diff --git a/wiki/ReleaseNotes.wiki b/wiki/ReleaseNotes.wiki
index 372467d0..c7574d67 100644
--- a/wiki/ReleaseNotes.wiki
+++ b/wiki/ReleaseNotes.wiki
@@ -18,7 +18,7 @@ The high-level changes since version 4.1 are:
 
 Known issues with 4.2:
  * the CORE 4.2 source tarball fails to build on Fedora. <br>Fix this by changing this line in configure.ac: `AC_SUBST(libev_CFLAGS,)` to `AC_SUBST(libev_CFLAGS, [-I/usr/include/libev])`<br>This was due to an attempt to remove pkg-config as a dependency, but has been fixed in SVN and newer.
-
+ * Fedora 15 does not add the hostname to the 127.0.0.1 localhost line of the `/etc/hosts` file, which causes CORE to print an error: "couldn't open socket: can't assign requested address" when the execute button is pressed.
  * [http://code.google.com/p/coreemu/issues/detail?id=39 issue 39] OSPF hellos become synchronized after 1 hr of running
  * [http://code.google.com/p/coreemu/issues/detail?id=56 issue 56] wait for services shutdown
  * [http://code.google.com/p/coreemu/issues/detail?id=63 issue 63] EMANE events not restricted to localhost lo device