diff --git a/powerpc-utils-1.3.9-fix-hexdump-format.patch b/powerpc-utils-1.3.9-fix-hexdump-format.patch
new file mode 100644
index 0000000..9b7b2bb
--- /dev/null
+++ b/powerpc-utils-1.3.9-fix-hexdump-format.patch
@@ -0,0 +1,39 @@
+diff -up powerpc-utils-1.3.9/scripts/hcnmgr.me powerpc-utils-1.3.9/scripts/hcnmgr
+--- powerpc-utils-1.3.9/scripts/hcnmgr.me	2021-11-11 11:38:33.293898966 +0100
++++ powerpc-utils-1.3.9/scripts/hcnmgr	2021-11-11 11:39:19.302587637 +0100
+@@ -168,7 +168,7 @@ search_dev() {
+ 	# Look at pci ethernet devices
+ 	for pci_dev in "$DT_PATH"/pci*; do
+ 		[ -d "$pci_dev" ] || continue
+-		index=$(hexdump -n 4 -e '/1 "%02x"' "$pci_dev"/ibm,my-drc-index)
++		index=$(hexdump -n 4 -ve '/1 "%02x"' "$pci_dev"/ibm,my-drc-index)
+ 		if [[ $index != "$1" ]]; then
+ 			continue
+ 		fi
+@@ -189,7 +189,7 @@ search_dev() {
+ 	hcnlog DEBUG "search vnic device with drc_index $1"
+ 	for dev in "$DT_PATH"/vdevice/vnic*; do
+ 		[ -d "$dev" ] || continue
+-		index=$(hexdump -n 4 -e '/1 "%02x"' "$dev"/ibm,my-drc-index)
++		index=$(hexdump -n 4 -ve '/1 "%02x"' "$dev"/ibm,my-drc-index)
+ 		if [[ $index == "$1" ]]; then
+ 			hcnlog DEBUG "found matching drc_index $index in $dev"
+ 			if [ -e "$dev"/ibm,hcn-id ] && get_dev_hcn "$dev"; then
+@@ -205,7 +205,7 @@ search_dev() {
+ 	hcnlog DEBUG "search ibmveth device with drc_index $1"
+ 	for dev in "$DT_PATH"/vdevice/l-lan*; do
+ 		[ -d "$dev" ] || continue
+-		index=$(hexdump -n 4 -e '/1 "%02x"' "$dev"/ibm,my-drc-index)
++		index=$(hexdump -n 4 -ve '/1 "%02x"' "$dev"/ibm,my-drc-index)
+ 		if [[ $index == "$1" ]]; then
+ 			hcnlog DEBUG "found matching drc_index $index in $dev"
+ 			if [ -e "$dev"/ibm,hcn-id ] && get_dev_hcn "$dev"; then
+@@ -233,7 +233,7 @@ get_dev_hcn() {
+ 	local dev=$1
+ 
+ 	hcnlog DEBUG "get_dev_hcn: enter $1"
+-	HCNID=$(hexdump -n 4 -e '/1 "%02x"' "$dev"/ibm,hcn-id)
++	HCNID=$(hexdump -n 4 -ve '/1 "%02x"' "$dev"/ibm,hcn-id)
+ 	MODE=$(tr -d '\0' <"$dev"/ibm,hcn-mode)
+ 	PHYSLOC=$(tr -d '\0' <"$dev"/ibm,loc-code)
+ 	DEVPATH=$1
diff --git a/powerpc-utils-support-vnic-as-backup-device-for-HNV.patch b/powerpc-utils-support-vnic-as-backup-device-for-HNV.patch
new file mode 100644
index 0000000..f93d611
--- /dev/null
+++ b/powerpc-utils-support-vnic-as-backup-device-for-HNV.patch
@@ -0,0 +1,22 @@
+diff -up powerpc-utils-1.3.8/scripts/hcnmgr.me powerpc-utils-1.3.8/scripts/hcnmgr
+--- powerpc-utils-1.3.8/scripts/hcnmgr.me	2021-11-11 11:10:37.800910318 +0100
++++ powerpc-utils-1.3.8/scripts/hcnmgr	2021-11-11 11:12:10.597104063 +0100
+@@ -21,7 +21,7 @@
+ #	   support live partition migration with SR_IOV
+ #
+ 
+-VERSION="1.0"
++VERSION="1.1"
+ PATH=$PATH:/bin:/usr/bin:/sbin:/usr/sbin
+ BOND_BASEPATH="/sys/class/net"
+ BONDOPTIONS="mode=1,miimon=100,fail_over_mac=2"
+@@ -630,6 +630,9 @@ fi
+ if ! nmcli --version >/dev/null 2>&1; then
+ 	err $E_ENETUNREACH
+ fi
++# HNV can support VNIC or Veth as backup device.
++# In the first HNV version 1.0, the vNIC as backup support was turned off
++# HNV VERSION greater than 1.0 starts to support vNIC as the backup device
+ if [[ $VERSION == "1.0" ]]; then
+ 	VNIC_SPT="OFF"
+ fi
diff --git a/powerpc-utils.spec b/powerpc-utils.spec
index c89e4b7..4fdcc02 100644
--- a/powerpc-utils.spec
+++ b/powerpc-utils.spec
@@ -1,6 +1,6 @@
 Name:           powerpc-utils
 Version:        1.3.9
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        PERL-based scripts for maintaining and servicing PowerPC systems
 
 License:        GPLv2
@@ -31,7 +31,10 @@ Patch3:         powerpc-utils-1.3.5-pseries_platform-man.patch
 Patch4:         powerpc-utils-1.3.5-update_flash_nv.patch
 Patch5:         powerpc-utils-1.3.8-install-man.patch
 Patch7:         powerpc-utils-1.3.8-hcnmgr.patch
-
+# enable support for vnic as backup device
+Patch8:         powerpc-utils-support-vnic-as-backup-device-for-HNV.patch
+# fixed hexdump format
+Patch9:         powerpc-utils-1.3.9-fix-hexdump-format.patch
 
 %description
 PERL-based scripts for maintaining and servicing PowerPC systems.
@@ -207,6 +210,11 @@ systemctl daemon-reload >/dev/null 2>&1 || :
 
 
 %changelog
+* Thu Nov 11 2021 Than Ngo <than@redhat.com> - 1.3.9-4
+- enable support vnic as backend for HNV interface
+- fixed hexdump format
+  Resolves: #2022235
+
 * Wed Oct 20 2021 Than Ngo <than@redhat.com> - 1.3.9-3
 - Resolves: #2014916, marked smt.state as %%ghost