diff --git a/RELEASE_NOTES.md b/RELEASE_NOTES.md
index de0843c..4c76f0a 100644
--- a/RELEASE_NOTES.md
+++ b/RELEASE_NOTES.md
@@ -1,6 +1,9 @@
 # Release Notes
 
-## 1.1.16 - 2019-03-17
+## 1.2.0 - 2019-03-19
+* Update .NET Core to 2.2.3
+
+## 1.1.16 - 2019-03-1
 * Upgrade Raspbian
 
 ## 1.1.0 - 2019-01-20
diff --git a/src/Client/ReleaseNotes.fs b/src/Client/ReleaseNotes.fs
index 0d49e50..4eb9335 100644
--- a/src/Client/ReleaseNotes.fs
+++ b/src/Client/ReleaseNotes.fs
@@ -1,13 +1,16 @@
 module internal ReleaseNotes
 
-let Version = "1.1.16"
+let Version = "1.2.0"
 
 let IsPrerelease = false
 
 let Notes = """
 # Release Notes
 
-## 1.1.16 - 2019-03-17
+## 1.2.0 - 2019-03-19
+* Update .NET Core to 2.2.3
+
+## 1.1.16 - 2019-03-1
 * Upgrade Raspbian
 
 ## 1.1.0 - 2019-01-20
diff --git a/src/PiServer/PiServer.fs b/src/PiServer/PiServer.fs
index e7a7860..3e89085 100644
--- a/src/PiServer/PiServer.fs
+++ b/src/PiServer/PiServer.fs
@@ -104,19 +104,12 @@ let rfidLoop (dispatch,nodeServices:INodeServices) = task {
                         waiting <- false
 }
 
-let getMACAddress() = 
-    NetworkInterface.GetAllNetworkInterfaces()
-    |> Seq.filter (fun nic -> 
-        nic.OperationalStatus = OperationalStatus.Up &&
-        nic.NetworkInterfaceType <> NetworkInterfaceType.Loopback)
-    |> Seq.map (fun nic -> nic.GetPhysicalAddress().ToString())
-    |> Seq.tryHead
 
 let init nodeServices : Model * Cmd<Msg> =
     { Playing = None
       FirmwareUpdateInterval = TimeSpan.FromHours 1.
       UserID = 
-        getMACAddress()
+        Utils.getMACAddress()
         |> Option.defaultValue "9bb2b109-bf08-4342-9e09-f4ce3fb01c0f" // TODO: load from some config
       TagServer = "https://audio-hub.azurewebsites.net" // TODO: load from some config
       Volume = 0.5 // TODO: load from webserver
diff --git a/src/PiServer/Utils.fs b/src/PiServer/Utils.fs
new file mode 100644
index 0000000..70ddf1e
--- /dev/null
+++ b/src/PiServer/Utils.fs
@@ -0,0 +1,11 @@
+module Utils
+open System.Net.NetworkInformation
+
+
+let getMACAddress() = 
+    NetworkInterface.GetAllNetworkInterfaces()
+    |> Seq.filter (fun nic -> 
+        nic.OperationalStatus = OperationalStatus.Up &&
+        nic.NetworkInterfaceType <> NetworkInterfaceType.Loopback)
+    |> Seq.map (fun nic -> nic.GetPhysicalAddress().ToString())
+    |> Seq.tryHead
diff --git a/src/Server/Server.fsproj b/src/Server/Server.fsproj
index 6e20210..a971df1 100644
--- a/src/Server/Server.fsproj
+++ b/src/Server/Server.fsproj
@@ -10,6 +10,7 @@
         <Compile Include="Giraffe.Websocket.fs" />
         <Compile Include="..\Shared\Shared.fs" />
         <Compile Include="AzureTable.fs" />
+        <Compile Include="Utils.fs" />
         <Compile Include="TagHistorySocket.fs" />
         <Compile Include="Server.fs" />
     </ItemGroup>