diff --git a/doc/updating-RHL/RHL90-version-emulab.patch b/doc/updating-RHL/RHL90-version-emulab.patch
new file mode 100644
index 0000000000000000000000000000000000000000..a56ab650a3e8428df7dcb42f6ab15c365bc2f015
--- /dev/null
+++ b/doc/updating-RHL/RHL90-version-emulab.patch
@@ -0,0 +1,11 @@
+--- linux-2.4.20-31.9/Makefile	2004-04-13 16:20:42.000000000 -0600
++++ linux-2.4.20-31.9emulab/Makefile	2004-08-21 20:00:12.000000000 -0600
+@@ -1,7 +1,7 @@
+ VERSION = 2
+ PATCHLEVEL = 4
+ SUBLEVEL = 20
+-EXTRAVERSION = -31.9custom
++EXTRAVERSION = -31.9emulab
+ 
+ KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
+ 
diff --git a/doc/updating-RHL/RHL90-version-linkdelay.patch b/doc/updating-RHL/RHL90-version-linkdelay.patch
new file mode 100644
index 0000000000000000000000000000000000000000..03caebf9b64c2c7c0a00948f42e32e30f52dbc25
--- /dev/null
+++ b/doc/updating-RHL/RHL90-version-linkdelay.patch
@@ -0,0 +1,11 @@
+--- linux-2.4.20-31.9/Makefile	2004-04-13 16:20:42.000000000 -0600
++++ linux-2.4.20-31.9linkdelay/Makefile	2004-08-21 20:00:12.000000000 -0600
+@@ -1,7 +1,7 @@
+ VERSION = 2
+ PATCHLEVEL = 4
+ SUBLEVEL = 20
+-EXTRAVERSION = -31.9custom
++EXTRAVERSION = -31.9linkdelay
+ 
+ KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
+