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Imported Upstream version 5.18.0.142
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//
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// System.Net.NetworkInformation.IPInterfaceProperties
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//
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// Authors:
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// Gonzalo Paniagua Javier (gonzalo@novell.com)
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// Atsushi Enomoto (atsushi@ximian.com)
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//
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// Copyright (c) 2006-2007 Novell, Inc. (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System.Collections.Generic;
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using System.Net.Sockets;
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using System.IO;
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using System.Text.RegularExpressions;
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using System.Runtime.InteropServices;
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namespace System.Net.NetworkInformation {
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abstract class UnixIPInterfaceProperties : IPInterfaceProperties
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{
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protected IPv4InterfaceProperties ipv4iface_properties;
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protected UnixNetworkInterface iface;
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List <IPAddress> addresses;
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IPAddressCollection dns_servers;
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public UnixIPInterfaceProperties (UnixNetworkInterface iface, List <IPAddress> addresses)
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{
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this.iface = iface;
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this.addresses = addresses;
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}
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public override IPv6InterfaceProperties GetIPv6Properties ()
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{
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throw new NotImplementedException ();
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}
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#if MONODROID
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[DllImport ("__Internal")]
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static extern int _monodroid_get_dns_servers (out IntPtr dns_servers_array);
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void GetDNSServersFromOS ()
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{
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IntPtr dsa;
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int len = _monodroid_get_dns_servers (out dsa);
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if (len <= 0)
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return;
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var servers = new IntPtr [len];
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Marshal.Copy (dsa, servers, 0, len);
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dns_servers = new IPAddressCollection ();
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foreach (IntPtr s in servers) {
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string server_ip = Marshal.PtrToStringAnsi (s);
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Marshal.FreeHGlobal (s);
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IPAddress addr;
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if (!IPAddress.TryParse (server_ip, out addr))
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continue;
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dns_servers.InternalAdd (addr);
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}
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Marshal.FreeHGlobal (dsa);
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}
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#else
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static Regex ns = new Regex (@"\s*nameserver\s+(?<address>.*)");
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static Regex search = new Regex (@"\s*search\s+(?<domain>.*)");
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string dns_suffix;
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DateTime last_parse;
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void ParseResolvConf ()
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{
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try {
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DateTime wt = File.GetLastWriteTime ("/etc/resolv.conf");
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if (wt <= last_parse)
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return;
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last_parse = wt;
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dns_suffix = "";
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dns_servers = new IPAddressCollection ();
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using (StreamReader reader = new StreamReader ("/etc/resolv.conf")) {
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string str;
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string line;
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while ((line = reader.ReadLine ()) != null) {
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line = line.Trim ();
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if (line.Length == 0 || line [0] == '#')
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continue;
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Match match = ns.Match (line);
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if (match.Success) {
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try {
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str = match.Groups ["address"].Value;
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str = str.Trim ();
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dns_servers.InternalAdd (IPAddress.Parse (str));
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} catch {
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}
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} else {
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match = search.Match (line);
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if (match.Success) {
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str = match.Groups ["domain"].Value;
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string [] parts = str.Split (',');
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dns_suffix = parts [0].Trim ();
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}
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}
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}
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}
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} catch {
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}
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}
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#endif
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public override IPAddressInformationCollection AnycastAddresses {
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get {
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var c = new IPAddressInformationCollection ();
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foreach (IPAddress address in addresses) {
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c.InternalAdd (new SystemIPAddressInformation (address, false, false));
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}
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return c;
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}
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}
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[MonoTODO ("Always returns an empty collection.")]
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public override IPAddressCollection DhcpServerAddresses {
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get {
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// There are lots of different DHCP clients
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// that all store their configuration differently.
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// I'm not sure what to do here.
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IPAddressCollection coll = new IPAddressCollection ();
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return coll;
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}
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}
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public override IPAddressCollection DnsAddresses {
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get {
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#if MONODROID
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GetDNSServersFromOS ();
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#else
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ParseResolvConf ();
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#endif
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return dns_servers;
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}
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}
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public override string DnsSuffix {
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get {
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#if MONODROID
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return String.Empty;
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#else
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ParseResolvConf ();
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return dns_suffix;
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#endif
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}
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}
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[MonoTODO ("Always returns true")]
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public override bool IsDnsEnabled {
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get {
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return true;
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}
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}
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[MonoTODO ("Always returns false")]
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public override bool IsDynamicDnsEnabled {
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get {
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return false;
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}
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}
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public override MulticastIPAddressInformationCollection MulticastAddresses {
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get {
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var multicastAddresses = new MulticastIPAddressInformationCollection ();
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foreach (IPAddress address in addresses) {
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byte[] addressBytes = address.GetAddressBytes ();
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if (addressBytes[0] >= 224 && addressBytes[0] <= 239) {
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multicastAddresses.InternalAdd (new SystemMulticastIPAddressInformation (new SystemIPAddressInformation (address, true, false)));
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}
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}
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return multicastAddresses;
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}
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}
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public override UnicastIPAddressInformationCollection UnicastAddresses {
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get {
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var unicastAddresses = new UnicastIPAddressInformationCollection ();
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foreach (IPAddress address in addresses) {
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switch (address.AddressFamily) {
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case AddressFamily.InterNetwork:
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byte top = address.GetAddressBytes () [0];
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if (top >= 224 && top <= 239)
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continue;
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unicastAddresses.InternalAdd (new LinuxUnicastIPAddressInformation (address));
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break;
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case AddressFamily.InterNetworkV6:
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if (address.IsIPv6Multicast)
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continue;
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unicastAddresses.InternalAdd (new LinuxUnicastIPAddressInformation (address));
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break;
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}
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}
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return unicastAddresses;
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}
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}
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[MonoTODO ("Always returns an empty collection.")]
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public override IPAddressCollection WinsServersAddresses {
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get {
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// I do SUPPOSE we could scrape /etc/samba/smb.conf, but.. yeesh.
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return new IPAddressCollection ();
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}
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}
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}
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}
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