diff --git a/acinclude.m4 b/acinclude.m4
index 14f70611aa..7876de6ffd 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -185,6 +185,7 @@ case $system in
 	  	 LINUX_INODE_SETATTR_RETURN_TYPE
 		 LINUX_KERNEL_LINUX_SYSCALL_H
 		 LINUX_KERNEL_SELINUX
+		 LINUX_KERNEL_SOCK_CREATE
 		 LINUX_NEED_RHCONFIG
 		 LINUX_RECALC_SIGPENDING_ARG_TYPE
 		 LINUX_SCHED_STRUCT_TASK_STRUCT_HAS_PARENT
@@ -296,6 +297,9 @@ case $system in
 		 if test "x$ac_cv_linux_kernel_is_selinux" = "xyes" ; then
 		  AC_DEFINE(LINUX_KERNEL_IS_SELINUX, 1, [define if your linux kernel uses SELinux features])
 		 fi
+		 if test "x$ac_cv_linux_kernel_sock_create_v" = "xyes" ; then
+		  AC_DEFINE(LINUX_KERNEL_SOCK_CREATE_V, 1, [define if your linux kernel uses 5 arguments for sock_create])
+		 fi
 		 if test "x$ac_linux_syscall" = "xyes" ; then
 		  AC_DEFINE(HAVE_KERNEL_LINUX_SYSCALL_H, 1, [define if your linux kernel has linux/syscall.h])
 		 fi
diff --git a/src/cf/linux-test3.m4 b/src/cf/linux-test3.m4
index 1f2afc0722..22d5b68a74 100644
--- a/src/cf/linux-test3.m4
+++ b/src/cf/linux-test3.m4
@@ -94,3 +94,19 @@ AC_TRY_COMPILE(
   ac_cv_linux_kernel_is_selinux=no)])
 AC_MSG_RESULT($ac_cv_linux_kernel_is_selinux)
 CPPFLAGS="$save_CPPFLAGS"])
+
+AC_DEFUN([LINUX_KERNEL_SOCK_CREATE],[
+AC_MSG_CHECKING(for 5th argument in sock_create found in some SELinux kernels)
+save_CPPFLAGS="$CPPFLAGS"
+CPPFLAGS="-I${LINUX_KERNEL_PATH}/include -D__KERNEL__ $CPPFLAGS"
+AC_CACHE_VAL(ac_cv_linux_kernel_sock_create_v,
+[
+AC_TRY_COMPILE(
+  [#include <linux/net.h>],
+  [
+  sock_create(0,0,0,0,0)
+  ],
+  ac_cv_linux_kernel_sock_create_v=yes,
+  ac_cv_linux_kernel_sock_create_v=no)])
+AC_MSG_RESULT($ac_cv_linux_kernel_sock_create_v)
+
diff --git a/src/rx/LINUX/rx_knet.c b/src/rx/LINUX/rx_knet.c
index 961ec7c965..46d93a625c 100644
--- a/src/rx/LINUX/rx_knet.c
+++ b/src/rx/LINUX/rx_knet.c
@@ -40,7 +40,7 @@ rxk_NewSocketHost(afs_uint32 ahost, short aport)
     /* We need a better test for this. if you need it back, tell us
      * how to detect it. 
      */
-#if 0/*def LINUX_KERNEL_IS_SELINUX*/
+#ifdef LINUX_KERNEL_SOCK_CREATE_V
     code = sock_create(AF_INET, SOCK_DGRAM, IPPROTO_UDP, &sockp, 0);
 #else
     code = sock_create(AF_INET, SOCK_DGRAM, IPPROTO_UDP, &sockp);