[c#] Reliable method to get machine's MAC address in C#

let's say I have a TcpConnection using my local ip of 192.168.0.182. Then if I will like to know the mac address of that NIC I will call the meothod as: GetMacAddressUsedByIp("192.168.0.182")

public static string GetMacAddressUsedByIp(string ipAddress)
    {
        var ips = new List<string>();
        string output;

        try
        {
            // Start the child process.
            Process p = new Process();
            // Redirect the output stream of the child process.
            p.StartInfo.UseShellExecute = false;

            p.StartInfo.RedirectStandardOutput = true;
            p.StartInfo.UseShellExecute = false;
            p.StartInfo.CreateNoWindow = true;
            p.StartInfo.FileName = "ipconfig";
            p.StartInfo.Arguments = "/all";
            p.Start();
            // Do not wait for the child process to exit before
            // reading to the end of its redirected stream.
            // p.WaitForExit();
            // Read the output stream first and then wait.
            output = p.StandardOutput.ReadToEnd();
            p.WaitForExit();

        }
        catch
        {
            return null;
        }

        // pattern to get all connections
        var pattern = @"(?xis) 
(?<Header>
     (\r|\n) [^\r]+ :  \r\n\r\n
)
(?<content>
    .+? (?= ( (\r\n\r\n)|($)) )
)";

        List<Match> matches = new List<Match>();

        foreach (Match m in Regex.Matches(output, pattern))
            matches.Add(m);

        var connection = matches.Select(m => new
        {
            containsIp = m.Value.Contains(ipAddress),
            containsPhysicalAddress = Regex.Match(m.Value, @"(?ix)Physical \s Address").Success,
            content = m.Value
        }).Where(x => x.containsIp && x.containsPhysicalAddress)
        .Select(m => Regex.Match(m.content, @"(?ix)  Physical \s address [^:]+ : \s* (?<Mac>[^\s]+)").Groups["Mac"].Value).FirstOrDefault();

        return connection;
    }