diff --git a/systemd.spec b/systemd.spec
index 5a8ce37..cd4a4fa 100644
--- a/systemd.spec
+++ b/systemd.spec
@@ -27,7 +27,7 @@
 Name:          systemd
 Epoch:         2
 Version:       248
-Release:       2mamba
+Release:       3mamba
 Summary:       A system and service manager compatible with SysV and LSB init scripts
 Group:         System/Configuration
 Vendor:        openmamba
@@ -99,6 +99,7 @@ BuildRequires: libselinux-devel
 BuildRequires: libz-devel
 BuildRequires: libzstd-devel
 ## AUTOBUILDREQ-END
+BuildRequires: kmod >= 28-3mamba
 BuildRequires: vala-tools
 BuildRequires: meson
 BuildRequires: ninja
@@ -330,7 +331,7 @@ install -d -m0755 %{buildroot}%{_prefix}/lib/repart.d
 :
 
 %post core
-if [ "$1" -ge 1 ]; then
+if [ $1 -ge 1 ]; then
    # causes systemd not to boot since 219
    sed -i "/\/proc\/bus\/usb/d" /etc/fstab
    # SYSV5 -> Systemd migration
@@ -379,6 +380,33 @@ if [ "$1" -ge 1 ]; then
    # Configure libnss_myhostanme.so resolver
    grep "^hosts:.* myhostname" /etc/nsswitch.conf &>/dev/null || \
       sed -i "s|\(^hosts:.*files\)|\1 myhostname|" /etc/nsswitch.conf
+	  
+   systemctl daemon-reexec &>/dev/null || {
+      # From Fedora:
+	  # systemd v239 had bug #9553 in D-Bus authentication of the private socket,
+	  # which was later fixed in v240 by #9625.
+      # To work around this issue, let's fall back to using a `kill -TERM 1` to	
+      # re-execute the daemon when the `systemctl daemon-reexec` call fails.
+      if [ $1 -gt 1 ] && [ -d /run/systemd/system ] ; then
+         kill -TERM 1 &>/dev/null || :	
+      fi
+   }
+fi
+if [ $1 -eq 1 ]; then
+   systemctl preset-all &>/dev/null || :	
+   systemctl --global preset-all &>/dev/null || :
+   # From Fedora:	
+   # Create /etc/resolv.conf symlink.	
+   # We would also create it using tmpfiles, but let's do this here
+   # too before NetworkManager gets a chance. (systemd-tmpfiles invocation above
+   # does not do this, because it's marked with ! and we don't specify --boot.)	
+   if test -d /run/systemd/system/ &&
+      systemctl -q is-enabled systemd-resolved.service &>/dev/null &&	
+      ! mountpoint /etc/resolv.conf &>/dev/null &&	
+      ! systemd-analyze cat-config systemd/resolved.conf 2>/dev/null | \
+        grep -qE '^DNSStubListener\s*=\s*([nN][oO]?|[fF]|[fF][aA][lL][sS][eE]|0|[oO][fF][fF])$'; then
+      ln -fsv ../run/systemd/resolve/stub-resolv.conf /etc/resolv.conf
+   fi
 fi
 :
 
@@ -390,6 +418,22 @@ if [ $1 -eq 0 ]; then
 fi
 :
 
+%triggerun core -- systemd-core <= 2:248-2mamba
+# From Fedora
+# This is for upgrades from previous versions before systemd-resolved became the default.
+systemctl --no-reload preset systemd-resolved.service &>/dev/null || :	
+if systemctl -q is-enabled systemd-resolved.service &>/dev/null; then	
+  systemctl -q is-enabled NetworkManager.service 2>/dev/null && \
+  ! test -L /etc/resolv.conf 2>/dev/null && \
+  ! mountpoint /etc/resolv.conf &>/dev/null && \
+  grep -q 'Generated by NetworkManager' /etc/resolv.conf 2>/dev/null && \	
+  echo -e '/etc/resolv.conf was generated by NetworkManager.\nRemoving it to let systemd-resolved manage this file.' && \	
+  mv -v /etc/resolv.conf /etc/resolv.conf.orig-with-nm && \
+  ln -sv ../run/systemd/resolve/stub-resolv.conf /etc/resolv.conf 2>/dev/null || :	
+  systemctl start systemd-resolved.service &>/dev/null || :
+fi
+:
+
 %triggerpostun core -- systemd-core < 2:248
 # /bin and /sbin are removed during old filesystem postun
 [ -e /lib/systemd ] || ln -s ../usr/lib/systemd /lib/systemd
@@ -398,8 +442,8 @@ fi
 %posttrans core
 if [ $1 -ge 1 ]; then
 
-[ -L /lib/systemd ] || {
-  # /lib/system -> /usr/lib/system
+[ ! -L /lib -a ! -L /lib/systemd ] && {
+  # Migrate /lib/system -> /usr/lib/system
   for d in systemd; do
    [ -L /lib/$d ] && continue
    echo "Migrating /lib/$d to /usr/lib/$d..."
@@ -529,8 +573,8 @@ groupadd render -g %{group_render} 2>/dev/null
 :
 
 %posttrans -n udev
-[ -L /lib/udev ] || {
-  # /lib/udev -> /usr/lib/udev migration
+[ ! -L /lib -a ! -L /lib/udev ] && {
+  # Migrate /lib/udev -> /usr/lib/udev migration
   for d in udev; do
    [ -L /lib/$d ] && continue
    echo "Migrating /lib/$d to /usr/lib/$d..."
@@ -806,6 +850,9 @@ systemctl daemon-reload &>/dev/null || :
 %{_libdir}/pkgconfig/libudev.pc
 
 %changelog
+* Thu Apr 22 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 248-3mamba
+- enable systemd-resolved and create /etc/resolve.conf as symlink
+
 * Tue Apr 13 2021 Silvan Calarco <silvan.calarco@mambasoft.it> 248-2mamba
 - perform migration in posttrans insted of pre of all new files get removed