diff --git a/acinclude.m4 b/acinclude.m4
index 6e679949ef..4890898cce 100644
--- a/acinclude.m4
+++ b/acinclude.m4
@@ -408,6 +408,9 @@ else
 		alpha*-dec-osf5.0*)
 			AFS_SYSNAME="alpha_dux50"
 			;;
+		alpha*-dec-osf5.1*)
+			AFS_SYSNAME="alpha_dux51"
+			;;
 		mips-sgi-irix6.5)
 			AFS_SYSNAME="sgi_65"
 			;;
diff --git a/src/config/Makefile.alpha_dux51.in b/src/config/Makefile.alpha_dux51.in
new file mode 100644
index 0000000000..f4f1d76b7e
--- /dev/null
+++ b/src/config/Makefile.alpha_dux51.in
@@ -0,0 +1,32 @@
+# Copyright 2000, International Business Machines Corporation and others.
+# All Rights Reserved.
+# 
+# This software has been released under the terms of the IBM Public
+# License.  For details, see the LICENSE file in the top-level source
+# directory or online at http://www.openafs.org/dl/license10.html
+
+AFS_OSTYPE = DUX
+
+MT_CC=cc
+XCFLAGS= -D_NO_PROTO -DOSF
+MT_CFLAGS=-D_REENTRANT=1 -pthread -DAFS_PTHREAD_ENV ${XCFLAGS}
+SHLIB_SUFFIX=so
+SHLIB_CFLAGS=
+SHLIB_LINKER=${CC} -all -shared -expect_unresolved "*"
+XLIBS=@LIB_AFSDB@
+MTLIBS=-pthread -lpthread -lmach -lexc -lc
+NON_SHARED=-non_shared
+TXLIBS= -lcurses
+LWP_OPTMZ=-O2
+OPTMZ=-O2
+DBG=-g3
+CP=cp
+RM=rm
+CSTATIC=-non_shared
+RANLIB=/bin/true
+INSTALL=${TOP_SRCDIR}/pinstall/pinstall
+
+#this is for the vol package
+FS_CONV_OSF40D         = fs_conv_dux40D
+install_FS_CONV_OSF40D = $(DESTDIR)${afssrvsbindir}/fs_conv_dux40D
+dest_FS_CONV_OSF40D    = $(DEST)/root.server/usr/afs/bin/fs_conv_dux40D
diff --git a/src/config/afs_sysnames.h b/src/config/afs_sysnames.h
index aaffb6a3e8..576c8de485 100644
--- a/src/config/afs_sysnames.h
+++ b/src/config/afs_sysnames.h
@@ -111,6 +111,7 @@
 #define SYS_NAME_ID_alpha_osf32c	1204
 #define SYS_NAME_ID_alpha_dux40		1205
 #define SYS_NAME_ID_alpha_dux50		1206
+#define SYS_NAME_ID_alpha_dux51		1206
 
 #define SYS_NAME_ID_ncrx86_20		1300
 #define SYS_NAME_ID_ncrx86_30		1301
diff --git a/src/config/param.alpha_dux51.h b/src/config/param.alpha_dux51.h
new file mode 100644
index 0000000000..f94dff57ec
--- /dev/null
+++ b/src/config/param.alpha_dux51.h
@@ -0,0 +1,119 @@
+/*
+ * Copyright 2000, International Business Machines Corporation and others.
+ * All Rights Reserved.
