diff --git a/homeassistant-supervised/DEBIAN/postinst b/homeassistant-supervised/DEBIAN/postinst
index 84bb964..e6332a7 100755
--- a/homeassistant-supervised/DEBIAN/postinst
+++ b/homeassistant-supervised/DEBIAN/postinst
@@ -14,7 +14,7 @@ SERVICE_DOCKER="docker.service"
 SERVICE_NM="NetworkManager.service"
 
 # Read infos from web
-URL_VERSION_HOST="version.home-assistant.io"
+URL_CHECK_ONLINE="checkonline.home-assistant.io"
 URL_VERSION="https://version.home-assistant.io/stable.json"
 HASSIO_VERSION=$(curl -s ${URL_VERSION} | jq -e -r '.supervisor')
 URL_APPARMOR_PROFILE="https://version.home-assistant.io/apparmor.txt"
@@ -36,8 +36,8 @@ info "Restarting docker service"
 systemctl restart "${SERVICE_DOCKER}"
 
 # Check network connection
-while ! ping -c 1 -W 1 ${URL_VERSION_HOST}; do
-    info "Waiting for ${URL_VERSION_HOST} - network interface might be down..."
+while ! ping -c 1 -W 1 ${URL_CHECK_ONLINE}; do
+    info "Waiting for ${URL_CHECK_ONLINE} - network interface might be down..."
     sleep 2
 done
 
diff --git a/homeassistant-supervised/etc/NetworkManager/NetworkManager.conf b/homeassistant-supervised/etc/NetworkManager/NetworkManager.conf
index 3510d54..bc5f0de 100644
--- a/homeassistant-supervised/etc/NetworkManager/NetworkManager.conf
+++ b/homeassistant-supervised/etc/NetworkManager/NetworkManager.conf
@@ -5,7 +5,17 @@ autoconnect-retries-default=0
 rc-manager=file
 
 [keyfile]
-unmanaged-devices=type:bridge;type:tun;type:veth
+unmanaged-devices=type:bridge;type:tun;driver:veth
 
 [logging]
 backend=journal
+
+[connection]
+connection.mdns=2
+connection.llmnr=2
+
+[connectivity]
+uri=http://checkonline.home-assistant.io/online.txt
+
+[device]
+wifi.scan-rand-mac-address=no
\ No newline at end of file
diff --git a/homeassistant-supervised/etc/NetworkManager/system-connections/default b/homeassistant-supervised/etc/NetworkManager/system-connections/default
deleted file mode 100644
index fe34425..0000000
--- a/homeassistant-supervised/etc/NetworkManager/system-connections/default
+++ /dev/null
@@ -1,13 +0,0 @@
-[connection]
-id=Supervisor default
-uuid=f35ac84e-420b-4003-a6d9-9700e8a32e54
-type=802-3-ethernet
-llmnr=2
-mdns=2
-
-[ipv4]
-method=auto
-
-[ipv6]
-addr-gen-mode=stable-privacy
-method=auto