diff --git a/gpxe/gpxe-0.9.7-undinet.patch b/gpxe/gpxe-0.9.7-undinet.patch
new file mode 100644
index 0000000..f843ee0
--- /dev/null
+++ b/gpxe/gpxe-0.9.7-undinet.patch
@@ -0,0 +1,12 @@
+diff -urN gpxe-0.9.7/src/arch/i386/drivers/net/undinet.c gpxe-0.9.7-undinet/src/arch/i386/drivers/net/undinet.c
+--- gpxe-0.9.7/src/arch/i386/drivers/net/undinet.c	2009-03-01 21:23:42.000000000 -0500
++++ gpxe-0.9.7-undinet/src/arch/i386/drivers/net/undinet.c	2010-01-26 10:06:31.000000000 -0500
+@@ -427,7 +427,7 @@
+ 							   "nop\n\t"
+ 							   "nop\n\t"
+ 							   "cli\n\t" ) : : );
+-			return;
++			//return;
+ 		}
+ 
+ 		/* Start ISR processing */
diff --git a/gpxe/xnba-undi.spec b/gpxe/xnba-undi.spec
index b34e1ad..3bc0df3 100644
--- a/gpxe/xnba-undi.spec
+++ b/gpxe/xnba-undi.spec
@@ -1,6 +1,6 @@
 Name:           xnba-undi
 Version:        0.9.7
-Release:        12
+Release:        13
 Summary:        xCAT Network Boot Agent for x86 PXE hosts
 Obsoletes:	gpxe-undi
 
@@ -23,6 +23,7 @@ Patch3: gpxe-0.9.7-ignorepackets.patch
 Patch4: gpxe-0.9.7-kvmworkaround.patch
 Patch5: gpxe-0.9.7-hdboot.patch
 Patch6: gpxe-0.9.7-xnbauserclass.patch
+Patch7: gpxe-0.9.7-undinet.patch
 
 %description
 The xCAT Network Boot Agent is a slightly modified version of gPXE.  It provides enhanced boot features for any UNDI compliant x86 host.  This includes iSCSI, http/ftp downloads, and gPXE script based booting.
@@ -37,6 +38,7 @@ The xCAT Network Boot Agent is a slightly modified version of gPXE.  It provides
 %patch4 -p1
 %patch5 -p1
 %patch6 -p1
+%patch7 -p1
 
 %build