QHostAddress::isGlobal returns true for local network addresses, such as QHostAddress("192.168.0.1").isGlobal() which returns true.

Although I understand that this behavior is implemented according to the description in RFC 4193 section 1, I find it not intuitive.

Generally, "global" means "not local", and it would be better if the function returned false for IPv6 unique local unicast addresses and IPv4 private addresses.