public void Foo()
{
string ip = "127.0.0.1/28";
IPAddressRange range = IPAddressRange.FromCidrAddress(ip);
Assert.IsFalse(IPAddressRange.IsNullOrEmpty(range));
Console.Error.WriteLine(range.ToString());
}
public void ParseCidrBlockTest()
{
string ip = "127.10.0.0/28";
IPAddressRange range = IPAddressRange.FromCidrAddress(ip);
IPAddress.TryParse("127.10.0.0", out IPAddress lower);
IPAddress.TryParse("127.10.0.15", out IPAddress higher);
Assert.IsFalse(IPAddressRange.IsNullOrEmpty(range));
Assert.AreEqual(lower, range.Lower);
Assert.AreEqual(higher, range.Upper);
Console.Error.WriteLine(range.ToString());
}