diff --git a/systemd/pi-car-companion.service b/systemd/pi-car-companion.service
index af985b9..978883b 100644
--- a/systemd/pi-car-companion.service
+++ b/systemd/pi-car-companion.service
@@ -26,7 +26,7 @@ ProtectControlGroups=true
 RestrictRealtime=true
 LockPersonality=true
 SystemCallArchitectures=native
-RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6
+RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6 AF_NETLINK
 ReadWritePaths=/var/lib/pi-car-companion
 
 [Install]