Michael Davies' Blog

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Michael Davies' Blog

Michael Davies
michael [at] the-davies.net
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IP Address parsing weirdness

Hmmm, I wouldn't have expected this:

    string str = "2.10";
    if (null != System.Net.IPAddress.Parse(str))
    {
        System.Console.WriteLine("This is an IP address");
    }
    else
    {
        System.Console.WriteLine("This is NOT an IP address");
    }

Can you guess what is printed? I didn't know you could abbreviate IPv4 addresses. Can anyone point me to an RFC that justifies this weirdness?

Update: Well, I'll be a suck egg mule. See your local copy of inet(3N).

| 07 Sep 2005 | #

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