an address which is not valid for any host or interface. QHostAddress:: QHostAddress()Д¬onstructs a null host address object, i.e. QHostAddress:: QHostAddress( quint32 ip4Addr)Д¬onstructs a host address object with the IPv4 address ip4Addr. Ip6Addr must be a 16-byte array in network byte order (big endian). QHostAddress:: QHostAddress( quint8 * ip6Addr) QHostAddress:: QHostAddress(const quint8 * ip6Addr)Д¬onstructs a host address object with the IPv6 address ip6Addr. QHostAddress:: QHostAddress(const Q_IPV6ADDR & ip6Addr)Д¬onstructs a host address object with the IPv6 address ip6Addr. QHostAddress:: QHostAddress(const sockaddr * sockaddr)Д¬onstructs an IPv4 or IPv6 address using the address specified by the native structure sockaddr. QHostAddress:: QHostAddress(const QString & address)Д¬onstructs an IPv4 or IPv6 address based on the string address (e.g., '127.0.0.1'). QHostAddress:: QHostAddress(const QHostAddress & address)Д¬onstructs a copy of the given address. Member Function Documentation QHostAddress:: QHostAddress( QHostAddress::SpecialAddress address)Д¬onstructs a QHostAddress object for address. It stores an OR combination of ConversionModeFlag values. The ConversionMode type is a typedef for QFlags. This enum was introduced or modified in Qt 5.8. QHostAddress('::1') will compare equal to QHostAddress('127.0.0.1').ДЄll unspecified addresses will compare equal, namely AnyIPv4, AnyIPv6 and Any.

Therefore QHostAddress('::192.168.1.1') will compare equal to QHostAddress('192.168.1.1').Д¬onvert the IPv6 loopback addresses to its IPv4 equivalent when comparing. Therefore QHostAddress('::ffff:192.168.1.1') will compare equal to QHostAddress('192.168.1.1').Д¬onvert IPv4-compatible IPv6 addresses (RFC 4291 sect. Operator=(QHostAddress::SpecialAddress other) constДon't convert IPv6 addresses to IPv4 when comparing two QHostAddress objects of different protocols, so they will always be considered different.Д¬onvert IPv4-mapped IPv6 addresses (RFC 4291 sect. Operator=(const QHostAddress & other) const Operator=(QHostAddress::SpecialAddress address) Operator!=(QHostAddress::SpecialAddress other) const

Operator!=(const QHostAddress & other) const SetAddress(QHostAddress::SpecialAddress address) IsInSubnet(const QHostAddress & subnet, int netmask) const IsEqual(const QHostAddress & other, QHostAddress::ConversionMode mode = TolerantConversion) const QHostAddress(const QHostAddress & address) QHostAddress(QHostAddress::SpecialAddress address)

Loopback ipv6