diff --git a/share/man/man4/cc_cdg.4 b/share/man/man4/cc_cdg.4
index 38f8ed397def..1b14e094ff84 100644
--- a/share/man/man4/cc_cdg.4
+++ b/share/man/man4/cc_cdg.4
@@ -25,7 +25,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd July 2, 2013
+.Dd May 13, 2021
 .Dt CC_CDG 4
 .Os
 .Sh NAME
@@ -99,6 +99,7 @@ Default is 0.
 .Sh SEE ALSO
 .Xr cc_chd 4 ,
 .Xr cc_cubic 4 ,
+.Xr cc_dctcp 4 ,
 .Xr cc_hd 4 ,
 .Xr cc_htcp 4 ,
 .Xr cc_newreno 4 ,
diff --git a/share/man/man4/cc_chd.4 b/share/man/man4/cc_chd.4
index 963d89247fde..32b0444f89d7 100644
--- a/share/man/man4/cc_chd.4
+++ b/share/man/man4/cc_chd.4
@@ -29,7 +29,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd September 15, 2011
+.Dd May 13, 2021
 .Dt CC_CHD 4
 .Os
 .Sh NAME
@@ -86,7 +86,9 @@ is used.
 Default is 1.
 .El
 .Sh SEE ALSO
+.Xr cc_cdg 4 ,
 .Xr cc_cubic 4 ,
+.Xr cc_dctcp 4 ,
 .Xr cc_hd 4 ,
 .Xr cc_htcp 4 ,
 .Xr cc_newreno 4 ,
diff --git a/share/man/man4/cc_cubic.4 b/share/man/man4/cc_cubic.4
index 75df183fa16f..92ac8971e867 100644
--- a/share/man/man4/cc_cubic.4
+++ b/share/man/man4/cc_cubic.4
@@ -30,7 +30,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd September 15, 2011
+.Dd May 13, 2021
 .Dt CC_CUBIC 4
 .Os
 .Sh NAME
@@ -62,7 +62,9 @@ section below.
 .Sh MIB Variables
 There are currently no tunable MIB variables.
 .Sh SEE ALSO
+.Xr cc_cdg 4 ,
 .Xr cc_chd 4 ,
+.Xr cc_dctcp 4 ,
 .Xr cc_hd 4 ,
 .Xr cc_htcp 4 ,
 .Xr cc_newreno 4 ,
diff --git a/share/man/man4/cc_dctcp.4 b/share/man/man4/cc_dctcp.4
index 5c5be4fed96e..8c23f2eaa134 100644
--- a/share/man/man4/cc_dctcp.4
+++ b/share/man/man4/cc_dctcp.4
@@ -28,7 +28,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd July 29, 2019
+.Dd May 13, 2021
 .Dt CC_DCTCP 4
 .Os
 .Sh NAME
@@ -93,6 +93,7 @@ A flag if the congestion window should be reduced by one half after slow start.
 Valid settings 0 and 1, default 0.
 .El
 .Sh SEE ALSO
+.Xr cc_cdg 4 ,
 .Xr cc_chd 4 ,
 .Xr cc_cubic 4 ,
 .Xr cc_hd 4 ,
diff --git a/share/man/man4/cc_hd.4 b/share/man/man4/cc_hd.4
index 497e61616a0a..d56d9b77b4d9 100644
--- a/share/man/man4/cc_hd.4
+++ b/share/man/man4/cc_hd.4
@@ -29,7 +29,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd September 15, 2011
+.Dd May 13, 2021
 .Dt CC_HD 4
 .Os
 .Sh NAME
@@ -69,8 +69,10 @@ Minimum queuing delay threshold (qmin) in ticks.
 Default is 5.
 .El
 .Sh SEE ALSO
+.Xr cc_cdg 4 ,
 .Xr cc_chd 4 ,
 .Xr cc_cubic 4 ,
+.Xr cc_dctcp 4 ,
 .Xr cc_htcp 4 ,
 .Xr cc_newreno 4 ,
 .Xr cc_vegas 4 ,
diff --git a/share/man/man4/cc_htcp.4 b/share/man/man4/cc_htcp.4
index 0e141bb79a7d..46d94a12114a 100644
--- a/share/man/man4/cc_htcp.4
+++ b/share/man/man4/cc_htcp.4
@@ -30,7 +30,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd September 15, 2011
+.Dd May 13, 2021
 .Dt CC_HTCP 4
 .Os
 .Sh NAME
@@ -69,8 +69,10 @@ window increase during congestion avoidance mode invariant with respect to RTT.
 Default is 0 (disabled).
 .El
 .Sh SEE ALSO
+.Xr cc_cdg 4 ,
 .Xr cc_chd 4 ,
 .Xr cc_cubic 4 ,
+.Xr cc_dctcp 4 ,
 .Xr cc_hd 4 ,
 .Xr cc_newreno 4 ,
 .Xr cc_vegas 4 ,
diff --git a/share/man/man4/cc_newreno.4 b/share/man/man4/cc_newreno.4
index 8169c04c3eaa..0ac59beeec48 100644
--- a/share/man/man4/cc_newreno.4
+++ b/share/man/man4/cc_newreno.4
@@ -30,7 +30,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd August 6, 2019
+.Dd May 13, 2021
 .Dt CC_NEWRENO 4
 .Os
 .Sh NAME
@@ -96,8 +96,10 @@ per: cwnd = (cwnd * beta_ecn) / 100.
 Default is 80.
 .El
 .Sh SEE ALSO
+.Xr cc_cdg 4 ,
 .Xr cc_chd 4 ,
 .Xr cc_cubic 4 ,
+.Xr cc_dctcp 4 ,
 .Xr cc_hd 4 ,
 .Xr cc_htcp 4 ,
 .Xr cc_vegas 4 ,
diff --git a/share/man/man4/cc_vegas.4 b/share/man/man4/cc_vegas.4
index 45b4b6244017..ad043b218a4d 100644
--- a/share/man/man4/cc_vegas.4
+++ b/share/man/man4/cc_vegas.4
@@ -29,7 +29,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd September 15, 2011
+.Dd May 13, 2021
 .Dt CC_VEGAS 4
 .Os
 .Sh NAME
@@ -92,8 +92,10 @@ When setting beta, the value must satisfy: 0 < alpha < beta.
 Default is 3.
 .El
 .Sh SEE ALSO
+.Xr cc_cdg 4 ,
 .Xr cc_chd 4 ,
 .Xr cc_cubic 4 ,
+.Xr cc_dctcp 4 ,
 .Xr cc_hd 4 ,
 .Xr cc_htcp 4 ,
 .Xr cc_newreno 4 ,
diff --git a/share/man/man9/mod_cc.9 b/share/man/man9/mod_cc.9
index 7e9ab2488437..8be6fb2381bd 100644
--- a/share/man/man9/mod_cc.9
+++ b/share/man/man9/mod_cc.9
@@ -31,7 +31,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd January 21, 2016
+.Dd May 13, 2021
 .Dt MOD_CC 9
 .Os
 .Sh NAME
@@ -309,6 +309,7 @@ a large difference between the congestion window and send window.
 .Xr cc_cdg 4 ,
 .Xr cc_chd 4 ,
 .Xr cc_cubic 4 ,
+.Xr cc_dctcp 4 ,
 .Xr cc_hd 4 ,
 .Xr cc_htcp 4 ,
 .Xr cc_newreno 4 ,