diff --git a/OpenSim/Framework/General/Types/RegionInfo.cs b/OpenSim/Framework/General/Types/RegionInfo.cs
index a216b52867..c3479184d9 100644
--- a/OpenSim/Framework/General/Types/RegionInfo.cs
+++ b/OpenSim/Framework/General/Types/RegionInfo.cs
@@ -210,9 +210,10 @@ namespace OpenSim.Framework.Types
 
                 this.DataStore = GetString(configData, "Datastore", "localworld.yap", "Filename for local storage");
                 
-                IPAddress internalAddress = GetIPAddress(configData, "InternalIPAddress", "0.0.0.0", "Internal IP Address for UDP client connections");
+                string internalAddress = GetString(configData, "InternalIPAddress", "0.0.0.0", "Internal IP Address for UDP client connections").ToString();
                 int internalPort = GetIPPort(configData, "InternalIPPort", "9000", "Internal IP Port for UDP client connections");
-                m_internalEndPoint = new IPEndPoint(internalAddress, internalPort);
+                IPAddress internalIPAddress = Dns.GetHostByName(internalAddress).AddressList[0];
+                m_internalEndPoint = new IPEndPoint(internalIPAddress, internalPort);
 
                 m_externalHostName = GetString(configData, "ExternalHostName", "127.0.0.1", "External Host Name");
 
diff --git a/OpenSim/Grid/GridServer/GridManager.cs b/OpenSim/Grid/GridServer/GridManager.cs
index 22bffa0476..b3ba4e5d24 100644
--- a/OpenSim/Grid/GridServer/GridManager.cs
+++ b/OpenSim/Grid/GridServer/GridManager.cs
@@ -28,6 +28,7 @@
 using System;
 using System.Collections;
 using System.Collections.Generic;
+using System.Net;
 using System.Reflection;
 using System.Xml;
 using libsecondlife;
@@ -329,7 +330,7 @@ namespace OpenSim.Grid.GridServer
                 foreach (KeyValuePair<ulong, SimProfileData> aSim in neighbours)
                 {
                     NeighbourBlock = new Hashtable();
-                    NeighbourBlock["sim_ip"] = aSim.Value.serverIP.ToString();
+                    NeighbourBlock["sim_ip"] = Dns.GetHostByName(aSim.Value.serverIP.ToString()).AddressList[0].ToString();
                     NeighbourBlock["sim_port"] = aSim.Value.serverPort.ToString();
                     NeighbourBlock["region_locx"] = aSim.Value.regionLocX.ToString();
                     NeighbourBlock["region_locy"] = aSim.Value.regionLocY.ToString();
@@ -348,7 +349,7 @@ namespace OpenSim.Grid.GridServer
                             neighbour = getRegion(Helpers.UIntsToLong((uint)((TheSim.regionLocX + x) * 256), (uint)(TheSim.regionLocY + y) * 256));
 
                             NeighbourBlock = new Hashtable();
-                            NeighbourBlock["sim_ip"] = neighbour.serverIP;
+                            NeighbourBlock["sim_ip"] = Dns.GetHostByName(neighbour.serverIP).AddressList[0].ToString();
                             NeighbourBlock["sim_port"] = neighbour.serverPort.ToString();
                             NeighbourBlock["region_locx"] = neighbour.regionLocX.ToString();
                             NeighbourBlock["region_locy"] = neighbour.regionLocY.ToString();
@@ -407,7 +408,7 @@ namespace OpenSim.Grid.GridServer
             else
             {
                 Console.WriteLine("found region");
-                responseData["sim_ip"] = simData.serverIP;
+                responseData["sim_ip"] = Dns.GetHostByName(simData.serverIP).AddressList[0].ToString();
                 responseData["sim_port"] = simData.serverPort.ToString();
                 responseData["http_port"] = simData.httpPort.ToString();
                 responseData["remoting_port"] = simData.remotingPort.ToString();
@@ -567,7 +568,7 @@ namespace OpenSim.Grid.GridServer
                 respstring += "<sim>";
                 respstring += "<uuid>" + TheSim.UUID.ToString() + "</uuid>";
                 respstring += "<regionname>" + TheSim.regionName + "</regionname>";
-                respstring += "<sim_ip>" + TheSim.serverIP + "</sim_ip>";
+                respstring += "<sim_ip>" + Dns.GetHostByName(TheSim.serverIP).AddressList[0].ToString() + "</sim_ip>";
                 respstring += "<sim_port>" + TheSim.serverPort.ToString() + "</sim_port>";
                 respstring += "<region_locx>" + TheSim.regionLocX.ToString() + "</region_locx>";
                 respstring += "<region_locy>" + TheSim.regionLocY.ToString() + "</region_locy>";
diff --git a/OpenSim/Grid/UserServer/UserManager.cs b/OpenSim/Grid/UserServer/UserManager.cs
index bb7d673179..74d2248c00 100644
--- a/OpenSim/Grid/UserServer/UserManager.cs
+++ b/OpenSim/Grid/UserServer/UserManager.cs
@@ -27,6 +27,7 @@
 */
 using System;
 using System.Collections;
+using System.Net;
 using Nwc.XmlRpc;
 using OpenSim.Framework.Data;
 using OpenSim.Framework.UserManagement;
@@ -59,7 +60,7 @@ namespace OpenSim.Grid.UserServer
 
             // Destination
             Console.WriteLine("CUSTOMISERESPONSE: Region X: " + SimInfo.regionLocX + "; Region Y: " + SimInfo.regionLocY);
-            response.SimAddress = SimInfo.serverIP;
+            response.SimAddress = Dns.GetHostByName(SimInfo.serverIP).AddressList[0].ToString();
             response.SimPort = (Int32)SimInfo.serverPort;
             response.RegionX = SimInfo.regionLocX;
             response.RegionY = SimInfo.regionLocY;
diff --git a/OpenSim/Region/Communications/OGS1/OGS1GridServices.cs b/OpenSim/Region/Communications/OGS1/OGS1GridServices.cs
index 5ddad009f3..99e2b20e68 100644
--- a/OpenSim/Region/Communications/OGS1/OGS1GridServices.cs
+++ b/OpenSim/Region/Communications/OGS1/OGS1GridServices.cs
@@ -117,7 +117,7 @@ namespace OpenSim.Region.Communications.OGS1
                     uint regY = Convert.ToUInt32(n["y"]);
                     if ((regionInfo.RegionLocX != regX) || (regionInfo.RegionLocY != regY))
                     {
-                        string externalIpStr = (string)n["sim_ip"];
+                        string externalIpStr = Dns.GetHostByName((string)n["sim_ip"]).AddressList[0].ToString();
                         uint port = Convert.ToUInt32(n["sim_port"]);
                         string externalUri = (string)n["sim_uri"];