diff --git a/systemd/journald.conf b/systemd/journald.conf
index 8785e81..8e22414 100644
--- a/systemd/journald.conf
+++ b/systemd/journald.conf
@@ -44,6 +44,7 @@ MaxFileSec=1day
 #MaxLevelKMsg=notice
 #MaxLevelConsole=info
 #MaxLevelWall=emerg
+#MaxLevelSocket=debug
 #LineMax=48K
 #ReadKMsg=yes
 #Audit=yes
diff --git a/systemd/networkd.conf b/systemd/networkd.conf
index 2809236..36b44a4 100644
--- a/systemd/networkd.conf
+++ b/systemd/networkd.conf
@@ -21,13 +21,23 @@ SpeedMeter=yes
 #SpeedMeterIntervalSec=10sec
 #ManageForeignRoutingPolicyRules=yes
 #ManageForeignRoutes=yes
+#ManageForeignNextHops=yes
 #RouteTable=
 #IPv6PrivacyExtensions=no
+#UseDomains=no
+
+[IPv6AcceptRA]
+#UseDomains=
 
 [DHCPv4]
 #DUIDType=vendor
 #DUIDRawData=
+#UseDomains=
 
 [DHCPv6]
 #DUIDType=vendor
 #DUIDRawData=
+#UseDomains=
+
+[DHCPServer]
+#PersistLeases=yes
diff --git a/systemd/sleep.conf b/systemd/sleep.conf
index a444edf..f44fa2e 100644
--- a/systemd/sleep.conf
+++ b/systemd/sleep.conf
@@ -23,5 +23,6 @@ AllowHibernation=no
 #AllowHybridSleep=yes
 #SuspendState=mem standby freeze
 #HibernateMode=platform shutdown
+#MemorySleepMode=
 #HibernateDelaySec=
 #SuspendEstimationSec=60min
diff --git a/systemd/system.conf b/systemd/system.conf
index 74c37f6..bf6a9c1 100644
--- a/systemd/system.conf
+++ b/systemd/system.conf
@@ -26,7 +26,7 @@
 #ShowStatus=yes
 #CrashChangeVT=no
 #CrashShell=no
-CrashReboot=yes
+CrashReboot=reboot
 #CtrlAltDelBurstAction=reboot-force
 #CPUAffinity=
 #NUMAPolicy=default
@@ -39,6 +39,7 @@ CrashReboot=yes
 #WatchdogDevice=
 #CapabilityBoundingSet=
 #NoNewPrivileges=no
+#ProtectSystem=auto
 SystemCallArchitectures=native
 #TimerSlackNSec=
 #StatusUnitFormat=description