diff --git a/etc/NetworkManager/NetworkManager.conf b/etc/NetworkManager/NetworkManager.conf
index 5de03f25..d3317c11 100644
--- a/etc/NetworkManager/NetworkManager.conf
+++ b/etc/NetworkManager/NetworkManager.conf
@@ -1,15 +1,24 @@
+## I am using this file supporting memory, I don't copy-paste this
+## directly to anywhere.
+
 [main]
 # Ubuntu defaults
 plugins=ifupdown,keyfile,ofono
-# Use dnssec-triggerd
+# Use dnssec-triggerd (or dnsmasq at home)
 dns=unbound
 
+[keyfile]
+# Disable misbehaving NIC
+unmanaged-devices=mac:xx:xx:xx:xx:xx:xx
+#hostname=HOSTNAME_TO_SEND_TO_DHCPD
+
 [ifupdown]
 # more Ubuntu defaults
 managed=false
 
 ## HTTP-based connectivity check
 [connectivity]
+# On Arch I seem to be using the default instead.
 uri=http://koti.kapsi.fi/~mikaela/check_network_status.txt
 interval=300
 
diff --git a/etc/NetworkManager/NetworkManager.conf.arch b/etc/NetworkManager/NetworkManager.conf.arch
new file mode 100644
index 00000000..8f60e100
--- /dev/null
+++ b/etc/NetworkManager/NetworkManager.conf.arch
@@ -0,0 +1,12 @@
+[main]
+plugins=keyfile
+dns=dnsmasq
+
+## HTTP-based connectivity check
+[connectivity]
+uri=http://nmcheck.gnome.org/check_network_status.txt
+interval=100
+
+[keyfile]
+#unmanaged-devices=mac:xx:xx:xx:xx:xx:xx
+#hostname=HOSTNAME_FOR_DHCPD