diff --git a/plinth/modules/janus/data/usr/lib/systemd/system/janus.service.d/freedombox.conf b/plinth/modules/janus/data/usr/lib/systemd/system/janus.service.d/freedombox.conf
index ff39fdff1..477167d7d 100644
--- a/plinth/modules/janus/data/usr/lib/systemd/system/janus.service.d/freedombox.conf
+++ b/plinth/modules/janus/data/usr/lib/systemd/system/janus.service.d/freedombox.conf
@@ -14,7 +14,7 @@ ProtectKernelLogs=yes
 ProtectKernelModules=yes
 ProtectKernelTunables=yes
 ProtectSystem=strict
-RestrictAddressFamilies=AF_INET AF_INET6
+RestrictAddressFamilies=AF_UNIX AF_INET AF_INET6 AF_NETLINK
 RestrictNamespaces=yes
 RestrictRealtime=yes
 RestrictSUIDSGID=yes