diff --git a/man/systemd-udevd.service.xml b/man/systemd-udevd.service.xml
index 1bc86469be..3107fb7ce9 100644
--- a/man/systemd-udevd.service.xml
+++ b/man/systemd-udevd.service.xml
@@ -234,13 +234,14 @@
           <citerefentry><refentrytitle>systemd.link</refentrytitle><manvolnum>5</manvolnum></citerefentry>
           for more details. When the MAC address is specified, the policies are applied to the
           interface which has the address. When no MAC address is specified, the policies are applied
-          to all interfaces. This kernel command line argument can be specified multiple times. This
-          argument is not directly read from <command>systemd-udevd</command>, but read and converted
-          to a .link file by <command>systemd-network-generator</command>. So, to make this argument
-          take effect, <filename>systemd-network-generator.service</filename> must be enabled and
-          started before starting <filename>systemd-udevd.service</filename>. See
-          <citerefentry><refentrytitle>systemd-network-generator.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>
-          for more details about the service.</para>
+          to all interfaces. This kernel command line argument can be specified multiple times.</para>
+
+          <para>This argument is not directly read by <command>systemd-udevd</command>, but is instead
+          converted to a .link file by
+          <citerefentry><refentrytitle>systemd-network-generator.service</refentrytitle><manvolnum>8</manvolnum></citerefentry>.
+          For this argument to take effect, <filename>systemd-network-generator.service</filename> must be
+          enabled.</para>
+
           <para>Example:
           <programlisting>net.ifname-policy=keep,kernel,path,slot,onboard,01:23:45:67:89:ab
 net.ifname-policy=keep,kernel,path,slot,onboard,mac</programlisting>
diff --git a/presets/90-systemd.preset b/presets/90-systemd.preset
index 8a1a08210c..25936d8f57 100644
--- a/presets/90-systemd.preset
+++ b/presets/90-systemd.preset
@@ -18,6 +18,7 @@ enable machines.target
 enable getty@.service
 enable systemd-timesyncd.service
 enable systemd-networkd.service
+enable systemd-network-generator.service
 enable systemd-resolved.service
 enable systemd-homed.service
 enable systemd-userdbd.socket
@@ -37,7 +38,6 @@ disable exit.target
 disable systemd-networkd-wait-online.service
 disable systemd-time-wait-sync.service
 disable systemd-boot-check-no-failures.service
-disable systemd-network-generator.service
 disable proc-sys-fs-binfmt_misc.mount
 
 disable syslog.socket
diff --git a/units/systemd-networkd.service.in b/units/systemd-networkd.service.in
index 6acce036df..95dd2665b2 100644
--- a/units/systemd-networkd.service.in
+++ b/units/systemd-networkd.service.in
@@ -56,6 +56,10 @@ WantedBy=multi-user.target
 Also=systemd-networkd.socket
 Alias=dbus-org.freedesktop.network1.service
 
+# The output from this generator is used by udevd and networkd. Enable it by
+# default when enabling systemd-networkd.service.
+Also=systemd-network-generator.service
+
 # We want to enable systemd-networkd-wait-online.service whenever this service
 # is enabled. systemd-networkd-wait-online.service has
 # WantedBy=network-online.target, so enabling it only has an effect if