diff --git a/lib/isc/netmgr/tcp.c b/lib/isc/netmgr/tcp.c
index ad74cb05cb..b8358f4cbc 100644
--- a/lib/isc/netmgr/tcp.c
+++ b/lib/isc/netmgr/tcp.c
@@ -1065,13 +1065,6 @@ isc__nm_tcp_send(isc_nmhandle_t *handle, const isc_region_t *region,
 	uvreq->cb.send = cb;
 	uvreq->cbarg = cbarg;
 
-	if (sock->write_timeout == 0) {
-		sock->write_timeout =
-			(atomic_load(&sock->keepalive)
-				 ? atomic_load(&sock->mgr->keepalive)
-				 : atomic_load(&sock->mgr->idle));
-	}
-
 	ievent = isc__nm_get_netievent_tcpsend(sock->mgr, sock, uvreq);
 	isc__nm_maybe_enqueue_ievent(&sock->mgr->workers[sock->tid],
 				     (isc__netievent_t *)ievent);
@@ -1116,6 +1109,13 @@ isc__nm_async_tcpsend(isc__networker_t *worker, isc__netievent_t *ev0) {
 	REQUIRE(sock->tid == isc_nm_tid());
 	UNUSED(worker);
 
+	if (sock->write_timeout == 0) {
+		sock->write_timeout =
+			(atomic_load(&sock->keepalive)
+				 ? atomic_load(&sock->mgr->keepalive)
+				 : atomic_load(&sock->mgr->idle));
+	}
+
 	result = tcp_send_direct(sock, uvreq);
 	if (result != ISC_R_SUCCESS) {
 		isc__nm_incstats(sock, STATID_SENDFAIL);
diff --git a/lib/isc/netmgr/tcpdns.c b/lib/isc/netmgr/tcpdns.c
index 18ce2d300f..779b42301a 100644
--- a/lib/isc/netmgr/tcpdns.c
+++ b/lib/isc/netmgr/tcpdns.c
@@ -1090,13 +1090,6 @@ isc__nm_tcpdns_send(isc_nmhandle_t *handle, isc_region_t *region,
 	uvreq->cb.send = cb;
 	uvreq->cbarg = cbarg;
 
-	if (sock->write_timeout == 0) {
-		sock->write_timeout =
-			(atomic_load(&sock->keepalive)
-				 ? atomic_load(&sock->mgr->keepalive)
-				 : atomic_load(&sock->mgr->idle));
-	}
-
 	ievent = isc__nm_get_netievent_tcpdnssend(sock->mgr, sock, uvreq);
 	isc__nm_maybe_enqueue_ievent(&sock->mgr->workers[sock->tid],
 				     (isc__netievent_t *)ievent);
@@ -1149,6 +1142,13 @@ isc__nm_async_tcpdnssend(isc__networker_t *worker, isc__netievent_t *ev0) {
 	sock = ievent->sock;
 	uvreq = ievent->req;
 
+	if (sock->write_timeout == 0) {
+		sock->write_timeout =
+			(atomic_load(&sock->keepalive)
+				 ? atomic_load(&sock->mgr->keepalive)
+				 : atomic_load(&sock->mgr->idle));
+	}
+
 	uv_buf_t bufs[2] = { { .base = uvreq->tcplen, .len = 2 },
 			     { .base = uvreq->uvbuf.base,
 			       .len = uvreq->uvbuf.len } };
diff --git a/lib/isc/netmgr/tlsdns.c b/lib/isc/netmgr/tlsdns.c
index d0f7922e89..1f9881c10c 100644
--- a/lib/isc/netmgr/tlsdns.c
+++ b/lib/isc/netmgr/tlsdns.c
@@ -1675,13 +1675,6 @@ isc__nm_tlsdns_send(isc_nmhandle_t *handle, isc_region_t *region,
 	uvreq->cb.send = cb;
 	uvreq->cbarg = cbarg;
 
-	if (sock->write_timeout == 0) {
-		sock->write_timeout =
-			(atomic_load(&sock->keepalive)
-				 ? atomic_load(&sock->mgr->keepalive)
-				 : atomic_load(&sock->mgr->idle));
-	}
-
 	ievent = isc__nm_get_netievent_tlsdnssend(sock->mgr, sock, uvreq);
 	isc__nm_enqueue_ievent(&sock->mgr->workers[sock->tid],
 			       (isc__netievent_t *)ievent);
@@ -1704,6 +1697,13 @@ isc__nm_async_tlsdnssend(isc__networker_t *worker, isc__netievent_t *ev0) {
 	REQUIRE(sock->type == isc_nm_tlsdnssocket);
 	REQUIRE(sock->tid == isc_nm_tid());
 
+	if (sock->write_timeout == 0) {
+		sock->write_timeout =
+			(atomic_load(&sock->keepalive)
+				 ? atomic_load(&sock->mgr->keepalive)
+				 : atomic_load(&sock->mgr->idle));
+	}
+
 	result = tlsdns_send_direct(sock, uvreq);
 	if (result != ISC_R_SUCCESS) {
 		isc__nm_incstats(sock, STATID_SENDFAIL);