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@@ -41,6 +41,16 @@ This is not an error, but a warning. Tinc 1.0 and later try to create IPv6 socke
 
 ## Platform specific questions
 
+### Error while writing to Generic BSD tap device /dev/tap0: Input/output error on MacOSX or *BSD
+
+tinc needs to be running *before* configuring the network interface.
+Try assigning a static ip address, while tinc is running:
+
+    ifconfig tap0 <ip address>
+
+If you are still having trouble, check that you have the tun/tap devices installed and configured for your kernel.
+
+
 ### No TAP-Win32 interface under Windows XP SP2
 
 Because of changes in Windows XP since SP2, the TAP-Win32 driver distributed with the tinc-1.0.2 installer doesn't work correctly. Remove all tap devices (use deltapall.bat) and install tinc 1.0.4.