#51 init mac component from config key

supervisor/startup.lua

@@ -95,6 +95,12 @@ local function main()
     -- mount connected devices
     ppm.mount_all()
 
+    -- message authentication init
+    if type(config.AUTH_KEY) == "string" then
+        network.init_mac(config.AUTH_KEY)
+    end
+
+    -- get modem
     local modem = ppm.get_wireless_modem()
     if modem == nil then
         println("startup> wireless modem not found")