diff --git a/share/man/man4/pf.4 b/share/man/man4/pf.4
--- a/share/man/man4/pf.4
+++ b/share/man/man4/pf.4
@@ -35,6 +35,17 @@
 .Sh SYNOPSIS
 .Cd "device pf"
 .Cd "options PF_DEFAULT_TO_DROP"
+.Pp
+In
+.Xr loader.conf 5 :
+.Cd net.pf.states_hashsize
+.Cd net.pf.source_nodes_hashsize
+.Cd net.pf.rule_tag_hashsize
+.Cd net.pf.udpendpoint_hashsize
+.Cd net.pf.default_to_drop
+.Cd net.pf.filter_local
+.Cd net.pf.request_maxcount
+.Cd net.pf.rdr_srcport_rewrite_tries
 .Sh DESCRIPTION
 Packet filtering takes place in the kernel.
 A pseudo-device,
diff --git a/share/man/man4/pfsync.4 b/share/man/man4/pfsync.4
--- a/share/man/man4/pfsync.4
+++ b/share/man/man4/pfsync.4
@@ -32,6 +32,11 @@
 .Nd packet filter state table synchronisation interface
 .Sh SYNOPSIS
 .Cd "device pfsync"
+.Pp
+In
+.Xr sysctl.conf 5 :
+.Cd net.pfsync.carp_demotion_factor
+.Cd net.pfsync.pfsync_buckets
 .Sh DESCRIPTION
 The
 .Nm