Index: head/sys/netinet/tcp_stacks/bbr.c
===================================================================
--- head/sys/netinet/tcp_stacks/bbr.c
+++ head/sys/netinet/tcp_stacks/bbr.c
@@ -14418,6 +14418,7 @@
 bbr_set_sockopt(struct socket *so, struct sockopt *sopt,
 		struct inpcb *inp, struct tcpcb *tp, struct tcp_bbr *bbr)
 {
+	struct epoch_tracker et;
 	int32_t error = 0, optval;
 
 	switch (sopt->sopt_name) {
@@ -14710,7 +14711,9 @@
 			if (tp->t_flags & TF_DELACK) {
 				tp->t_flags &= ~TF_DELACK;
 				tp->t_flags |= TF_ACKNOW;
+				NET_EPOCH_ENTER(et);
 				bbr_output(tp);
+				NET_EPOCH_EXIT(et);
 			}
 		} else
 			error = EINVAL;