After updating to 2.4 have this on updates check:
Error code: err_response_curl
- line 832 of /lib/pluginlib.php: available_update_checker_exception thrown
- line 718 of /lib/pluginlib.php: call to available_update_checker->get_response()
- line 481 of /admin/index.php: call to available_update_checker->fetch()
It looks like IP address is in ipv6 format. Our servers doesn't support ipv6 (administrators told me this). How can i switch back to using ipv4 for checking updates?