>Docker がNATを行っているとしたら,やっぱり難しいですね.
なるほど・・・Docker内で動かすにはちょっと難しい感じですね^^;
 
>それより,Docker を動かす前の OpenSim のエラーはどんな感じでしたか?
APPLICATION EXCEPTION DETECTED: System.UnhandledExceptionEventArgs
 
Exception: System.TypeInitializationException: An exception was thrown by the type initializer for System.Drawing.GDIPlus ---> System.DllNotFoundException: libgdiplus.so
  at (wrapper managed-to-native) System.Drawing.GDIPlus:GdiplusStartup (ulong&,System.Drawing.GdiplusStartupInput&,System.Drawing.GdiplusStartupOutput&)
  at System.Drawing.GDIPlus..cctor () [0x00000] in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at System.Drawing.Bitmap..ctor (Int32 width, Int32 height, PixelFormat format) [0x00000] in <filename unknown>:0 
  at (wrapper remoting-invoke-with-check) System.Drawing.Bitmap:.ctor (int,int,System.Drawing.Imaging.PixelFormat)
  at OpenSim.Region.CoreModules.Scripting.VectorRender.VectorRenderModule.Initialise (IConfigSource config) [0x00000] in <filename unknown>:0 
  at OpenSim.ApplicationPlugins.RegionModulesController.RegionModulesControllerPlugin.Initialise (OpenSim.OpenSimBase openSim) [0x00000] in <filename unknown>:0 
  at OpenSim.ApplicationPluginInitialiser.Initialise (IPlugin plugin) [0x00000] in <filename unknown>:0 
  at OpenSim.Framework.PluginLoader`1[OpenSim.IApplicationPlugin].Load () [0x00000] in <filename unknown>:0 
  at OpenSim.Framework.PluginLoader`1[OpenSim.IApplicationPlugin].Load (System.String extpoint) [0x00000] in <filename unknown>:0 
  at OpenSim.OpenSimBase.LoadPlugins () [0x00000] in <filename unknown>:0 
  at OpenSim.OpenSimBase.StartupSpecific () [0x00000] in <filename unknown>:0 
  at OpenSim.OpenSim.StartupSpecific () [0x00000] in <filename unknown>:0 
  at OpenSim.Framework.Servers.BaseOpenSimServer.Startup () [0x00000] in <filename unknown>:0 
  at OpenSim.Application.Main (System.String[] args) [0x00000] in <filename unknown>:0 
InnerException: System.DllNotFoundException: libgdiplus.so
  at (wrapper managed-to-native) System.Drawing.GDIPlus:GdiplusStartup (ulong&,System.Drawing.GdiplusStartupInput&,System.Drawing.GdiplusStartupOutput&)
  at System.Drawing.GDIPlus..cctor () [0x00000] in <filename unknown>:0 
 
Application is terminating: True
 
[ERROR] FATAL UNHANDLED EXCEPTION: System.TypeInitializationException: An exception was thrown by the type initializer for System.Drawing.GDIPlus ---> System.DllNotFoundException: libgdiplus.so
  at (wrapper managed-to-native) System.Drawing.GDIPlus:GdiplusStartup (ulong&,System.Drawing.GdiplusStartupInput&,System.Drawing.GdiplusStartupOutput&)
  at System.Drawing.GDIPlus..cctor () [0x00000] in <filename unknown>:0 
  --- End of inner exception stack trace ---
  at System.Drawing.Bitmap..ctor (Int32 width, Int32 height, PixelFormat format) [0x00000] in <filename unknown>:0 
  at (wrapper remoting-invoke-with-check) System.Drawing.Bitmap:.ctor (int,int,System.Drawing.Imaging.PixelFormat)
  at OpenSim.Region.CoreModules.Scripting.VectorRender.VectorRenderModule.Initialise (IConfigSource config) [0x00000] in <filename unknown>:0 
  at OpenSim.ApplicationPlugins.RegionModulesController.RegionModulesControllerPlugin.Initialise (OpenSim.OpenSimBase openSim) [0x00000] in <filename unknown>:0 
  at OpenSim.ApplicationPluginInitialiser.Initialise (IPlugin plugin) [0x00000] in <filename unknown>:0 
  at OpenSim.Framework.PluginLoader`1[OpenSim.IApplicationPlugin].Load () [0x00000] in <filename unknown>:0 
  at OpenSim.Framework.PluginLoader`1[OpenSim.IApplicationPlugin].Load (System.String extpoint) [0x00000] in <filename unknown>:0 
  at OpenSim.OpenSimBase.LoadPlugins () [0x00000] in <filename unknown>:0 
  at OpenSim.OpenSimBase.StartupSpecific () [0x00000] in <filename unknown>:0 
  at OpenSim.OpenSim.StartupSpecific () [0x00000] in <filename unknown>:0 
  at OpenSim.Framework.Servers.BaseOpenSimServer.Startup () [0x00000] in <filename unknown>:0 
  at OpenSim.Application.Main (System.String[] args) [0x00000] in <filename unknown>:0
 
以上の様なエラーが出ました。「GDIPlus」が正しく読み込まれていない感じのようです。
>mono のバージョンによっては,OpenSim がDLLの読み込みに失敗して起動しないことがあります.
monoのバージョンは4.0.5です。
dnfコマンド(yumの新しいパッケージ管理コマンド)ではダウングレードはできない状態でした・・・。
一度mono関係を削除して、ソースからコンパイルして入れなおした方がいい感じでしょうか・・・?^^;