+ * 
+ * This software has been released under the terms of the IBM Public
+ * License.  For details, see the LICENSE file in the top-level source
+ * directory or online at http://www.openafs.org/dl/license10.html
+ */
+
+#ifndef	AFS_PARAM_H
+#define	AFS_PARAM_H
+
+#define	AFS_OSF_ENV	1
+#define	AFS_OSF20_ENV	1
+#define	AFS_OSF30_ENV	1
+#define	AFS_OSF32_ENV	1
+#define	AFS_OSF32C_ENV	1
+#define	AFS_DUX40_ENV	1
+#define	AFS_DUX50_ENV	1
+#define	AFS_DUX51_ENV	1
+#define	__alpha		1
+#define	AFS_ALPHA_ENV	1
+#define	AFS_DECOSF_ENV	1
+#define	AFS_64BIT_ENV	1
+
+#include <afs/afs_sysnames.h>
+
+#define AFS_VM_RDWR_ENV	1
+#define AFS_VFS_ENV	1
+#define AFS_GREEDY43_ENV	1
+#define AFS_ENV  	1
+#define AFS_MINPHYS_ENV	1
+#define CMUSTD_ENV	1
+
+#define AFS_SYSCALL	232
+#define AFS_MOUNT_AFS	13
+
+#ifndef	MOUNT_AFS
+#define	MOUNT_AFS AFS_MOUNT_AFS
+#endif
+#define SYS_NAME	"alpha_dux51"
+#define SYS_NAME_ID	SYS_NAME_ID_alpha_dux51
+
+#define AFS_HAVE_FFS            1       /* Use system's ffs. */
+#define AFS_HAVE_STATVFS	1	/* System supports statvfs */
+
+#define AFS_GCPAGS		1       /* if nonzero, garbage collect PAGs */
+
+#ifdef AFS_NAMEI_ENV
+#define AFS_64BIT_IOPS_ENV     1       /* needed for NAMEI... */
+#else
+#define AFS_3DISPARES   1       /* Utilize the 3 available disk inode spares */
+#endif
+
+#define AFS_USE_GETTIMEOFDAY 1  /* use gettimeofday to implement rx clock */
+
+#if	!defined(ASSEMBLER) && !defined(__LANGUAGE_ASSEMBLY__)
+#include <machine/endian.h>
+#if	BYTE_ORDER == BIG_ENDIAN
+#define	AFSBIG_ENDIAN		1
+#else
+#if	BYTE_ORDER == LITTLE_ENDIAN
+#define	AFSLITTLE_ENDIAN	1
+#else
+#error	machine/endian.h must define BYTE_ORDER!
+#endif
+#endif
+#endif	/* ! ASSEMBLER && ! __LANGUAGE_ASSEMBLY__ */
+
+#define NEARINODE_HINT  1 /* hint to ufs module to scatter inodes on disk*/
+#define nearInodeHash(volid, hval) {                          \
+                unsigned char*  ts = (unsigned char*)&(volid);\
+                for ((hval)=0; ts<(unsigned char*)&(volid)+sizeof(volid);ts++){\
+                    (hval) *= 173;                      \
+                    (hval) += *ts;                      \
+                }                                       \
+                }
+
+/* Extra kernel definitions (from kdefs file) */
+#ifdef _KERNEL
+#define AFS_GLOBAL_SUNLOCK        1
+#define	AFS_VFS34	1	/* What is VFS34??? */
+#define	AFS_SHORTGID	1	/* are group id's short? */
+#define	afsio_iov	uio_iov
+#define	afsio_iovcnt	uio_iovcnt
+#define	afsio_offset	uio_offset
+#define	afsio_seg	uio_segflg
+#define	afsio_resid	uio_resid
+#define	AFS_UIOSYS	UIO_SYSSPACE
+#define	AFS_UIOUSER	UIO_USERSPACE
+#define	AFS_CLBYTES	CLBYTES
+#define	osi_GetTime(x)	microtime(x)
+#define	AFS_KALLOC(x)	kalloc(x)
+#define	AFS_KFREE(x,y)	kfree(x,y)
+#define	v_count		v_usecount
+#define v_vfsp		v_mount
+#define vfs_bsize	m_stat.f_bsize
+#define vfs_fsid	m_stat.f_fsid
+#define va_nodeid	va_fileid
+#define vfs_vnodecovered m_vnodecovered
+#define direct		dirent
+#define vnode_t		struct vnode
+
+#define	VN_RELE(vp)	vrele(((struct vnode *)(vp)))
+#define	VN_HOLD(vp)	VREF(((struct vnode *)(vp)))
+
+#if	!defined(ASSEMBLER) && !defined(__LANGUAGE_ASSEMBLY__)
+enum vcexcl {NONEXCL, EXCL};
+
+#include <net/net_globals.h>
+
+#endif	/* ! ASSEMBLER & ! __LANGUAGE_ASSEMBLY__ */
+
+#define memset(A, B, S) bzero(A, S)
+#define memcpy(B, A, S) bcopy(A, B, S)
+#define memcmp(A, B, S) bcmp(A, B, S)
+#endif /* _KERNEL */
+
+#endif	/* AFS_PARAM_H */
diff --git a/src/config/param.alpha_dux51_usr.h b/src/config/param.alpha_dux51_usr.h
new file mode 100644
index 0000000000..7aa8d0aaa7
--- /dev/null
+++ b/src/config/param.alpha_dux51_usr.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2000, International Business Machines Corporation and others.
