diff --git a/sys/dev/igc/if_igc.c b/sys/dev/igc/if_igc.c
--- a/sys/dev/igc/if_igc.c
+++ b/sys/dev/igc/if_igc.c
@@ -858,7 +858,7 @@
 	}
 
 	/* Don't lose promiscuous settings */
-	igc_if_set_promisc(ctx, IFF_PROMISC);
+	igc_if_set_promisc(ctx, if_getflags(ifp));
 	igc_clear_hw_cntrs_base_generic(&adapter->hw);
 
 	if (adapter->intr_type == IFLIB_INTR_MSIX) /* Set up queue routing */