Index: share/man/man4/man4.i386/ce.4
===================================================================
--- share/man/man4/man4.i386/ce.4
+++ share/man/man4/man4.i386/ce.4
@@ -24,7 +24,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd January 30, 2006
+.Dd March 2, 2020
 .Dt CE 4 i386
 .Os
 .Sh NAME
@@ -49,6 +49,12 @@
 .Cd "device sppp"
 .Cd "options NETGRAPH"
 .Cd "options NETGRAPH_CRONYX"
+.Sh DEPRECATION NOTICE
+The
+.Nm
+driver is not present in
+.Fx 13.0
+and later.
 .Sh DESCRIPTION
 The
 .Nm
Index: share/man/man4/man4.i386/cp.4
===================================================================
--- share/man/man4/man4.i386/cp.4
+++ share/man/man4/man4.i386/cp.4
@@ -13,7 +13,7 @@
 .\" Cronyx Id: cp.4,v 1.1.2.5 2004/06/21 17:47:40 rik Exp $
 .\" $FreeBSD$
 .\"
-.Dd July 16, 2005
+.Dd March 2, 2020
 .Dt CP 4 i386
 .Os
 .Sh NAME
@@ -38,6 +38,12 @@
 .Cd "device sppp"
 .Cd "options NETGRAPH"
 .Cd "options NETGRAPH_CRONYX"
+.Sh DEPRECATION NOTICE
+The
+.Nm
+driver is not present in
+.Fx 13.0
+and later.
 .Sh DESCRIPTION
 The
 .Nm
Index: share/man/man4/man4.i386/ctau.4
===================================================================
--- share/man/man4/man4.i386/ctau.4
+++ share/man/man4/man4.i386/ctau.4
@@ -13,7 +13,7 @@
 .\" Cronyx Id: ct.4,v 1.1.2.6 2004/06/21 17:56:40 rik Exp $
 .\" $FreeBSD$
 .\"
-.Dd September 6, 2004
+.Dd March 2, 2020
 .Dt CTAU 4 i386
 .Os
 .Sh NAME
@@ -33,6 +33,12 @@
 .Cd hint.ctau.0.port="0x240"
 .Cd hint.ctau.0.irq="15"
 .Cd hint.ctau.0.drq="7"
+.Sh DEPRECATION NOTICE
+The
+.Nm
+driver is not present in
+.Fx 13.0
+and later.
 .Sh DESCRIPTION
 The
 .Nm
Index: share/man/man4/man4.i386/cx.4
===================================================================
--- share/man/man4/man4.i386/cx.4
+++ share/man/man4/man4.i386/cx.4
@@ -13,7 +13,7 @@
 .\" Cronyx Id: cx.4,v 1.1.2.6 2004/06/21 17:56:40 rik Exp $
 .\" $FreeBSD$
 .\"
-.Dd July 16, 2005
+.Dd March 2, 2020
 .Dt CX 4 i386
 .Os
 .Sh NAME
@@ -45,6 +45,12 @@
 .Cd hint.cx.0.port="0x240"
 .Cd hint.cx.0.irq="15"
 .Cd hint.cx.0.drq="7"
+.Sh DEPRECATION NOTICE
+The
+.Nm
+driver is not present in
+.Fx 13.0
+and later.
 .Sh DESCRIPTION
 The
 .Nm
Index: sys/dev/ce/if_ce.c
===================================================================
--- sys/dev/ce/if_ce.c
+++ sys/dev/ce/if_ce.c
@@ -743,6 +743,7 @@
 	CE_UNLOCK (bd);
 	splx (s);
 
+	gone_in_dev(dev, 13, "sync serial (T1/E1) drivers");
 	return 0;
 }
 
Index: sys/dev/cp/if_cp.c
===================================================================
--- sys/dev/cp/if_cp.c
+++ sys/dev/cp/if_cp.c
@@ -530,6 +530,7 @@
 	adapter[unit] = b;
 	CP_UNLOCK (bd);
 	splx (s);
+	gone_in_dev(dev, 13, "sync serial (T1/E1) drivers");
 	return 0;
 }
 
Index: sys/dev/ctau/if_ct.c
===================================================================
--- sys/dev/ctau/if_ct.c
+++ sys/dev/ctau/if_ct.c
@@ -748,6 +748,7 @@
 	}
 	splx (s);
 	
+	gone_in_dev(dev, 13, "sync serial (T1/E1) drivers");
 	return 0;
 }
 
Index: sys/dev/cx/if_cx.c
===================================================================
--- sys/dev/cx/if_cx.c
+++ sys/dev/cx/if_cx.c
@@ -871,6 +871,7 @@
 	}
 	splx (s);
 
+	gone_in_dev(dev, 13, "sync serial (T1/E1) drivers");
 	return 0;
 }