Del via

IPAddress.IsIPv4MappedToIPv6 Property


Gets whether the IP address is an IPv4-mapped IPv6 address.

 property bool IsIPv4MappedToIPv6 { bool get(); };
public bool IsIPv4MappedToIPv6 { get; }
member this.IsIPv4MappedToIPv6 : bool
Public ReadOnly Property IsIPv4MappedToIPv6 As Boolean

Property Value

Returns Boolean.

true if the IP address is an IPv4-mapped IPv6 address; otherwise, false.


Dual-stack sockets always require IPv6 addresses. The ability to interact with an IPv4 address requires the use of the IPv4-mapped IPv6 address format. Any IPv4 addresses must be represented in the IPv4-mapped IPv6 address format which enables an IPv6 only application to communicate with an IPv4 node. The IPv4-mapped IPv6 address format allows the IPv4 address of an IPv4 node to be represented as an IPv6 address. The IPv4 address is encoded into the low-order 32 bits of the IPv6 address, and the high-order 96 bits hold the fixed prefix 0:0:0:0:0:FFFF. The IPv4-mapped IPv6 address format is specified in RFC 4291. For more information, see

Applies to