Index: mcs/class/System/macos_networkinfo.sources
--- mcs/class/System/macos_networkinfo.sources.orig
+++ mcs/class/System/macos_networkinfo.sources
@@ -1,4 +1,5 @@
 System.Net.NetworkInformation/FreeBSDNetworkInterface.cs
+System.Net.NetworkInformation/OpenBSDNetworkInterface.cs
 System.Net.NetworkInformation/MacOsIPInterfaceProperties.cs
 System.Net.NetworkInformation/MacOsIPv4InterfaceProperties.cs
 System.Net.NetworkInformation/MacOsIPv4InterfaceStatistics.cs
