Index: head/sys/dev/e1000/if_em.c
===================================================================
--- head/sys/dev/e1000/if_em.c
+++ head/sys/dev/e1000/if_em.c
@@ -3903,6 +3903,7 @@
 static void
 em_update_stats_counters(struct adapter *adapter)
 {
+	u64 prev_xoffrxc = adapter->stats.xoffrxc;
 
 	if(adapter->hw.phy.media_type == e1000_media_type_copper ||
 	   (E1000_READ_REG(&adapter->hw, E1000_STATUS) & E1000_STATUS_LU)) {
@@ -3926,7 +3927,8 @@
 	 ** For watchdog management we need to know if we have been
 	 ** paused during the last interval, so capture that here.
 	*/
-	adapter->shared->isc_pause_frames = adapter->stats.xoffrxc;
+	if (adapter->stats.xoffrxc != prev_xoffrxc)
+		adapter->shared->isc_pause_frames = 1;
 	adapter->stats.xofftxc += E1000_READ_REG(&adapter->hw, E1000_XOFFTXC);
 	adapter->stats.fcruc += E1000_READ_REG(&adapter->hw, E1000_FCRUC);
 	adapter->stats.prc64 += E1000_READ_REG(&adapter->hw, E1000_PRC64);