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MulticastOption Constructor (IPAddress, IPAddress)

Initializes a new instance of the MulticastOption class with the specified IP multicast group address and local IP address associated with a network interface.

Namespace:  System.Net.Sockets
Assembly:  System (in System.dll)

public MulticastOption(
	IPAddress group,
	IPAddress mcint


Type: System.Net.IPAddress

The group IPAddress.

Type: System.Net.IPAddress

The local IPAddress.


group is null.


mcint is null.

For machines with multiple network cards, you must use this constructor to create MulticastOption instances.

The following example creates a MulticastOption object.

// Define a MulticastOption object specifying the multicast group  
// address and the local IPAddress. 
// The multicast group address is the same as the address used by the server.
mcastOption = new MulticastOption(mcastAddress, localIPAddr);


.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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