Index: if_aggr.c
===================================================================
RCS file: /cvs/src/sys/net/if_aggr.c,v
retrieving revision 1.39
diff -u -p -r1.39 if_aggr.c
--- if_aggr.c	5 Feb 2022 03:56:16 -0000	1.39
+++ if_aggr.c	16 Nov 2022 04:49:09 -0000
@@ -299,7 +299,10 @@ static const char *lacp_mux_event_names[
  * aggr interface
  */
 
-#define AGGR_MAX_PORTS		32
+#define AGGR_PORT_BITS		5
+#define AGGR_FLOWID_SHIFT	(16 - AGGR_PORT_BITS)
+
+#define AGGR_MAX_PORTS		(1 << AGGR_PORT_BITS)
 #define AGGR_MAX_SLOW_PKTS	(AGGR_MAX_PORTS * 3)
 
 struct aggr_multiaddr {
@@ -660,7 +663,7 @@ aggr_transmit(struct aggr_softc *sc, con
 #endif
 
 	if (ISSET(m->m_pkthdr.csum_flags, M_FLOWID))
-		flow = m->m_pkthdr.ph_flowid;
+		flow = m->m_pkthdr.ph_flowid >> AGGR_FLOWID_SHIFT;
 
 	ifp0 = map->m_ifp0s[flow % AGGR_MAX_PORTS];