Get All IP Addresses on Machine

Question

How can I get all of the IP addresses attached to the machine that my application (C# NET Console app) is running on? I need to bind a WCF service to the primary IP address, and return a list of the full IP address list.

using System.Net;

string myHostName = Dns.GetHostName().ToString();
string ipAddress = Dns.Resolve(HostName).AddressList[0].ToString();

This is what I am using right now to get the Primary IP address, but I can't figure out how to get the rest to return them.

If I bind a WCF service to localhost:8000, will that expose it on the primary?

Answer 1

I think this example should help you.

// Get host name
String strHostName = Dns.GetHostName();

// Find host by name
IPHostEntry iphostentry = Dns.GetHostByName(strHostName);

// Enumerate IP addresses
foreach(IPAddress ipaddress in iphostentry.AddressList)
{
    ....
}

Edit:

"There's no such thing as a "primary" IP address.

The routing table determines which outward-facing IP address is used depending on the destination IP address (and by extension, the network interface, which itself can be virtual or physical)."