diff --git a/share/man/man4/ng_ccatm.4 b/share/man/man4/ng_ccatm.4
--- a/share/man/man4/ng_ccatm.4
+++ b/share/man/man4/ng_ccatm.4
@@ -31,7 +31,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd March 10, 2005
+.Dd March 3, 2023
 .Dt NG_CCATM 4
 .Os
 .Sh NAME
@@ -47,6 +47,11 @@
 .In netgraph.h
 .In netgraph/ng_uni.h
 .In netgraph/ng_ccatm.h
+.Sh DEPRECATION NOTICE
+.Nm
+is deprecated and may not be available in
+.Fx 14.0
+and later.
 .Sh DESCRIPTION
 The
 .Nm
diff --git a/share/man/man4/ng_sscfu.4 b/share/man/man4/ng_sscfu.4
--- a/share/man/man4/ng_sscfu.4
+++ b/share/man/man4/ng_sscfu.4
@@ -30,7 +30,7 @@
 .\"
 .\" ng_sscfu(4) man page
 .\"
-.Dd October 24, 2003
+.Dd March 3, 2023
 .Dt NG_SSCFU 4
 .Os
 .Sh NAME
@@ -40,6 +40,11 @@
 .In netnatm/saal/sscopdef.h
 .In netnatm/saal/sscfudef.h
 .In netgraph/atm/ng_sscfu.h
+.Sh DEPRECATION NOTICE
+.Nm
+is deprecated and may not be available in
+.Fx 14.0
+and later.
 .Sh DESCRIPTION
 The
 .Nm sscfu
diff --git a/share/man/man4/ng_sscop.4 b/share/man/man4/ng_sscop.4
--- a/share/man/man4/ng_sscop.4
+++ b/share/man/man4/ng_sscop.4
@@ -30,7 +30,7 @@
 .\"
 .\" ng_sscop(4) man page
 .\"
-.Dd October 24, 2003
+.Dd March 3, 2023
 .Dt NG_SSCOP 4
 .Os
 .Sh NAME
@@ -39,6 +39,11 @@
 .Sh SYNOPSIS
 .In netnatm/saal/sscopdef.h
 .In netgraph/atm/ng_sscop.h
+.Sh DEPRECATION NOTICE
+.Nm
+is deprecated and may not be available in
+.Fx 14.0
+and later.
 .Sh DESCRIPTION
 The
 .Nm sscop
diff --git a/share/man/man4/ng_uni.4 b/share/man/man4/ng_uni.4
--- a/share/man/man4/ng_uni.4
+++ b/share/man/man4/ng_uni.4
@@ -28,7 +28,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd October 6, 2003
+.Dd March 3, 2023
 .Dt NG_UNI 4
 .Os
 .Sh NAME
@@ -38,6 +38,11 @@
 .In netnatm/msg/unistruct.h
 .In netnatm/sig/unidef.h
 .In netgraph/atm/ng_uni.h
+.Sh DEPRECATION NOTICE
+.Nm
+is deprecated and may not be available in
+.Fx 14.0
+and later.
 .Sh DESCRIPTION
 The
 .Nm uni
diff --git a/share/man/man4/ngatmbase.4 b/share/man/man4/ngatmbase.4
--- a/share/man/man4/ngatmbase.4
+++ b/share/man/man4/ngatmbase.4
@@ -30,9 +30,14 @@
 .\"
 .\" ngatmbase(4) man page
 .\"
-.Dd August 24, 2004
+.Dd March 3, 2023
 .Dt NGATMBASE 4
 .Os
+.Sh DEPRECATION NOTICE
+.Nm
+is deprecated and may not be available in
+.Fx 14.0
+and later.
 .Sh NAME
 .Nm ngatmbase
 .Nd netgraph ATM utility module
diff --git a/sys/netgraph/atm/ccatm/ng_ccatm.c b/sys/netgraph/atm/ccatm/ng_ccatm.c
--- a/sys/netgraph/atm/ccatm/ng_ccatm.c
+++ b/sys/netgraph/atm/ccatm/ng_ccatm.c
@@ -348,6 +348,8 @@
 {
 	struct ccnode *priv;
 
+	gone_in(14, "ng_ccatm: netgraph ATM modules");
+
 	priv = malloc(sizeof(*priv), M_NG_CCATM, M_WAITOK | M_ZERO);
 
 	priv->node = node;
diff --git a/sys/netgraph/atm/ngatmbase.c b/sys/netgraph/atm/ngatmbase.c
--- a/sys/netgraph/atm/ngatmbase.c
+++ b/sys/netgraph/atm/ngatmbase.c
@@ -77,6 +77,8 @@
 static void
 uni_msg_init(void)
 {
+	gone_in(14, "ngatmbase: netgraph ATM modules");
+
 	mtx_init(&ngatm_unilist_mtx, "netgraph UNI msg header lists", NULL,
 	    MTX_DEF);
 }
diff --git a/sys/netgraph/atm/sscfu/ng_sscfu.c b/sys/netgraph/atm/sscfu/ng_sscfu.c
--- a/sys/netgraph/atm/sscfu/ng_sscfu.c
+++ b/sys/netgraph/atm/sscfu/ng_sscfu.c
@@ -536,6 +536,8 @@
 {
 	struct priv *priv;
 
+	gone_in(14, "ng_sscfu: netgraph ATM modules");
+
 	priv = malloc(sizeof(*priv), M_NG_SSCFU, M_WAITOK | M_ZERO);
 
 	if ((priv->sscf = sscfu_create(node, &sscfu_funcs)) == NULL) {
diff --git a/sys/netgraph/atm/sscop/ng_sscop.c b/sys/netgraph/atm/sscop/ng_sscop.c
--- a/sys/netgraph/atm/sscop/ng_sscop.c
+++ b/sys/netgraph/atm/sscop/ng_sscop.c
@@ -246,6 +246,8 @@
 {
 	struct priv *p;
 
+	gone_in(14, "ng_sscop: netgraph ATM modules");
+
 	p = malloc(sizeof(*p), M_NG_SSCOP, M_WAITOK | M_ZERO);
 
 	if ((p->sscop = sscop_create(node, &sscop_funcs)) == NULL) {
diff --git a/sys/netgraph/atm/uni/ng_uni.c b/sys/netgraph/atm/uni/ng_uni.c
--- a/sys/netgraph/atm/uni/ng_uni.c
+++ b/sys/netgraph/atm/uni/ng_uni.c
@@ -225,6 +225,8 @@
 {
 	struct priv *priv;
 
+	gone_in(14, "ng_uni: netgraph ATM modules");
+
 	priv = malloc(sizeof(*priv), M_NG_UNI, M_WAITOK | M_ZERO);
 
 	if ((priv->uni = uni_create(node, &uni_funcs)) == NULL) {