13230 i40e has duplicate traffic when used with bhyve/snoop running

@@ -226,10 +226,29 @@
                 ret = ECANCELED;
                 goto done;
         }
 
 
+#if 1
+        /*
+         * XXX KEBE SAYS try this from Linux...
+         *
+         * Their comment says:
+         *
+         * set defport ON for Main VSI instead of true promisc
+         * this way we will get all unicast/multicast and VLAN
+         * promisc behavior but will not get VF or VMDq traffic
+         * replicated on the Main VSI.
+         */
+
+        ret = on ? i40e_aq_set_default_vsi(hw, I40E_DEF_VSI_SEID(i40e), NULL) :
+            i40e_aq_clear_default_vsi(hw, I40E_DEF_VSI_SEID(i40e), NULL);
+        if (ret == I40E_SUCCESS)
+                i40e->i40e_promisc_on = on;
+        else
+                err = EIO;
+#else
         ret = i40e_aq_set_vsi_unicast_promiscuous(hw, I40E_DEF_VSI_SEID(i40e),
             on, NULL, B_FALSE);
         if (ret != I40E_SUCCESS) {
                 i40e_error(i40e, "failed to %s unicast promiscuity on "
                     "the default VSI: %d", on == B_TRUE ? "enable" : "disable",

@@ -269,10 +288,11 @@
                 err = EIO;
                 goto done;
         } else {
                 i40e->i40e_promisc_on = on;
         }
+#endif
 
 done:
         mutex_exit(&i40e->i40e_general_lock);
         return (err);
 }