+ * All Rights Reserved.
+ * 
+ * This software has been released under the terms of the IBM Public
+ * License.  For details, see the LICENSE file in the top-level source
+ * directory or online at http://www.openafs.org/dl/license10.html
+ */
+
+#ifndef	AFS_PARAM_H
+#define	AFS_PARAM_H
+
+#define AFS_VFS_ENV	1
+/* Used only in vfsck code; is it needed any more???? */
+#define RXK_LISTENER_ENV	1
+#define AFS_USERSPACE_IP_ADDR	1
+#define AFS_GCPAGS		0       /* if nonzero, garbage collect PAGs */
+
+#define UKERNEL			1	/* user space kernel */
+#define AFS_GREEDY43_ENV	1	/* Used only in rx/rx_user.c */
+#define AFS_64BIT_ENV		1
+#define AFS_ENV			1
+#define AFS_USR_OSF_ENV		1
+#define AFS_USR_DUX40_ENV	1
+
+#include <afs/afs_sysnames.h>
+
+/*#define AFS_GLOBAL_SUNLOCK	1*/	/* For global locking */
+
+#define	AFS_3DISPARES		1	/* Utilize the 3 available disk inode 'spares' */
+#define	AFS_SYSCALL		232
+
+/* File system entry (used if mount.h doesn't define MOUNT_AFS */
+#define AFS_MOUNT_AFS	 1
+
+/* Machine / Operating system information */
+#define sys_alpha_dux40	1
+#define SYS_NAME	"alpha_dux51"
+#define SYS_NAME_ID	SYS_NAME_ID_alpha_dux51
+#define AFS_HAVE_FFS            1       /* Use system's ffs. */
+#define AFS_HAVE_STATVFS	0	/* System doesn't support statvfs */
+#define AFSLITTLE_ENDIAN        1
+
+/* Extra kernel definitions (from kdefs file) */
+#ifdef KERNEL
+#define	AFS_UIOFMODE		1	/* Only in afs/afs_vnodeops.c (afs_ustrategy) */
+#define	AFS_SYSVLOCK		1	/* sys v locking supported */
+/*#define	AFS_USEBUFFERS	1*/
+#define	afsio_iov	uio_iov
+#define	afsio_iovcnt	uio_iovcnt
+#define	afsio_offset	uio_offset
+#define	afsio_seg	uio_segflg
+#define	afsio_fmode	uio_fmode
+#define	afsio_resid	uio_resid
+#define	AFS_UIOSYS	1
+#define	AFS_UIOUSER	UIO_USERSPACE
+#define	AFS_CLBYTES	MCLBYTES
+#define	AFS_MINCHANGE	2
+#define	VATTR_NULL	usr_vattr_null
+#endif /* KERNEL */
+#define	AFS_DIRENT	
+#ifndef CMSERVERPREF
+#define CMSERVERPREF
+#endif
+#define	ROOTINO		UFSROOTINO
+
+#endif /* AFS_PARAM_H */
diff --git a/src/venus/test/owntest.c b/src/venus/test/owntest.c
index 188719f753..f894c7c4fe 100644
--- a/src/venus/test/owntest.c
+++ b/src/venus/test/owntest.c
@@ -36,11 +36,15 @@ char **argv; {
     pn = argv[1];
     printf("Starting tests on %s.\n", pn);
     code = chmod(pn, 0444);
-    if (code<0)
-	return perror("chmod to RO");
+    if (code<0) {
+        perror("chmod to RO");
+	return 1;
+    }
     code = chmod(pn, 0666);
-    if (code<0)
-	return perror("chmod back to RW");
+    if (code<0) {
+        perror("chmod back to RW");
+        return 1;
+    }
     gettimeofday(&tv[0], (char *) 0);
     gettimeofday(&tv[1], (char *) 0);
     tv[0].tv_sec -= 10000;
@@ -48,11 +52,15 @@ char **argv; {
     tv[1].tv_sec -= 20000;
     tv[1].tv_usec = 0;
     code = utimes(pn, tv);
-    if (code<0)
-	return perror("utimes");
+    if (code<0) {
+        perror("utimes");
+        return 1;
+    }
     code = stat(pn, &tstat);
-    if (code<0)
-	return perror("stat");
+    if (code<0) {
+        perror("stat");
+	return 1;
+    }
     if (tstat.st_mtime != tv[1].tv_sec) {
 	printf("modtime didn't stick\n");
 	exit(1);