It has no corresponding wake(9).

Index: sys/net/if_wg.c
===================================================================
RCS file: /cvs/src/sys/net/if_wg.c,v
retrieving revision 1.35
diff -u -p -r1.35 if_wg.c
--- sys/net/if_wg.c	1 Jan 2024 18:47:02 -0000	1.35
+++ sys/net/if_wg.c	17 Jan 2024 07:19:22 -0000
@@ -518,7 +518,7 @@ wg_peer_destroy(struct wg_peer *peer)
 			continue;
 		}
 		NET_UNLOCK();
-		tsleep_nsec(sc, PWAIT, "wg_ifq", 1000);
+		tsleep_nsec(&nowake, PWAIT, "wg_ifq", 1000);
 		NET_LOCK();
 	}
 	NET_UNLOCK();