sysctl -w net.ipv6.conf.lo.disable_ipv6=1