diff --git a/share/man/man4/tcp.4 b/share/man/man4/tcp.4
--- a/share/man/man4/tcp.4
+++ b/share/man/man4/tcp.4
@@ -31,7 +31,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd November 17, 2023
+.Dd November 29, 2023
 .Dt TCP 4
 .Os
 .Sh NAME
@@ -464,13 +464,6 @@
 Maximum amount of time, in milliseconds, before a delayed ACK is sent.
 .It Va delayed_ack
 Delay ACK to try and piggyback it onto a data packet or another ACK.
-.It Va do_lrd
-Enable Lost Retransmission Detection for SACK-enabled sessions, disabled by
-default.
-Under severe congestion, a retransmission can be lost which then leads to a
-mandatory Retransmission Timeout (RTO), followed by slow-start.
-LRD will try to resend the repeatedly lost packet, preventing the time-consuming
-RTO and performance reducing slow-start.
 .It Va do_prr
 Perform SACK loss recovery using the Proportional Rate Reduction (PRR) algorithm
 described in RFC6937.
@@ -901,6 +894,13 @@
 .It Va sack.globalmaxholes
 Maximum number of SACK holes per system, across all connections.
 Defaults to 65536.
+.It Va sack.lrd
+Enable Lost Retransmission Detection for SACK-enabled sessions, enabled by
+default.
+Under severe congestion, a retransmission can be lost which then leads to a
+mandatory Retransmission Timeout (RTO), followed by slow-start.
+LRD will try to resend the repeatedly lost packet, preventing the time-consuming
+RTO and performance reducing slow-start or purge of the SACK scoreboard.
 .It Va sack.maxholes
 Maximum number of SACK holes per connection.
 Defaults to 128.
diff --git a/sys/netinet/tcp_input.c b/sys/netinet/tcp_input.c
--- a/sys/netinet/tcp_input.c
+++ b/sys/netinet/tcp_input.c
@@ -162,11 +162,6 @@
     &VNET_NAME(tcp_do_prr), 1,
     "Enable Proportional Rate Reduction per RFC 6937");
 
-VNET_DEFINE(int, tcp_do_lrd) = 0;
-SYSCTL_INT(_net_inet_tcp, OID_AUTO, do_lrd, CTLFLAG_VNET | CTLFLAG_RW,
-    &VNET_NAME(tcp_do_lrd), 1,
-    "Perform Lost Retransmission Detection");
-
 VNET_DEFINE(int, tcp_do_newcwv) = 0;
 SYSCTL_INT(_net_inet_tcp, OID_AUTO, newcwv, CTLFLAG_VNET | CTLFLAG_RW,
     &VNET_NAME(tcp_do_newcwv), 0,
diff --git a/sys/netinet/tcp_sack.c b/sys/netinet/tcp_sack.c
--- a/sys/netinet/tcp_sack.c
+++ b/sys/netinet/tcp_sack.c
@@ -132,6 +132,11 @@
     &VNET_NAME(tcp_do_newsack), 0,
     "Use revised SACK loss recovery per RFC 6675");
 
+VNET_DEFINE(int, tcp_do_lrd) = 1;
+SYSCTL_INT(_net_inet_tcp_sack, OID_AUTO, lrd, CTLFLAG_VNET | CTLFLAG_RW,
+    &VNET_NAME(tcp_do_lrd), 1,
+    "Perform Lost Retransmission Detection");
+
 VNET_DEFINE(int, tcp_sack_maxholes) = 128;
 SYSCTL_INT(_net_inet_tcp_sack, OID_AUTO, maxholes, CTLFLAG_VNET | CTLFLAG_RW,
     &VNET_NAME(tcp_sack_maxholes), 0,