NetworkInterface.GetAllNetworkInterfaces返回的筛选列表

Question

The NetworkInterface.GetAllNetworkInterfaces method returns a list of all interfaces on the system, but it returns a lot of seemingly garbage interfaces too like

xxxx::xxxx:xxxx:xxxx:xxxx%12

::1

in addition to "normal" ones like

127.0.0.1

192.168.0.3

etc

I only want keep these "normal" ones. What criteria (properties, methods) should I use for this?

Answer 1

Have a look at using the LINW Where method.

Something like

var yourList = NetworkInterface.GetAllNetworkInterfaces().Where(x => /*your boolean expression here>*/)

Answer 2

The 'garbage' ones are IPv6 addresses. They're goodness. But if you only need the IPv4 ones, do:

var list = NetworkInterface
    .GetAllNetworkInterfaces()
    .Where(n => n.GetIPProperties().UnicastAddresses.First().Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork);