diff --git a/xCAT-server/share/xcat/netboot/sles/compute.sle15.x86_64.pkglist b/xCAT-server/share/xcat/netboot/sles/compute.sle15.x86_64.pkglist
deleted file mode 100644
index 02d11dd47..000000000
--- a/xCAT-server/share/xcat/netboot/sles/compute.sle15.x86_64.pkglist
+++ /dev/null
@@ -1,50 +0,0 @@
-aaa_base
-coreutils
-bash
-dbus-1
-wicked
-device-mapper
-dracut
-nfs-kernel-server
-keyutils
-lvm2
-openssl
-dhcp-client
-openssh
-procps
-psmisc
-wget
-sysconfig
-rsyslog
-vim
-rsync
-timezone
-bc
-ntp
-gzip
-e2fsprogs
-parted
-binutils
-tar
-open-iscsi
-curl
-btrfsprogs
-cryptsetup
-dmraid
-mdadm
-multipath-tools
-gpg2
-which
-cifs-utils
-open-lldp
-fcoe-utils
-util-linux-systemd
-udev
-kernel-default
-kernel-firmware
-adaptec-firmware
-xz
-SLE_HPC-release
-insserv-compat
-net-tools-deprecated
-rsyslog
diff --git a/xCAT-server/share/xcat/netboot/sles/compute.sle15.x86_64.pkglist b/xCAT-server/share/xcat/netboot/sles/compute.sle15.x86_64.pkglist
new file mode 120000
index 000000000..0e114f64f
--- /dev/null
+++ b/xCAT-server/share/xcat/netboot/sles/compute.sle15.x86_64.pkglist
@@ -0,0 +1 @@
+compute.sle15.pkglist
\ No newline at end of file
diff --git a/xCAT-server/share/xcat/netboot/sles/dracut_033/xcat-prepivot.sh b/xCAT-server/share/xcat/netboot/sles/dracut_033/xcat-prepivot.sh
index 9471787b7..f52312e38 100755
--- a/xCAT-server/share/xcat/netboot/sles/dracut_033/xcat-prepivot.sh
+++ b/xCAT-server/share/xcat/netboot/sles/dracut_033/xcat-prepivot.sh
@@ -153,11 +153,11 @@ function getdevfrommac() {
     done
 }
 
-for lf in /tmp/dhclient.*.lease; do
-    netif=${lf#*.}
-    netif=${netif%.*}
-    cp $lf  "$NEWROOT/var/lib/dhclient/dhclient-$netif.leases"
-done
+bootif=$(ls /tmp/net.*.conf|sed -e s/.*net\.// -e s/\.conf//)
+cat <<EOF >  $NEWROOT/etc/sysconfig/network/ifcfg-$bootif
+BOOTPROTO='dhcp'
+STARTMODE='auto'
+EOF
 
 if [ -f $NEWROOT/etc/hostname ]; then
     echo `hostname -s` > $NEWROOT/etc/hostname
diff --git a/xCAT-server/share/xcat/netboot/sles/dracut_033/xcatroot b/xCAT-server/share/xcat/netboot/sles/dracut_033/xcatroot
index a1f39ac71..4b6c9aeaf 100755
--- a/xCAT-server/share/xcat/netboot/sles/dracut_033/xcatroot
+++ b/xCAT-server/share/xcat/netboot/sles/dracut_033/xcatroot
@@ -295,12 +295,12 @@ function getdevfrommac() {
 
 
 if [ -z $STATEMNT ]; then
-  for lf in /tmp/dhclient.*.lease; do
-    netif=${lf#*.}
-    netif=${netif%.*}
-    cp $lf  "$NEWROOT/var/lib/dhclient/dhclient-$netif.leases"
-    [ "$xcatdebugmode" > "0" ] && logger -t $log_label -p debug "saving $NEWROOT/var/lib/dhclient/dhclient-$netif.leases"
-  done
+  bootif=$(ls /tmp/net.*.conf|sed -e s/.*net\.// -e s/\.conf//)
+  cat <<EOF >  $NEWROOT/etc/sysconfig/network/ifcfg-$bootif
+BOOTPROTO='dhcp'
+STARTMODE='auto'
+EOF
+  [ "$xcatdebugmode" > "0" ] && logger -t $log_label -p debug "saving $NEWROOT/etc/sysconfig/network/ifcfg-$bootif"
 
   if [ ! -z "$ifname" ]; then
     MACX=${ifname#*:}
diff --git a/xCAT-server/share/xcat/netboot/sles/genimage b/xCAT-server/share/xcat/netboot/sles/genimage
index 5792b3c6c..049c1b681 100755
--- a/xCAT-server/share/xcat/netboot/sles/genimage
+++ b/xCAT-server/share/xcat/netboot/sles/genimage
@@ -72,6 +72,31 @@ sub xdie {
     die @_;
 }
 
+sub umount {
+    # some rpms mounts the imageroot/proc on the /proc, need to release it,
+    # otherwise got kernal panic when installing
+    # sometimes, the proc fs is not mounted, so one warning/error message will display,
+    # and I add one check point here.
+    my $MFD;
+    open MFD, "/proc/mounts";
+    my @lines = <MFD>;
+    close MFD;
+
+    my $ret = grep m{$rootimg_dir/proc}, @lines;
+    if ($ret > 0) {
+        system("umount -l $rootimg_dir/proc");
+    }
+    $ret = grep m{$rootimg_dir/sys}, @lines;
+    if ($ret > 0) {
+        system("umount -l $rootimg_dir/sys");
+    }
+}
+
+# Make sure we clean up all mounts everytime
+END {
+    umount();
+}
+
 #-- fetch current version form CVS (overwrite locally changed versions)
 # if (opendir(CVS,"$pathtofiles/CVS")){
 #   close CVS;
@@ -203,7 +228,7 @@ unless (grep /af_packet/, @ndrivers) {
 }
 
 my $osver_host;
-if (`grep VERSION /etc/os-release` =~ /VERSION = (\d+)/) {
+if (`grep VERSION /etc/os-release` =~ /VERSION="(\d+)/) {
     $osver_host = $1;
 } else {
     $osver_host = 11;
@@ -225,26 +250,32 @@ unless ($onlyinitrd) {
 
     mkpath "$rootimg_dir/etc";
     mkpath "$rootimg_dir/dev";
+    mkpath "$rootimg_dir/proc";
+    mkpath "$rootimg_dir/sys";
+
+    #needed for newer versions of the SLE permissions RPM. See: https://github.com/openSUSE/permissions/commit/2d0ef5d55b30f72322d18951214353ecfd9c4245
+    system "mount -t proc proc $rootimg_dir/proc";
+    #Create /sys to have /sys/kernel/fscaps. Fixes: "Warning: running kernel does not support fscaps"
+    system "mount -o bind /sys $rootimg_dir/sys";
 
     #system "mount -o bind /dev $rootimg_dir/dev";
     unless (-e "$rootimg_dir/dev/zero") {
-        system "mknod $rootimg_dir/dev/zero c 1 5";
+        system "mknod -m 0666 $rootimg_dir/dev/zero c 1 5";
     }
     unless (-e "$rootimg_dir/dev/null") {
-        system "mknod $rootimg_dir/dev/null c 1 3"; #that's neccessary for SLES11
+        system "mknod -m 0666 $rootimg_dir/dev/null c 1 3"; #that's neccessary for SLES11+
     }
-
     unless (-e "$rootimg_dir/dev/random") {
-        system "mknod $rootimg_dir/dev/random c 1 8"; #that's neccessary for SLES11
+        system "mknod -m 0666 $rootimg_dir/dev/random c 1 8"; #that's neccessary for SLES11+
     }
     unless (-e "$rootimg_dir/dev/urandom") {
-        system "mknod $rootimg_dir/dev/urandom c 1 9"; #that's neccessary for SLES11
+        system "mknod -m 0666 $rootimg_dir/dev/urandom c 1 9"; #that's neccessary for SLES11+
     }
 
     for (my $i = 0 ; $i <= 12 ; $i++)
     {
         unless (-e "$rootimg_dir/dev/tty$i") {
-            system "mknod $rootimg_dir/dev/tty$i c 4 $i"; #that's neccessary for SLES11
+            system "mknod $rootimg_dir/dev/tty$i c 4 $i"; #that's neccessary for SLES11+
         }
     }
 
@@ -397,10 +428,12 @@ unless ($onlyinitrd) {
     #my $yumcmd = "yum -y -c /tmp/genimage.$$.yum.conf --installroot=$rootimg_dir --disablerepo=* ";
     #$yumcmd .= "install ";
     #mkpath("$rootimg_dir/var/lib/yum");
-    mkpath("$rootimg_dir/etc/");
-    my $passwdfile;
-    open($passwdfile, ">", "$rootimg_dir/etc/passwd");
-    print $passwdfile "root:x:0:0:root:/root:/bin/bash\n";
+    if (! -f "$rootimg_dir/etc/passwd") {
+        mkpath("$rootimg_dir/etc/");
+        my $passwdfile;
+        open($passwdfile, ">", "$rootimg_dir/etc/passwd");
+        print $passwdfile "root:x:0:0:root:/root:/bin/bash\n";
+    }
     my $yumcmd;
     if ($osver_host < 11) {
         $yumcmd = "zypper -R $rootimg_dir $non_interactive install ";
@@ -872,19 +905,8 @@ system("cd $rootimg_dir/usr/bin/; ln -s ../../bin/keyctl $rootimg_dir/usr/bin/ke
 
 # which is different from the Redhat family
 
-# some rpms mounts the imageroot/proc on the /proc, need to release it,
-# otherwise got kernal panic when installing
-# sometimes, the proc fs is not mounted, so one warning/error message will display,
-# and I add one check point here.
-my $MFD;
-open MFD, "/proc/mounts";
-my @lines = <MFD>;
-close MFD;
-
-my $ret = grep m{$rootimg_dir/proc}, @lines;
-if ($ret > 0) {
-    system("umount -l $rootimg_dir/proc");
-}
+# umount /proc and /sys from rootimg
+umount();
 
 # Load driver update disk, and copy them to the root image
 my @dd_drivers = &load_dd();
@@ -1953,7 +1975,7 @@ sub generic_post { # This function is meant to leave the image in a state approx
     }
 
     unlink("$rootimg_dir/dev/null");
-    system("mknod $rootimg_dir/dev/null c 1 3");
+    system("mknod -m 0666 $rootimg_dir/dev/null c 1 3");
     open($cfgfile, ">", "$rootimg_dir/etc/fstab");
     print $cfgfile "devpts  /dev/pts devpts   gid=5,mode=620 0 0\n";
     print $cfgfile "tmpfs   /dev/shm tmpfs    defaults       0 0\n";
@@ -1976,9 +1998,12 @@ sub generic_post { # This function is meant to leave the image in a state approx
     print $cfgfile "NETWORKING=yes\n";
     close($cfgfile);
 
-    open($cfgfile, ">", "$rootimg_dir/etc/resolv.conf");
-    print $cfgfile "#Dummy resolv.conf to make boot cleaner";
-    close($cfgfile);
+    # SLE15 has a symlink to /run/netconfig/resolv.conf and does not need a dummy file
+    if (! -l "$rootimg_dir/etc/resolv.conf") {
+        open($cfgfile, ">", "$rootimg_dir/etc/resolv.conf");
+        print $cfgfile "#Dummy resolv.conf to make boot cleaner";
+        close($cfgfile);
+    }
 
     # Create the ifcfg-x file for diskless node. But keep the ONBOOT=no
     # to skip the break of nfs-based boot